Answer:
D
Step-by-step explanation:
It looks line you are asking for the slope. The slope is the change in y over the change in x
Ordered pairs are writing in the from (x,y) The first number is the x value and the second number is the y value.
[tex]\frac{0 - (-13)}{-8 - (-2)}[/tex] I am subtracting the y's on the top and the x's on the bottom.
[tex]\frac{0 + 13}{-8 + 2}[/tex] Subtracting a negative is the same as adding a positive.
[tex]\frac{13}{-6}[/tex] The fraction is negative, so the negative sign can go on the top or the bottom.
In simple interest, a principle of money doubles itself in 10 years. Find the number of years it will take to triple itself.
Help me pls
Answer: 20 years
Step-by-step explanation:
Let M be the sum of money invested.
Given Sum of money doubles itself in 10 years.
Then, M will become 2M in 10 years.
Now we can calculate interest for ten years as given below.
From the above calculation, M is the interest for the first 10 years.
In simple interest, interest earned will be the same every year.
So, interest earned in the next 10 years also will be M.
So it will take 20 years.
Thank you if you can give me a brainliest.
For each function, identify the vertex, axis of symmetry, y-intercept, and x-intercepts. Then state if each parabola opens upward or downward
13) Vertex = (1, -5)
y - intercept = -6
x - intercept is non - existent
The parabola opens downward.
How to Interpret Parabola function curves?13) We are given the parabolic function;
y = -x² + 2x - 6
x of vertex = x of axis of symmetry: x = -b/2a = -2/(2 * -1) = 1
y of vertex; y = f(1) = -(1)² + 2(1) - 6 = -5
Vertex = (1, -5)
y - intercept = -6
x - intercept is at y = 0 and as such are; (1 + √-5) and (1 - √-5)
Since a < 0, the parabola opens downward.
14) We are given the parabolic function;
y = -3(x - 2)² + 12
y = -3(x² - 4x + 4) + 12
y = -3x² + 12x - 12 + 12
y = -3x² + 12x
x of vertex = x of axis of symmetry: x = -b/2a = -12/(2 * -3) = 2
y of vertex; y = f(2) = -3(2)² + 12(2) = 12
Vertex = (2, 12)
y - intercept = 0
x - intercept is at y = 0 which is x = 4
Since a < 0, the parabola opens downward.
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In 1992, the moose population in a park was measured to be 5200. by 1997, the population was measured again to be 7100 if the population continues to changed linearly find an equation for the moose population p as a function of t the years since 1986
The linear equation for the moose population p as a function of t the years since 1986 is P(t) = 380t + 2920.
What are linear equations in two variables?The equations with two variables where each variable has the largest exponent order of 1 having one, zero, or an infinite number of solutions, and are referred to as linear equations in two variables. A linear equation with two variables has the conventional form ax + by + c = 0, where x and y are the variables. Additionally, the answers can be expressed as ordered pairs, like (x, y).
What are forms of linear equations?Linear equations have three main forms which are as follows:
Y=mx+b, where m is the line's slope and b is the y-intercept, is the formula for slope-intercept form.Ax+By=C is how standard form is expressed, with A, B, and C all being constants.(Y-Y1)=m(X-X1), where m is the slope and (X1, Y1) is a known point on the line, is how the point-slope form is expressed.We will consider x on the graph to be years since 1986 and y on the graph to be the number of Moose.
We have two points on the graph: (6, 5200) and (11, 7100)
Using the slope formula m = (y2 - y1)/(x2 - x1), we can find the slope of this line:
m = (y2 - y1)/(x2 - x1)
m = (7100 - 5200)/(11 - 6)
m = 1900/5
m = 380
Now, that we have the slope of the line, we can use the point-slope formula (y - y1) = m(x - x1) to find the equation for the line. Here, we're using the first point, but either point will produce the same answer.
(y - y1) = m(x - x1)
y - 5200 = 380(x - 6)
y - 5200 = 380x - 2280
y - 5200 + 5200 = 380x - 2280 + 5200
y = 380x + 2920
Since the equation that is being sought is supposed to be in terms of P and t, We will replace y with P and x with t.
Hence, the equation will be P(t) = 380t + 2920.
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Bookwork code: L64
Calculator
not allowed
This is a new version of the question. Make sure you start new workings.
Spinner A has pink, black and blue sections.
Spinner B has pink and black sections only.
Annabelle spins each spinner once.
Work out how many possible ways there are for at least
one of the spinners to land on pink.
(Hint: copy and complete the tree diagram first.)
Possible ways there are for at least one of the spinners to land on the pink is 2 / 3.
Given spinner A has pink, black, and blue sections.
The number of possible outcomes of spinner A to land not on pink is 2/3
Given spinner B has pink and black sections.
So, the number of possible outcomes of spinner B to land not on pink is 1/2
Annabelle spins each spinner once
possible ways not land on pink = 2/3 * 1/2 = 1/3
Possible ways there are for at least one of the spinners to land on the pink is
= 1 - possible ways not to land on the pink
= 1 - 1/3
= 2 / 3
Possible ways there are for at least one of the spinners to land on the pink is 2 / 3.
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This entire concept is difficult for me to understand but I have some grasp of what I’m doing if it’s graphing the equation but doing the reverse, however, is somehow difficult for me. (and yes i need help on all 4 of them)
c. In Euclidean geometry, the interior angles of any triangle add up to 180 degrees. Does this rule apply to triangles in spherical geometry? If not, is there another value that they would always sum to? Explain your answer.
This rule apply to triangles in spherical geometry If there another value that they would always sum to greater than 180 degrees.
What is Euclidean geometry?Euclidean geometry is the study of geometrical shapes (plane and solid) and figures based on different axioms and theorems.
In spherical geometry, angles are defined between great circles, resulting in a spherical trigonometry that differs from ordinary trigonometry in many respects; for example, the sum of the interior angles of a spherical triangle exceeds 180 degrees.
Thus, this rule apply to triangles in spherical geometry If there another value that they would always sum to greater than 180 degrees.
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All else being equal, if you cut the sample size in half, how does this affect the margin of error when using the sample
to make a statistical inference about the mean of the normally distributed population from which it was drawn?
Z S
ME= √n.
The margin of error is multiplied by √2.
Given that All else is equal if you cut the sample size in half and to make a statistical inference about the mean of the normally distributed population from which it was drawn ME=(z+s)/√n.
Margin of error (ME) from the mean can be calculated using the formula ME=(z+s)/√n where
z means it is the corresponding statistic of the given confidence level
s means it is the standard deviation of the sample (or of the population if it is known)
N is the sample size
As we know margin of error is proportional with inverse of √N,
If we will cut the sample size in half, the margin of error is multiplied by √2.
Hence, if sample size is cut in half then the margin of error when using the sample to make statistical inferences about the mean of the normally distributed population from which it was drawn is √2.
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Karen reads a book at a rate of 10 chapters per hour.
How many chapters does she read in 5 hours?
A triangle has base 7 m and area 17.5 m². What is the height?
Answer: Height = 5m
Step-by-step explanation: To solve the height of the triangle we can use the Area formula and substitute the values given to solve for heigh.
A = ( b * h ) / 2
17.5 = (7 * h) / 2
17.5 (*2) = 7 * h
(Remember that everything done to one side has to be done to both. We can multiply by 2 on both sides to eliminate the 2.)
35 = 7 * h
35/7 = h
5 = h
The height of the triangle equals 5.
a physician orders 16 oz of 25% solution to be made from 10% and 50% stock solutions. how many ml of 50% solution are needed?
180ML of 50% solution are needed.
What is a solution?Finding an equation's solutions, which are values (numbers, functions, sets, etc.) that satisfy the equation's condition and often consist of two expressions connected by an equals sign, is known as solving an equation in mathematics. One or more variables are identified as unknowns when looking for a solution. An assignment of values to the unknown variables that establishes the equality in the equation is referred to as a solution. To put it another way, a solution is a value or set of values (one for each unknown) that, when used to replace the unknowns, cause the equation to equal itself. Particularly but not exclusively for polynomial equations, the solution of an equation is frequently referred to as the equation's root.
EXPLANATION : To solve this question, we have initial stock solution of 10% and 50% concentration. We need to make final solution of 25% concentration of volume 16oz. [tex](1oz \approx 30ml)[/tex]
To find :- Volume of 50% required
Let us assume we require x oz volume of 50% stock Solution , Then volume of 10% stock added will be (16-x) oz.
Formula used here:- C1V1 + C2V2 = C3V3
Where C1 = 50% = 0.5 , V1 = x oz & C2 = 10%= 0.1 , V2= 16-x oz
C3 = 25% = 0.25 , V3= 16oz
Putting values we have
(0.5*x) + (0.1(16-x)) = 16*0.25
0.5x + 1.6 - 0.1x = 4
x = 6
Hence Volume of 50% solution = x = 6 oz = 6*30 ml = 180ml
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Please answer the question in photo [ Brainliest + points ]
Answer:
EQ = 47
Step-by-step explanation:
Since Q is midpoint, EQ = QF
or EQ = EF/2
5x + 2 = (9x + 13)/2
10x + 4 = 9x + 13
10x - 9x = 13 - 4
x = 9
EQ = 5x + 2 = 5(9) + 2 = 45 + 2 = 47
For what values of c and d would the rectangles be similar?
By using the definition of similarity and the dimensions of each rectangle, a rectangle with d = 72 and c = 45 fulfills the height to width ratio of 8 / 5. (Correct choice: C)
How to find the dimensions of a rectangle similar to other rectangle
Two rectangles are similar if both hold the same height to width ratio. Mathematically speaking, the two rectangles must fulfill the following requirement:
b / a = d / c (1)
Where:
a - Width of the big rectangle.b - Height of the big rectangle.c - Width of the small rectangle.d - Height of the small rectangle.If a = 50 and b = 80, then the ratio of the second rectangle must be:
d / c = 8 / 5
By direct comparison with any of the four choices, we find that a rectangle with d = 72 and c = 45 fulfills the height to width ratio of 8 / 5.
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help with this please
Answer:
-4-9=-13
Step-by-step explanation:
the small arrow has moved 4 times to the left that makes 4 negative-4..and the large arrow moved 10 times to the left that makes it negative too but the big arrow arised from the tip of the small arrow that means it is -9 NOT -10 be careful.Keep in mind that if arrows face to the left that means subtraction but if moving to the right it means additionthat means as a conclusion the equation is subtraction and it will be[tex]-4-9=-13[/tex]please help!! will mark branliest if correct!!!
Answer:
Remove the negative from the 1 on the first increasing interval
Select all of the true statements.
Answer:
goooooood luccckkkk.....
Convert 549/999 to a decimal. 5.495— .549 .549— .549–..please help
Answer:
.549 (all under bar/repeted)
Step-by-step explanation:
The graph shows the relationship between the amount of time that a backpacker hikes and the distance traveled.
What does (5,6) represent?
What is the equation of the relationship?
a) The meaning of the point (t, s) = (5, 6) is that the backpacker travels a distance of 5 miles in 6 hours.
b) The equation of the relationship between the distance traveled by the backpacker and time taken is equal to s = (6 / 5) · t.
How to analyze linear equations
According to the image attached aside, we find that the distance traveled by the backpacker (s), in miles, is directly proportional to the time taken (t), in hours. In other words, we have the following relationship:
s ∝ t
s = k · t (1)
Where k is the constant of proportionality, in miles per hour.
a) The meaning of the point (t, s) = (5, 6) is that the backpacker travels a distance of 5 miles in 6 hours.
b) To determine the equation of the relationship, we need to calculate the constant of proportionality. If we know that t = 5 h and s = 6 mi, then the equation of the relationship is:
6 = 5 · k
k = 6 / 5
s = (6 / 5) · t
The equation of the relationship between the distance traveled by the backpacker and time taken is equal to s = (6 / 5) · t.
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0.39 repeating as a fraction in simplest form
It depend on the repeating part.
If x = 0.393939… (the repeating part is underlined), then 100x = 39.393939…, and
100x - x = 39.393939… - 0.393939…
99x = 39
x = 39/99 = 13/33
On the other hand, if you mean x = 0.3999…, then 10x = 3.999… and 100x = 39.999…, so that
100x - 10x = 39.999… - 3.999…
90x = 36
x = 36/90 = 2/5
Robin drove from his house to Morgan’s house this graph shows the distance robin had left to travel after driving for t minutes
Morgan’s house is located___ miles from Robins house, and it took Robin__minutes to drive that distance
From the intercepts of the given graph, we have that:
Morgan’s house is located 35 miles from Robin's house, and it took Robin 40 minutes to drive that distance.
What are the intercepts of a function?The x-intercept of a function is given by the value of x when f(x) = 0, that is, the value of x when the function crosses the x-axis.The y-intercept of a function is given by the value of f(x) when x = 0, that is, the value of y when the function crosses the y-axis.For this problem, the axis are given as follows:
x: time in minutes.f(x): remaining distance in miles.The intercepts are given as follows:
y = 35, x = 40.
Hence:
Morgan’s house is located 35 miles from Robin's house, and it took Robin 40 minutes to drive that distance.
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Multiply (4.12 × 10−9)(8.3 × 1015). write the final answer in scientific notation. 34.196 × 10−134 3.4196 × 107 3.4196 × 10−135 34.196 × 106
The product, in scientific notation, can be rewritten as:
3.4196*10²⁵
How to get the product in scientific notation?We want to find the product between the two numbers:
(4.12*10⁹)*(8.3*10¹⁵)
To take it, we can rewrite the product as:
(4.12*8.3)*(10⁹*10¹⁵)
(34.196)*(10⁹⁺¹⁵)
(34.196)*10²⁴
Now, to get this in scientific notation, we need to have only one digit in the left side of the decimal point, then we can rewrite:
(34.196)*10²⁴ = 3.4196*10²⁵
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Can you help me i really dont get it
By using Pythagorean theorem, the shortest distance between planet Q and planet R is 1.25 × 10⁷ kilometers (12.5 million kilometers).
How to find the distance between two planets
The picture shows the geometry between three planets, which represents the three vertices of a right triangle, the straight line distance between the points Q and R represents the hypotenuse of the right triangle. The hypotenuse can be found by using the Pythagorean theorem:
QR = √(PQ² + PR²)
Where QR is the hypotenuse of the right triangle, in kilometers.
If we know that PQ = 3.5 × 10⁶ km and PR = 1.2 × 10⁷ km, then the distance between planet Q and planet R is:
QR = √[(3.5 × 10⁶ km)² + (1.2 × 10⁷ km)²]
QR = 1.25 × 10⁷ km
The shortest distance between planet Q and planet R is 1.25 × 10⁷ kilometers (12.5 million kilometers).
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Please answer the 2 question in photo [ Brainliest + points ]
Answer:
second is obtuse angle .
Step-by-step explanation:
5. 160°
6. 120°
[im not sure what they're asking for but if its degree then this is the answer]
5 $17.00 3-66. Randall and Stephano work in a restaurant. Randall earned $27.50 one day, $25.00 the next day, and $32.50 on the third day. Stephano works fewer hours, but more days. He earned $17.50 one day, $22.50 the next day, $12.50 the third day, $15.00 the fourth day, and $17.00 the fifth day. Who earned the most money? How much more?
Answer:
Randall and the most money. she earned 50 cents more than Stephano did.
Step-by-step explanation:
so it's Randall makes $27.50 on his first day and $25 on a second date and and 32.50 on his third day you would add those up to get $85 in all. now Stefano gets 7.50 22.50 12.50 15.00 and 17.00 dollars , and when you add all those together he gets 84.50 and all. meaning that random made more money by .50 cents.
What is the slope of the line that passes through the points (1, -1) and (-8, -7) Write your answer in simplest form
Answer:
2/3
Step-by-step explanation:
Compute the slope of the line through the following points:
p_1 = (1, -1) and p_2 = (-8, -7)
The slope of the line through (x_1, y_1) and (x_2, y_2) is:
(y_2 - y_1)/(x_2 - x_1)
Substitute (x_1, y_1) = (1, -1) and (x_2, y_2) = (-8, -7):
= (-7 - -1)/(-8 - 1)
-8 - 1 = -(8 + 1):
= (-7 - -1)/(-(8 + 1))
8 + 1 = 9:
= (-7 - -1)/(-9)
(-1)^2 = 1:
= (-7 + 1)/(-9)
-7 + 1 = -6:
= (-6)/(-9)
The gcd of -6 and -9 is -3, so (-6)/(-9) = (-3×2)/(-3×3) = (-3)/(-3)×2/3 = 2/3:
Answer: = 2/3
in a game of poker, what is the probability that a five-card hand will contain (a) a straight (five cards in unbroken numerical sequence)
The probability that a five-card hand will contain a straight = 5/1274
There are 52 cards in a deck from which each 13 cards are from 4 different suits (clubs, diamonds, spades and hearts) in a game of poker.
Each 13 cards from high to low are Ace, 2, 3, 4, 5, 6, 7, 8, 9, 10, Jack, Queen, King. So a straight of five cards, i.e., five cards in unbroken numerical sequence would be got only from 10 cards in a sequence.
So the possible ways to get a single straight five from all four suits = [tex]4^5[/tex]
Now as we doesn't need all 5 cards from a single suit, we can ignore 4 ways from the above number. i.e., [tex]4^5-4 = 1020[/tex] ways.
Hence the possible ways to get a straight five from 10 cards from all four suits = 10 x 1020 = 10200 ways
Total number of ways to select 5 cards from 52 cards = 52C5
Thus,
The probability that a five-card hand will contain a straight = 10200 / 52C5
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Make r the subject of 5r+1= a(m + r)
Answer:
See below
Step-by-step explanation:
xpand R sid to get
5r+1 = am + ar subtract 'ar' from both sides
5r - ar + 1 = am factor out 'a'
r ( 5-a) + 1 = am
r (5-a) = am-1 divide both sides by ' 5-a'
r = (am-1 ) / (5-a)
gym lockers are to be numbered from 1 through 99 using metal numbers to be nailed onto each locker. how many 7s are needed?
The computation shows that there can be 14 7s that will be needed.
How to compute the value?From the information, the gym lockers are to be numbered from 1 through 99 using metal numbers to be nailed onto each locker.
The number of 7s that can be found will be:
= 99/7
= 14
Therefore, there can be 14 7s.
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Select the correct answer. The difference of two numbers is 8. When twice the first number is added to three times the second number, the result is 51. What are the two numbers? A. 12 and 4 B. 15 and 7 C. 20 and 12 D. 23 and 15 Reset Next
An expression is a combination of terms that are combined by using mathematical operations such as subtraction, addition, multiplication, and division.
The numbers are 15 and 7.
What is an expression?An expression is a combination of terms that are combined by using mathematical operations such as subtraction, addition, multiplication, and division.
We have,
Let the two numbers be M and N.
The difference between the two numbers is 8.
i.e M - N = 8
M = 8 + N ____(1)
When twice the first number is added to three times the second number, the result is 51.
Let the first number = M
i.e 2M + 3N = 51 _____(2)
Now,
2 ( 8 + N ) + 3N = 51
16 + 2N + 3N = 51
5N = 51 - 16
5N = 35
N = 7 put in (1)
M = 8 + 7 = 15
Thus the numbers are 15 and 7.
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help me understand this assignment and this one
Answer:
Ok, since this is not a multiple choice question, I'll tell you how I would write it.
Step-by-step explanation:
It stopped snowing for 10 to 12 hours after the storm and then started snowing again. This is because you can see that the y value (amount of snow on the ground in inches) has no change between 10 to 12 hours after the storm began.
For the second part, Think of the independent variable as the cause(its value is independent of other variables) and the dependent variable as the effect, essentially the value that depends on changes in the independent variable. In this case it tells you that the perimeter of a square depends on the length, so that means that the length is independent and the perimeter of the square is dependent. So, the dependent variable is the perimeter, because the perimeter of a square depends on the length.
A function relating these variables is K(x) = y since the dependent variable (y) depends on the independent variable (x)
Now for the last part that says So K(5) = ___ meaning if 5 ___ I don't really understand what it is asking for, since K(x) = y then K(5) would equal whatever y is when x is 5, but k(5) could also equal 5k if we were just evaluating.
A calculator displays 8.4E9. How do you write 8.4E9 in scientific notation?
According to the given statement 8.4E9 can be written in scientific notation as 8.4 × 10⁹
What is Scientific Notation?Numbers that are either too large or too little to be conveniently stated in decimal form can be expressed using scientific notation.
If a number between 1 and 10 is multiplied by a power of 10, the result is written in scientific notation.
The major benefit of scientific notation is that it enables us to scale down extremely large or extremely small numbers into sizes that are much easier to handle. These numbers are much simpler to work with when they are written in scientific notation.
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