Answer:
3) The commercial costs $900 to produce and $110 each times it is aired.
Step-by-step explanation:
We can determine how expensive it is to produce a commercial by looking at the function C(n)'s output when n = 0 (when the commercial hasn't been aired yet).
C(0) = 110(0) + 900
C(0) = $900
So, the cost of producing a commercial is $900.
We can see that $110 is added to the cost each time n is incremented by 1. Therefore, it costs $110 each time the commercial is aired.
We can put these two statements together to deduce that answer option 3 is correct:
The commercial costs $900 to produce and $110 each times it is aired.
Answer:
Option 3
Step-by-step explanation:
900 is a constant number that never changes. However, the value of "110n" changes every time it is aired, because 110 is multiplied by a different number. This means that $110 represents the cost of airing it each time, because if it was hypothetically aired three times, you would multiply 110 by 3, proving that it is the cost to air it, and $900 is the production cost. It also makes no sense to produce the same commercial over and over again, so the cost that is multiplied has to be the amount of times that it is aired.
Find each value or measure.
The answers are explained in the solution below.
What is circle?A circle is a round-shaped figure that has no corners or edges. In geometry, a circle can be defined as a closed, two-dimensional curved shape.
Given are some circles, we need to find the value of x, in each,
Using the properties of the circle, If two chords in a circle are congruent, then their intercepted arcs are congruent, [the main theorem]
1) RS = 59 and ST = 10x-31,
10x-31 = 59
10x = 100
x = 10
2) arc JK = arc ML
Therefore,
7x-39 = 87
7x = 126
x = 18
3) arc AB = arc DC
Therefore,
2(13x-21) = 360°-(arc AD+arc BC)
2(13x-21) = 244
13x-21 = 122
13x = 143
x = 11
4) LM = NP
Therefore,
41-2x = 7x+5
36 = 9x
x = 4
LM = 41-2(4)
= 41-8 = 33
5) arc UV = arc VW
Therefore,
8x-17 = 5x+52
3x = 69
x = 23
arc WV = 5(23)+52 = 167
6) We know, that the distance of two equal chords are same from the center of a circle,
Therefore,
HJ = JI
3x+20 = 15x-64
84 = 12x
x = 7
JI = 105-64
JI = 41
7) Using the converse of the theorem used in question 6, we have,
Chord BC = Chord CD
Again using the main theorem of the question,
arc BC = arc CD
9x-53 = 2x+45
7x = 98
x = 14
arc BAD = 360°-(arc BC + arc CD)
arc BAD = 214°
8) arc LM = arc NP
8x-56 = 5x+22
3x = 78
x = 26
Therefore, arc LM = arc NP = 152°
m arc LP = 360°-(arc LM + arc NP + arc MN)
m arc LP = 17°
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Look at the following table then answer the questions below
a. Which of the functions in the table appears to be exponential?
b. What reasoning would you use to justify your answer?
c. Which function(s) would most likely model bacterial growth in a lab culture? Justify your reasoning.
d. Which values would most likely model a tub collecting water from a leaky faucet? Justify your reasoning.
The evaluation of the functions for data in the table and the graphs of the data, created using MS Excel, indicates that we get;
a. Equation 3 appears to be exponential
b. The reason is that as the value of x increases, the output values of the equation increases exponentially
c. The population of a bacteria is most likely modeled by Equation 3, which is an exponential function, because as the number of bacterium increases, the number of offspring they can produce in the next period increases, resulting in an exponential growth
d. Equation 4, which can be modeled using a linear equation, with a positive slope most likely models a tub collecting water from a leak faucet.
How can a function model an observed occurrence?A function can be used to model an observation by specifying the relationship between the input and output values of the observation.
a. The function in the table that appears to be exponential is Equation 3
b. An exponential function is a function that has an equation of the following forms;
f(x) = [tex]a\cdot b^{c\cdot x}[/tex]
f(x) = [tex]p\cdot e^{k\cdot x}[/tex]
The values in the table for Equation 3 indicates that the as the value of x increases, the values of f(x) increases several times more, which is an exponential increase, such that an equation that can model the data, obtained using MS Excel is; f(x) = 0.1982 × e^(0.3092·x)
Plugging in the values of x, we get;
The value of f(x) at x = 9 is; f(9) = 0.1982 × e^(0.3092 × 9) ≈ 3.2
The value of f(x) at x = 10 is; f(10) = 0.1982 × e^(0.3092 × 10) ≈ 4.36
The value of f(x) at x = 17 is; f(17) = 0.1982 × e^(0.3092 × 17) ≈ 38.0
Therefore, the function for Equation 3 appears to be exponential
Please find attached the graph for the Equation 3 data values, created with MS Excel
c. The growth of a population is best modelled by an exponential function, therefore, the function that most likely models a bacteria growth in a lab culture is Equation 3.
d. The tub collecting water from a leaking faucet collects water at the steady rate at which the faucets leaks, which can be modelled by a linear equation with a positive slope, because the amount of water in the tub increases steadily.
The graph and trendline obtained from values of the data for Equation 4, indicates that the line of best fit is a line with the equation;
y = 0.0626·x + 2.0016The square of the regression coefficient is; R² = 0.9993
The slope of the line of best fit of Equation 4 is positive, and therefore increasing at a steady rate and can therefore model collecting water from a leaky faucet using a tub
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\[ \left(\frac{3 \sqrt[3]{x y} y^{-3}}{\sqrt[3]{y} x^{-\frac{4}{3}}}\right)^{-1} \] (d) \( (\sqrt{y}+2)(\sqrt{y}-2) \)
The correct option is (c) $768x^{\frac{1}{3}}$
The given expression is as follows; \[ \left(\frac{3 \sqrt[3]{x y} y^{-3}}{\sqrt[3]{y} x^{-\frac{4}{3}}}\right)^{-1} \]Firstly, simplify the numerator and the denominator of the expression.\[\frac{3\sqrt[3]{xy}y^{-3}}{\sqrt[3]{y}x^{-\frac{4}{3}}}=\frac{3}{\sqrt[3]{x}x^{-\frac{4}{3}}\sqrt[3]{y}y^{-3}}\]Next, simplify the denominator of the expression.\[\frac{3}{\sqrt[3]{x}x^{-\frac{4}{3}}\sqrt[3]{y}y^{-3}}=3x^{\frac{1}{3}}y^{\frac{10}{3}}\]Now, let us substitute $y=16$ into the expression of $3x^{\frac{1}{3}}y^{\frac{10}{3}}$.\[3x^{\frac{1}{3}}y^{\frac{10}{3}}=3x^{\frac{1}{3}}(16)^{\frac{10}{3}}=48x^{\frac{1}{3}}(2)^{\frac{10}{3}}=768x^{\frac{1}{3}}\]As we obtained the value of the expression by substituting $y=16$, therefore the correct option is (c) $768x^{\frac{1}{3}}$.
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A hot air balloon is 520m from the ground. A building is 450m tall. If the angle of elevation from the top of the building to the hot air balloon is 10, find the horizontal distance from the balloon to the building in meters
Answer: The horizontal distance from the hot air balloon to the building is approximately 2533.39 meters.
Step-by-step explanation:
We can use trigonometry to solve this problem. Let's draw a diagram to visualize the situation!!
=== begin diagram ===
B (balloon)
/|
/ |
/ | 520m
/ |
/θ |
/ |
/______|___ C (ground)
A D
=== end diagram ===
In the diagram, we have a hot air balloon at point B that is 520m from the ground at point C. We also have a building at point D that is 450m tall. The angle of elevation from point D to point B is 10 degrees (angle θ).
We want to find the horizontal distance between point B and point D (distance AB in the diagram).
To do this, we can use the tangent function:
tan(θ) = opposite/adjacent
In this case, the opposite side is the height of the building (450m) and the adjacent side is the horizontal distance we want to find (AB). We can rearrange the formula to solve for AB:
AB = opposite/tan(θ)
AB = 450m / tan(10°)
AB ≈ 2533.39m
Therefore, the horizontal distance from the hot air balloon to the building is approximately 2533.39 meters.
Help me solve this homework please
Hence Proved that the sum of two consecutive exponents of the number 5 is divisible by 30. and if two consecutive exponents are 5^n and 5^n+1, then their sum can be written as 5^n-1*30.
What is exponents?Exponentiation is a mathematical operation, written as aⁿ. An exponent refers to the number of times a number is multiplied by itself. For example, 2 to the 3rd (written like this: 23) means: 2 x 2 x 2 = 8. 23 is not the same as 2 x 3 = 6. Remember that a number raised to the power of 1 is itself.
here, we have,
Let suppose two consecutive exponents of 5 are :
5^n and 5^n+1,
Sum of these exponents is
5^n + 5^n+1
So we writes this expression as
5^n + 5^n*5
=5^n(1 + 5)
=5^n * 6
=5^n-1 * 30
So it will be divisible by 30 .
Hence Proved that the sum of two consecutive exponents of the number 5 is divisible by 30. and if two consecutive exponents are 5^n and 5^n+1, then their sum can be written as 5^n-1*30.
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x=y-6 pls help me quick
Answer:
Solve for x: x = x +
solve for y: y = x + 6
Coordinate: (0,6)
I didnnt know which answer you wanted cuz you didn't specify
Compute the discriminant. Then determine the number and type of solutions of the given solution.
2x2−7x+4=0
What is the discriminant?
Choose the sentence that describes the number and type of solutions of the quadratic equation.
(a) There are two unequal real solutions.
(b) There are two imaginary solutions.
(c) There is one real solution.
(d) There are infinite numbers of real solutions.
The correct option that describes the number and type of solutions of the quadratic equation is: There are two unequal real solutions. The correct answer alternative is option a.
The discriminant of a quadratic equation is the part of the equation under the square root in the quadratic formula, which is b² - 4ac. In the given equation, 2x² - 7x + 4 = 0, the values of a, b, and c are 2, -7, and 4, respectively.
To compute the discriminant, we plug in these values into the formula:
Discriminant = b² - 4ac
= (-7)² - 4(2)(4)
= 49 - 32
= 17
The discriminant is 17.
To determine the number and type of solutions of the quadratic equation, we look at the value of the discriminant. If the discriminant is greater than 0, there are two unequal real solutions. If the discriminant is equal to 0, there is one real solution. If the discriminant is less than 0, there are two imaginary solutions.
Since the discriminant in this case is 17, which is greater than 0, there are two unequal real solutions. Therefore, the correct answer is (a) There are two unequal real solutions.
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1. Use the Wronskian to determine whether the following sets of functions are linealy inde- pendent (a) {cos(x), 3 cos(x) + sin(2x), sin(x)} (b) {e", ce", cº}
Yes, we can use the Wronskian to determine whether the following sets of functions are linearly independent. Let's take a look at each set:
Set (a): {cos(x), 3 cos(x) + sin(2x), sin(x)}
To determine if this set of functions is linearly independent, we calculate the Wronskian of the functions. The Wronskian of this set of functions is:
W(cos(x), 3 cos(x) + sin(2x), sin(x)) = -2 cos(2x) - 3 sin(x)
Since the Wronskian is not equal to zero, this set of functions is linearly independent.
Set (b): {e', ce', cº}
To determine if this set of functions is linearly independent, we calculate the Wronskian of the functions. The Wronskian of this set of functions is:
W(e', ce', cº) = e
Since the Wronskian is not equal to zero, this set of functions is also linearly independent.
In conclusion, both sets of functions are linearly independent.
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number pattern
please help!!!
Answer:
it appears to be going up by adding odd numbers
Step-by-step explanation:
2+3=5+5=10+7=17+9=26 ect....
Given f (x)=7x-9, (a) Find f (x+h) and simplify. f(x+h)-f(x) (b) Find and simplify. h Part: 0/2 Part 1 of 2 (a) f(x+h)=
From equation f (x)=7x-9, f (x+h)= 7h and we can simplify it as 7.
For part (a), we can start by substituting x+h for x in the equation for f(x):
f(x+h) = 7(x+h) - 9
f(x+h) = 7x + 7h - 9
We can then simplify the expression to:
f(x+h) = 7x + 7h - 9
Now, to find f(x+h) - f(x), we can subtract f(x) from both sides of the equation:
f(x+h) - f(x) = 7x + 7h - 9 - (7x - 9)
f(x+h) - f(x) = 7h
Therefore, for part (a) we can conclude that f(x+h) - f(x) = 7h.
Now, we can simplify the difference quotient using f(x+h) and f(x):
f(x+h) - f(x) = [7(x+h) - 9] - [7x - 9]
= 7h
f(x+h) - f(x) / h = 7h / h = 7
We have already simplified the difference quotient to 7.
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QUESTION 19 Without solving, determine the character of the solutions of the equation in the complex number system. x^(2)+3x+6=0
The equation x^(2)+3x+6=0 has two solutions in the complex number system.
To determine the character of these solutions, we can use the Discriminant. The discriminant is found by evaluating the expression b^(2)-4ac, where b and c are the coefficients of the equation and a is the coefficient of x^(2). In this case, a=1, b=3 and c=6, so the discriminant is 3^(2)-4*1*6 = -15. Since the discriminant is negative, the two solutions are complex and imaginary.
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I need this asapppppppp
The measure of the smaller angle is 45°.
How to find the measure of the smallest angle?An heptagon is a figure with 7 sides, and the sum of the interior angles is equal to 900°.
Then here we can write a linear equation that depens on x, where we add all the given angles and we know that it must be equal to 900.
2x + 3x + 4x + 5x + 7x + 9x + 10x = 900
Solving that linaer equation for x:
(2 + 3 + 4 +5 + 7 + 9 + 10)*x = 900
40x = 900
x = 900/40 = 22.5
The measure of the smaller angle is:
(2x)°
replacing the value of x that we just got we will get:
2*22.5° = 45°
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3. In montht=0, a small group of rabbits escapes from a ship onto an island where there are no rabbits. The island rabbit population,P(t), in monthtis given byP(t)=1+24(0.85)′1000a) How many rabbits escaped from the ship? Explain how you arrived at your answer. b) EvaluateP(6)andP(24)and explain their meaning in the context of the problem. Use complete sentences. c) Use your calculator to graphP(t)for0≤t≤80. Obtain a printout of this graph, label each axis with both a variable and a word label, and label the scale on each axis. d) Describe the shape of the graph in mathematical words (increasing, decreasing, local maximum, local minimum). e) Use the graph to describe the manner in which the rabbit population has changed since the rabbits escaped. f) Does the graph suggest the growth in population you would expect among rabbits on an island. Explain g) Use the graph to estimate how long it will take before there are 500 rabbits. Show this on the graph vou drew. Write the conclusion in sentence.
a) The number of rabbits that escaped from the ship is 24.
b) P(6) = 1 + 24 (0.85)^6 = 91.7, and P(24) = 1 + 24 (0.85)^24 = 436.8.
c) The graph of P(t) for 0 ≤ t ≤ 80 is an exponential curve that increases steadily over time.
d) The graph of P(t) is increasing.
e) The graph shows that the population of rabbits has increased exponentially since they escaped from the ship.
f) Yes, the graph does suggest the growth in population that would be expected among rabbits on an island. This is due to the steadily increasing nature of the graph.
g) The graph suggests that it will take approximately 65 months for the rabbit population to reach 500. This can be seen on the graph, as the y-axis value reaches 500 around the 65th month.
a)This can be calculated by taking the initial population, 1, and multiplying it by the given rate of growth, 0.85, and raising that to the 1000th power.
b) The meaning of these numbers in the context of the problem is that P(6) represents the total rabbit population after 6 months, and P(24) represents the total rabbit population after 24 months.
c)It is labeled with the variable t on the x-axis and the word "Population" on the y-axis, with each axis scaled appropriately.
f) Yes, the graph does suggest the growth in population that would be expected among rabbits on an island. This is due to the steadily increasing nature of the graph.
g)The graph suggests that it will take 65 months for the rabbit population to reach 500. This can be seen on the graph, as the y-axis value reaches 500 around the 65th month.
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The usual price of a bag is $61.00. If the bag is on a 50% offer, how much will it cost?
Answer: $30.50
Step-by-step explanation:
To find a discount, the formula is, List price - (List price x (percentage / 100))
A regular octagon is shown below. Suppose that the octagon is rotated clockwise about its center so that the vertex at T is moved to V. How many degrees does
the octagon rotate?
The octagon has rotated 45° when the vertex at T is moved to V. This is because the angle of rotation for a regular octagon is 45° when the vertex at T is moved to V.
What is an octagon?An octagon is a two-dimensional shape with eight sides and eight angles. It is a polygon which means it is a closed, two-dimensional shape with straight sides. Octagons are used in architecture and design and are commonly seen in stop signs and floor tiles. The angles of an octagon are all equal and each side is the same length.
The regular octagon has eight equal sides and angles. The angles of an octagon are all of the same size, which is 135°. If the octagon is rotated clockwise about its center, then the vertex at T is moved to V. This means that the octagon will have rotated 45° in order to move T to V.
To calculate the angle of rotation, we can use the formula: angle of rotation = (360°/number of sides). Therefore, the angle of rotation for this octagon will be (360°/8) = 45°.
To confirm this, we can use a protractor to measure the angle between the two lines. The angle between the two lines is 45°. This confirms that the octagon has rotated by 45° as the vertex at T has been moved to V.
Therefore, the octagon has rotated 45° when the vertex at T is moved to V. This is because the angle of rotation for a regular octagon is 45° when the vertex at T is moved to V. This can be confirmed by using a protractor to measure the angle between the two lines.
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Define a scheme procedure that takes a set (a list of distinct elements) and generates a list of all subsets of the set. For example, (subsets '(a b c )) returns ((a b c) (b c) (a c) (c) (a b) (b) (a) ()). Then, manually trace your procedure with the provided example. Please study provided examples in the lecture notes to learn how you should manually trace our procedure
Scheme procedure to generate a list of all subsets of a set:
(define (subsets set)
(if (null? set)
'(())
(let ((rest (subsets (cdr set))))
(append rest (map (lambda (x) (cons (car set) x)) rest))))))
The subsets procedure takes a set as input and checks if the set is empty. If the set is empty, it returns a list with an empty set as its only element. Otherwise, it calls the subsets procedure recursively on the rest of the set (without the first element) and stores the result in a variable called rest.
It then appends the rest list to the result of mapping a lambda function over the rest list. The lambda function takes an element x from the rest list and conses the first element of the original set to it to create a new subset. This results in a list of all subsets of the original set.
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Question 10 Determine the size (n) of the given arithmetic series. 38+48+58+68dots, S_(n)=968
The size (n) of the given arithmetic series is 4.
To determine the size (n) of the given arithmetic series, we need to use the formula for the sum of an arithmetic series, which is S_n = (n/2)(a_1 + a_n), where S_n is the sum of the series, n is the number of terms, a_1 is the first term, and a_n is the last term.
In this case, we are given that S_n = 968, a_1 = 38, and the common difference is 10 (since each term is 10 more than the previous one). We need to find the value of n.
Rearranging the formula to solve for n, we get:
n = (2S_n)/(a_1 + a_n)
Substituting in the given values, we get:
n = (2(968))/(38 + a_n)
Since we don't know the value of a_n, we can use the formula for the nth term of an arithmetic series, which is a_n = a_1 + (n-1)d, where d is the common difference. Substituting in the given values, we get:
a_n = 38 + (n-1)(10)
Simplifying, we get:
a_n = 10n + 28
Now we can substitute this value of a_n back into the equation for n:
n = (2(968))/(38 + 10n + 28)
Simplifying, we get:
n = (1936)/(66 + 10n)
Multiplying both sides by (66 + 10n), we get:
n(66 + 10n) = 1936
Expanding, we get:
10n^2 + 66n - 1936 = 0
Using the quadratic formula, we get:
n = (-66 ± √(66^2 - 4(10)(-1936)))/(2(10))
Simplifying, we get:
n = (-66 ± √(19396))/(20)
n = (-66 ± 139.27)/(20)
n = 3.66 or n = -10.26
Since n must be a positive integer, the only valid solution is n = 4.
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Triangle ABC is enlarged with a scale factor of -2 and the origin of the centre to give triangle ABC . WORK OUT THE COORDINATES OF A and B
The coordinates of the triangle A'B'C' are A'(-2, -6), B'(-14, -2) and C'(-2, -2).
What is a dilation?Dilation is the process of resizing or transforming an object. It is a transformation that makes the objects smaller or larger with the help of the given scale factor. The new figure obtained after dilation is called the image and the original image is called the pre-image.
From the given graph, triangle ABC have A(1, 3), B(7, 1) and (1, 1).
Triangle ABC is enlarged with a scale factor of -2 and the origin of the Centre to give triangle A'B'C'.
Now, A(1, 3) → -2(1, 3)→A'(-2, -6)
B(7, 1) → -2(7, 1) → B'(-14, -2)
C(1, 1) → -2(1, 1) → C'(-2, -2)
Therefore, the coordinates of the triangle A'B'C' are A'(-2, -6), B'(-14, -2) and C'(-2, -2).
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The angle of elevation of the sun is 41°. The shadow of a building is 32 feet long. How tall is the building? Round your answer to the nearest hundredth.
This is an EMERGENCYYY
The height of the building is approximately 27.62 feet. Rounded to the nearest hundredth, the answer is 27.62 feet.
What connection exists between height and separation?In arithmetic, we use angles and distance to determine an object's height. The distance between the items is measured horizontally, and the height of an object is determined by the angle of the top of the object with respect to the horizontal.
What use do height and distance serve in everyday life?Trigonometry includes heights and distances, and it has numerous uses in practical daily life. It is used to determine the distance between any two objects, including heavenly bodies or other objects, as well as the height of towers, buildings, mountains, etc. Astronauts, surveyors, architects, and navigators are the main users.
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Evaluate. Write your answer as a fraction or whole number without exponents. 6^-2
[tex]\frac{1}{36}[/tex]
Step-by-step explanation:Negative exponents can be manipulated and solved through exponent properties.
Exponent Properties
There are numerous different exponent properties that allow us to simplify expressions. However, for this question, the important property is known as the negative exponent property. This states that [tex]\displaystyle a^{-b}=\frac{1}{a^b}[/tex]. We can apply this same idea to the question we were given.
Solving
Through the negative exponent property, we know that we can make the exponent positive by taking the reciprocal.
[tex]6^{-2}=\frac{1}{6^2}[/tex]Remember that 6^2 = 36, then solve.
[tex]6^{-2}=\frac{1}{36}[/tex]So, the final answer is 1/36.
Setup a system of equations for the following::
Farmer Swinger started to raise chickens and cows on his farm. Someone asked how many animals he has and Farmer Swinger replies, "I have a total of 35 animals a total number of legs is 102. Can you figure out how many chickens and cows that I have?"
x + y = 35 and 2x + 4y = 102 represents the required system of equations.
What is Equation?Two or more expressions with an Equal sign is called as Equation.
Let x be the number of chickens and y be the number of cows.
Each chicken has 2 legs, so x chickens have 2x legs.
Each cow has 4 legs, so y cows have 4y legs.
The total number of animals is 35 and the total number of legs is 102, so we can set up the following system of equations:
x + y = 35 (the total number of animals)
2x + 4y = 102 (the total number of legs)
Hence, x + y = 35 and 2x + 4y = 102 represents the required system of equations.
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Find all rational zeros, if any, of the following polynomial. P(x)=x^(4)+2x^(3)-7x-14
The zeros of P(x)=x^(4)+2x^(3)-7x-14 are 1, -2, and 2.
To find the rational zeros, we need to use the rational zero theorem. This theorem states that any rational zeros of a polynomial must be a factor of the constant term (in this case, -14) divided by a factor of the leading coefficient (in this case, 1).
So, the possible rational zeros of this polynomial are ±1, ±2, ±7, and ±14.
To confirm if these are indeed the zeros of the polynomial, we can plug each of these numbers into the polynomial and determine if the result is 0.
For example, when x=7, P(7) = 7^(4)+2(7^(3))-7(7)-14 = 2401+882-49-14 = 1720. Since the result is not 0, 7 is not a zero of the polynomial.
So when x=2,
P(2) = 2^(4)+2(2^(3))-7(2)-14
= 16+16-14-14 = 0.
Therefore, 2 is a zero of the polynomial.
By repeating this process for all possible rational zeros, we can determine that the zeros of this polynomial are 1, -2, and 2.
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67 07 – 4(67) 4 a) -25.633 b) -258.429 c) -21.057 d) -20.1 Find the value of the expression. Give the result as a decimal. ()? + (5.9) (3.6) a) 21.28 b) 21.265 Oc) 21.49 d) 22.28
The expression 67 07 – 4(67) 4 + (5.9) (3.6) is equal to 21.265. Correct answer is option B.
To solve this expression, we must first understand the order of operations. The order of operations is Parentheses, Exponents, Multiplication and Division, Addition and Subtraction. We start by solving the part of the expression in parentheses, which is 4(67) 4. We must do this first, as parentheses indicate that the expression within should be evaluated first.
This expression is equal to 268. We then proceed to solve the expression from left to right, following the order of operations. 67 07 – 268 = -258.429. We then add the part of the expression with the parentheses, which is (5.9) (3.6). -258.429 + (5.9) (3.6) = -21.265.
Therefore, the value of the expression 67 07 – 4(67) 4 + (5.9) (3.6) is equal to 21.265 as a decimal. Therefore the Correct answer is option B.
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Find a basis for the orthogonal complement of the subspace of R4 spanned by the following vectors. v1 = (1, −1, 7, 5), v2 = (2, −1, 1, 6), v3 = (1, 0, −6, 1) The required basis can be written in the form {(x, y, 1, 0), (z, w, 0, 1)}. Enter the values of x, y, z, and w (in that order) into the answer box below, separated with commas.
The values of x, y, z, and w are 6, -13, -1, and 4, respectively. So, the answer is 6, -13, -1, 4.
To find a basis for the orthogonal complement of the subspace of R4 spanned by the given vectors, we need to find the null space of the matrix formed by the given vectors. The matrix is:
```
1 -1 7 5
2 -1 1 6
1 0 -6 1
```
We can use the reduced row echelon form to find the null space of this matrix. The reduced row echelon form of this matrix is:
```
1 0 -6 1
0 1 13 -4
0 0 0 0
```
The null space of this matrix is the set of all vectors (x, y, z, w) such that:
```
x - 6z + w = 0
y + 13z - 4w = 0
```
We can write the null space in parametric form as:
```
x = 6z - w
y = -13z + 4w
z = z
w = w
```
We can write the null space in the form {(x, y, 1, 0), (z, w, 0, 1)} by setting z = 1 and w = 0 in the first vector, and setting z = 0 and w = 1 in the second vector. This gives us:
```
x = 6(1) - 0 = 6
y = -13(1) + 4(0) = -13
z = 6(0) - 1 = -1
w = -13(0) + 4(1) = 4
```
Therefore, the basis for the orthogonal complement of the subspace of R4 spanned by the given vectors is {(6, -13, 1, 0), (-1, 4, 0, 1)}. The values of x, y, z, and w are 6, -13, -1, and 4, respectively. So, the answer is 6, -13, -1, 4.
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Find the area of the shaded sector. Round your
answer to the nearest hundredth
154
7 km
65.85 km²
20.96 km
65.85 km
20.96 km²
The area of the sector is (a) 65.85 km square
How to determine the area of the sectorFrom the question, we have the following parameters that can be used in our computation:
Angle = 154 degrees
Radius = 7 km
Using the above as a guide, we have the following:
Sector area = Angle/360 * πr²
substitute the known values in the above equation, so, we have the following representation
Sector area = 154/360 * π * 7²
Evaluate
Sector area = 65.85
Hence, the area is 65.85 km square
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A toy car is placed on the floor. What is the total distance travelled by the car in metres?
If the car moves in a straight line starting from the rest, then the total distance travelled by the toy car is 18m.
We first break the motion of the car into two parts:
So, the first part of the motion.
We know that the car accelerates from rest to a velocity of 5 m/s with a constant acceleration for 4 seconds.
We use the equation of motion : v = u + at;
where v = final velocity, u = initial velocity (which is 0 in this case), a is = acceleration, and t = time.
⇒ a = (v - u)/t
⇒ a = (5 - 0)/4,
⇒ a = 1.25 m/s²
Now, we can use another equation of motion to find the distance travelled during this time:
⇒ s = ut + (1/2)at²
where s=distance travelled, u=initial velocity (which is 0), a=acceleration, and t = time.
Substituting the values,
We get,
⇒ s = 0 + (1/2)(1.25)(4)²
⇒ s = 10 m
So, the distance travelled during the first part of the motion is 10 meters.
In the second part of the motion,
Car decelerates from 5 m/s to a complete stop with a constant deacceleration of 1 m/s² for 2 seconds.
So, we have : s = ut + (1/2)at²
where s = distance travelled, u = initial velocity (5 m/s), a = deacceleration (-1 m/s² ), and t = time.
Substituting the values,
We get,
⇒ s = 5(2) + (1/2)(-1)(2)²
⇒ s = 8m
So, the distance travelled during second part of motion is 8 meters.
The total distance travelled by the car is sum of distances travelled during the motion is :
⇒ Total distance = 10 m + 8 m = 18 m
Therefore, the total distance travelled is 18 meters.
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The given question is incomplete, the complete question is
A toy car is placed on the floor. It moves in a straight line starting from the rest, It travels with constant acceleration for 4 seconds reaching a velocity of 5 m/s, It then slows down with constant deacceleration of 1 m/s² for 2 seconds, It then hits a wall and stops.
What is the total distance travelled by the car in meters?
Write an equation for the description. A number x increase by 16 is 124
The equation for the description for given number is x + 16 = 124
"A number x increases by 16" means that we start with a certain number, which we don't know yet, and then add 16 to it. So, we can represent this as:
x + 16
The next part of the description tells us that the result of this addition is 124. So, we can set up an equation by equating this expression to 124, like this:
x + 16 = 124
This is the equation that represents the given description. To find the value of x, we can solve for it by subtracting 16 from both sides of the equation:
x = 124 - 16
x = 108
So, the value of x that satisfies the given description is 108.
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Boris is ordering supplies for his company. He ordered 15 boxes of pencils and 24 boxes of pens. What is the ratio of boxes of pens ordered to boxes of pencils ordered?
A.
5:8
B.
1:15
C.
8:5
D.
15:1
Answer:
To find the ratio of boxes of pens ordered to boxes of pencils ordered, we need to divide the number of boxes of pens by the number of boxes of pencils:
24 boxes of pens ÷ 15 boxes of pencils = 8/5
Therefore, the ratio of boxes of pens ordered to boxes of pencils ordered is 8:5.
The correct answer is (C) 8:5.
Answer:
C. 8:5
Step-by-step explanation:
pens: 24
pencils: 15
pens : pencils
24 : 15 = 8 : 5
What are the following Sets, Factors, Real numbers for these two
rational expressions: 22x + 11 x2 – 3x – 10
1 – 2c 20c2 + 10c
Its set of factors would include all real numbers and the complex roots of the polynomial.
The first rational expression, 22x + 11 x2 – 3x – 10, is a polynomial of degree 2. Its set of factors would include all real numbers, since it has no real-number roots. The second rational expression, 1 – 2c 20c2 + 10c, is a polynomial of degree 3. Its set of factors would include all real numbers and the complex roots of the polynomial.
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calculate the height of n of the flag pole
give your answer in meters to 1 dp
Using a trigonometric relation we will see that the height is 8.62m
How to get the height of the flag pole?On the diagram we can see a right triangle, where we know one of the angles and the adjacent cathetus and we want to find the opposite cathetus.
Then we can use the trigonometric relation:
tan(a) = (opposite cathetus)/(adjacent cathetus)
Replacing the values that we know we will get:
tan(72°) = n/2.8m
2.8m*tan(72°) =n = 8.62m
That is the height.
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