The equation of the image is x = 32 - 2y which is dilated by a scale factor of 1/4 about the center.
What is dilation?Dilation is a process for creating similar figures by modifying the dimensions.
To dilate a line by a scale factor of 1/4 about the center, we can first find the coordinates of the center of dilation.
Since no center is given in the problem, we can assume that the center is the origin (0,0).
To find the equation of the image, we need to apply the dilation to the original line. The dilation multiplies all distances by the scale factor, so the image of the point (x, y) is (1/4)x, (1/4)y).
So, the image of line 8 - 2y = x under this dilation is:
8 - 2(1/4)y = (1/4)x
8 - (1/2)y = (1/4)x
32 - 2y = x
Therefore, the equation of the image is x = 32 - 2y.
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Write a story problem:
100 - 20 - 4 =
Answer: a ticket to an amusement park is $100 per person. you have a coupon for $20 off of the admission price. the amusement park is also having a promotion where if you bring an empty pepsi can you can take an additional $4 off of the total admission cost. how much do you have to pay to be admitted to the amusement park after the coupons? (it would be $76)
Step-by-step explanation: my brain thought this up
Answer:
Step-by-step explanation:
Mikes mom gave him 100 dollars to spend and his favorite toy shop. Mike bought a Lego set which cost him 20 dollars. When he bought a lollipop which cost him 4 dollars.
The pizza shown has a radius of 13 cm. What is the approximate area of the pizza? (Use 3.14 for .)
Answer:
530.66 cm²
Step-by-step explanation:
Pizza has a circle shape
The formula for the area of the circle is
A = π · r²
r = 13 cm
π = 3.14
3.14 x 13² = 3.14 x 169 = 530.66 cm²
So, the area of the pizza is 530.66 cm²
Answer:
530.66cm^2
Step-by-step explanation:
since a pizza is in the shape of a circle, we can use the formula π[tex]r^{2}[/tex] and here the radius is r which is 13cm, and since you asked to use 3.14 as pi's value,
=3.14*(13^2)cm
=3.14*169cm
is approximately = 530.66cm^2
Susie buys a car on hire purchase. The car costs R130 000. She pays a 10% deposit on the cash price and will have to pay monthly instalments of R4 600 for a period of three years. David buys the same car, but chooses another option where he has to pay a 35% deposit on the cash price and monthly instalments of R3 950 for two years.
3.1.1 Calculate the HP price for both options.
3.1.2 Calculate the difference between the total price paid by Susie and by David
3.1.3 Calculate the interest that Susie and David have to pay as a percentage of the cash price
1. HP price for Susie is R 282600 and David is R 179300
2. The difference between the total price paid by Susie and David is R 103300
3. The interest that Susie and David have to pay as a percentage of the cash price is 117.38% and 37.92%
What is the HP price:The HP price, also known as the hire purchase price, is the total amount that a buyer pays for a product when purchasing it through a hire purchase agreement.
It includes the cash price of the product plus any interest and fees charged by the lender.
Here we have
3.1.1, For Susie:
The cash price of the car is R 130000.
She pays a 10% deposit, which is:
= [10/100] × 130000 = R 13000
=> HP price = the cash price - the deposit
=> 130000 - 13000 = R 117000
She will pay monthly installments of R 4600 for 3 years,
which is 36 months.
Therefore, the total amount she will pay is:
36 x 4600 = R 165600
Therefore, the total amount she will pay is R 165600
The HP price for Susie is,
117000 + 165600 = R 282600
For David:
The cash price of the car is R 130000. He pays a 35% deposit, which is:
=> [ 35/100] × 130000 = R 45500
The HP price = 130000 - 45500 = 84500
He will pay monthly installments of R 3950 for 2 years, which is 24 months. Therefore, the total amount he will pay is:
24 × 3950 = 94800
The HP price for David is, therefore:
=> 84500 + 94800 = R 179300
3.1.2, The difference between the total price paid by Susie and by David
= 282600 - 179300 = R 103300
3.1.3
For Susie:
The total interest she has to pay is the difference between the HP price and the cash price, which is:
=> 282600 - 130000 = R 152600
The interest rate as a percentage of the cash price is:
=> (152600/130000) × 100% = 117.38%
For David:
The total interest he has to pay is the difference between the HP price and the cash price, which is:
=> 179 300 - 130 000 = R 49 300
The interest rate as a percentage of the cash price is:
=> (49 300/130000) × 100% = 37.92%
Therefore,
1. HP price for Susie is R 282600 and David is R 179300
2. The difference between the total price paid by Susie and David is R 103300
3. The interest that Susie and David have to pay as a percentage of the cash price is 117.38% and 37.92%
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Kneaders in Lehi sold 4000 rolls at Thanksgiving time last year. This year they expect a 22% increase in sales...
How many rolls will Kneaders in Lehi bake this Thanksgiving rounded to the nearest whole roll?
Step-by-step explanation:
If Kneaders in Lehi sold 4000 rolls last year and expects a 22% increase in sales this year, the number of rolls they will bake this Thanksgiving can be calculated as follows:
Calculate the 22% increase in sales:
22% of 4000 = 0.22 x 4000 = 880
Add the increase to last year's sales to get the total expected sales this year:
4000 + 880 = 4880
Therefore, Kneaders in Lehi will bake approximately 4880 rolls this Thanksgiving rounded to the nearest whole roll.
Answer:
4,880 rolls, see explanation below :)
Step-by-step explanation:
1.22(4000)= 4,880
and you instantly get your answer.
if you don't understand I basically did 1.22 times 4000 and got 4,880.
Formula: X + %increase/decrease x orginal amount/amount sold last year of rolls, (we can assume there is an invisible 1 in front of the x)
Basically Everything Behind This, Kind of (sorry I'm not the best explainer! :( ;
Here in this case 22% as a decimal is 0.22, how we get to a decimal from a percent: 22 divided by a 100= 0.22. and we got the decimal for 22%!
So X + 0.22= 1.22, and remember the X has an invisible 1 in front of it. so 1 + 0.22= 1.22 in other words.
Now the other value we have is 4000, so we multiply it by 1.22 and get 4,880. And this is how we got to our answer.
Ming was planning a trip to Western Samoa. Before going, she did some research and learned that the exchange rate is 8 Tala for $2.75. How many Tala would she get if she exchanged $50?
145.45 Tala
6.06 Tala
18.18 Tala
150 Tala
If f(v)=8v^(4)+34v^(3)-26v^(2)+21v+11, use synthetic division to find f(-5) Submit
By applying synthetic division concept, it can be concluded that if f(v) = 8v⁴ + 34v³ - 26v² + 21v + 11, then, f(-5) = 6.
Synthetic division is a shorthand way of dividing polynomials where we can divide the coefficients of the polynomial by omitting variables and exponents. As a result, we get the coefficient of the quotient and the remainder.
Polynomial remainder theorem states that the value of p in argument b is equal to the remainder of the polynomial division p(x) / (x - b). Specifically, p(x) is divided by x - b with a remainder of zero if, and only if, b is a root of p.
We have the following polynomial:
f(v) = 8v⁴ + 34v³ - 26v² + 21v + 11
To find f(-5) using synthetic division, we will divide the polynomial f(v) by (z + 5). The steps are as follows:
1. Put the coefficients in a row and multiply the outside coefficient by the divisor: 8(-5)= -40.
2. Add the inside coefficient to the product from the previous step: -40 + 34 = -6.
3. Multiply the result from the previous step by the divisor: -6(-5) = 30.
4. Add the next coefficient to the product from the previous step: 30 - 26 = 4.
5. Multiply the result from the previous step by the divisor: 4(-5) = -20.
6. Add the next coefficient to the product from the previous step: -20 + 21 = 1.
7. Multiply the result from the previous step by the divisor: 1(-5) = -5.
8. Add the last coefficient to the product from the previous step: -5 + 11 = 6.
The final result of the synthetic division is 6, so the answer to the question is f(-5) = 6.
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.....................heop
The correct statement regarding the domain and the range of the quadratic function are given as follows:
D. The domain is all real numbers, the range is y ≥ -4.
How to find the domain and the range of a function?The domain of a function is the set that contains all the values assumed by the input of the function.The range of a function is the set that contains all the values assumed by the output of the function.Hence, on a graph, the values are given as follows:
Domain: values of x through which the graph of the function passes.Range: values of y through which the graph of the function passes.Meaning that option D is correct.
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What is the the correct square angle of a triangle
is this a trick question?
Answer:
no it is not a trick question
Sketch a graph of a function that satisfies the given limit statement:
[tex]\lim_{x \to \ 2^+} h(x)=5[/tex]
The value of function h(x)=5 at x tends to [tex]2^{+}[/tex] will be 5.
What is functionIn mathematics, a functional equation is, in the broadest sense, an equation in which one or more functions appear as variable. A functional equation, however, is frequently used in a more narrow sense, where it refers to an equation that connects many values of the same function. For instance, the logarithmic functional equation effectively describes the logarithm functions.
log(x×y)=log(x)+log(y).
Given equationlim h(x)=5 at x tends to [tex]2^{+}[/tex]
Given function is constant.
Value of function at x tends to [tex]2^{+}[/tex]will be 5
Hence, the value of h(x)=5 at x tends to [tex]2^{+}[/tex] will be 5
Graph of the given function is attached below;
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Keith will rent a car for the weekend. He can choose one of two plans. The first plan has an initial fee of $40 and costs an additional $0. 60 per mile driven. The second plan has no initial fee but costs $0. 80 per mile driven
200 miles is covered by Keith when the plans have the same price. When both plans have the same price, the cost is $160.
Two rents plans and the costs, the miles traveled by Keith when the two plans cost the same and the cost when the two plans cost the same, quadratic equations will be
Let the total miles covered for each plan be
The cost of the first plan would be
cost of the plan A=40+0.60x
The cost of the second plan would be
Cost of second plan=0.80x
If the two cost is the same, then
[tex]0.80x=40+0.60x[/tex]
Solve for x by collecting like terms
[tex]0.80x-0.60x=40[/tex]
[tex]0.20x=40[/tex]
[tex]x=\frac{40}{0.20}[/tex]
[tex]x=200[/tex]
The cost when the two plans cost the same would be
[tex]0.80x=0.80(200)=160[/tex]
or
[tex]40+0.60x=40+0.60(200)=160[/tex]
Hence, the miles covered when the plans cost the same is 200 miles.
The cost when the two plans cost the same is $160.
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PT2 really need help
The value of x for each rectangle is given as follows:
5) x = 7.
7) x = 10.
How to obtain the area of a rectangle?The area of a rectangle of base b and height h is given by the multiplication of these two dimensions, as follows:
A = bh.
Hence, for item 5, the value of x is given as follows:
3(5x - 2) = 99
5x - 2 = 33
5x = 35
x = 7.
For item 7, the value of x is obtained as follows:
3(4x - 3) = 111
4x - 3 = 37
4x = 40
x = 40/4
x = 10.
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Fill in the table for y = 2x² - 6.
X y
-0
2
4
Answer:
6969696969696969695969696966969696969696969699६9६9६9६959596869494982285959585868586868696959695968684828282828३8474747474848475757718१883757474839485747747474747474747474747484858384848485858587575757585848484848585857494857585958584858585858685969686(696066969686868696960
what are the domain and range of the function f(x)=2^x+1
The domain of a function is the set of all possible input values (x) for which the function is defined.
The range of a function is the set of all possible output values (f(x)) that the function can produce.
For the given function f(x) = 2^(x+1), the domain includes all real numbers because we can substitute any real number for x and obtain a valid output.
To find the range, we can examine the behavior of the function as x approaches positive and negative infinity. As x approaches negative infinity, the exponent (x+1) becomes very large negative number, and 2^(x+1) approaches zero. As x approaches positive infinity, the exponent (x+1) becomes very large positive number, and 2^(x+1) approaches infinity. Therefore, the range of the function is (0, infinity).
So, the domain is (-infinity, infinity) and the range is (0, infinity).
Find the mark down rate for dress which was originally tagged at Php 5,220 but is now being sold at Php 4,900.
The mark down rate for the dress originally tagged at Php 5,220 but now being sold at Php 4,900 is 6.13%.
To calculate the mark down rate, use the formula:
Mark down rate = (Original Price - Discounted Price) / Original Price
Plugging in the numbers:
Mark down rate = (5,220 - 4,900) / 5,220 = 0.0613
To convert to a percentage, multiply 0.062 by 100 and you will get 6.13%.
Therefore, the mark down rate for the dress is 6.13%.
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I’ll mark brainliest
Answer:
acute
Step-by-step explanation:
9 is bigger than 6
12 is bigger than 9
therefore all the angles will be smaller than a right angle
this makes the triangle acute
(Inserta los símbolos +, -,•,0 +
27 ___________3_________ 5 _______2 = 19
The symbols, in accordance with the provided assertion, are 27 ÷ 3 + 5 × 2 = 19
How do I recognise a symbol?A object must imply a meaning that is distinct from its true definition in order to be referred to as a symbol; a symbol is a thing that transcends class or type. A emblem might signify several different things.
What does the three angled symbols mean?The triple bar, also known as the tribar, or, is a sign that denotes the equality of two distinct objects and has a variety of context-dependent meanings. Logic and arithmetic are its two primary applications. It looks like a third line attached to an equals symbol (=).
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Give three points that are equivalent to the polar point (7,40°). Write the three points in polar form, with the angles in degrees.
Three points that are equivalent to the polar point (7,40°) are (7,400°), (7,-320°), and (7,760°). These points are equivalent because they all have the same magnitude of 7, but their angles differ by multiples of 360°.
In polar form, these points are written as:
- (7,400°) = 7cis(400°)
- (7,-320°) = 7cis(-320°)
- (7,760°) = 7cis(760°)
These points are equivalent because the angle in polar coordinates is measured modulo 360°. This means that any angle that differs by a multiple of 360° will be equivalent. For example, 40° is equivalent to 400° because 400° - 40° = 360°. Similarly, -320° is equivalent to 40° because -320° + 360° = 40°, and 760° is equivalent to 40° because 760° - 720° = 40°.
In conclusion, the three points that are equivalent to the polar point (7,40°) are (7,400°), (7,-320°), and (7,760°), and they are written in polar form as 7cis(400°), 7cis(-320°), and 7cis(760°).
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Question 19 (4 Points) Saving. Enter A Whole Number. If You Are "Charged" 3¢ For Each Use Of A Straightedge And 5¢ For Each Use Of A Compass, Performing The Cheapest) Straightedge And Compass Construction Of Two Perpendicular Straight Lines Will Cost You
A/ Any Time You Must Move The Straightedge Or Compass, You Incur A New Charge.
The cheapest straightedge and compass construction of two perpendicular straight lines will cost you 11¢. This is because each use of the straightedge costs 3¢, and each use of the compass costs 5¢. Therefore, it takes three uses of the straightedge (3 x 3¢ = 9¢) and two uses of the compass (2 x 5¢ = 10¢) to create the two perpendicular straight lines, for a total of 11¢. So it will cost you 11¢
To create the perpendicular lines, first move the straightedge to create a line segment with one endpoint at the origin. Next, place the compass at one endpoint of the line segment and draw an arc with the desired radius, cutting the line segment at another point. Then, repeat this process with the straightedge and compass, but with the compass at the new endpoint and draw a perpendicular arc, intersecting the original arc. This will create the two perpendicular lines.
Each time you move the straightedge or compass, you incur a new charge. As outlined above, it will take three moves of the straightedge and two moves of the compass, for a total of five moves and a cost of 11¢.
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Let x is equal to the number of heads observed. x is what we called rar P(x=2)=(1)/(4) ,P(x)=(1)=(2)/(4)
The probability of observing 2 heads is 1/4, the probability of observing 1 head is 2/4, and the probability of observing 0 heads is 1/4.
The question is asking what the probability of getting two heads (x=2) and one head (x=1) when tossing a coin.
The probability of getting two heads is P(x=2) = 1/4 and the probability of getting one head is P(x=1) = 2/4.
It is important to remember that the sum of all the probabilities in an experiment must equal 1.
In this case, P(x=2) + P(x=1) = 1/4 + 2/4 = 3/4. This means that the probability of observing 0 heads, represented as P(x=0), must be equal to 1/4 in order for the sum of all the probabilities to equal 1.
In conclusion, the variable x is used to represent the number of heads observed in a coin toss experiment, and the probabilities of observing different numbers of heads are given as fractions.
The probability of observing 2 heads is 1/4, the probability of observing 1 head is 2/4, and the probability of observing 0 heads is 1/4.
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A company's production process has 5 steps of preparing, manufacturing, refining, validating, and shipping. Let's say there are 12 preparation stations and 4 manufacturing stations and 2 refining stations and 2 validating stations and 2 shipping stations.
If it is equally likely for a product to be prepared on any of the preparation stations, please find the probability that randomly chosen product was prepared on preparation stations 6, 7, and 8.
Therefore, the probability that a randomly chosen product was prepared on preparation stations 6, 7, and 8 is 0.25, or 25%.
The probability that a randomly chosen product was prepared on preparation stations 6, 7, and 8 can be found using the formula:
P(event) = number of favorable outcomes / total number of possible outcomes
In this case, the number of favorable outcomes is 3, since there are 3 preparation stations that we are interested in (6, 7, and 8). The total number of possible outcomes is 12, since there are 12 preparation stations in total.
So, the probability that a randomly chosen product was prepared on preparation stations 6, 7, and 8 is:
P(event) = 3 / 12
P(event) = 0.25
Therefore, the probability that a randomly chosen product was prepared on preparation stations 6, 7, and 8 is 0.25, or 25%.
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Find a formula for the exponential function passing through the points (-2,768) and (2,3)
The formula for the exponential function passing through the points (-2,768) and (2, 3) is:
[tex]y = 48 \times ((3/768)^{1/4})^x[/tex]
We have,
To find a formula for the exponential function passing through the points (-2, 768) and (2, 3), we can use the general form of an exponential function: y = a x [tex]b^x[/tex], where "a" is the initial value or y-intercept, and "b" is the base of the exponential function.
Let's start with the first point (-2, 768).
Plugging in the values, we have:
768 = a x [tex]b^{-2}[/tex]
Next, let's consider the second point (2, 3).
Plugging in the values, we have:
3 = a x b²
Now we have a system of equations:
768 = a x [tex]b^{-2}[/tex]
3 = a x b²
To solve this system, we can divide the second equation by the first equation:
3/768 = (a x b²) / (a x [tex]b^{-2}[/tex])
Simplifying further:
3/768 = [tex]b^4[/tex]
Taking the fourth root of both sides:
[tex](b^4)^{1/4} = (3/768)^{1/4}\\b = (3/768)^{1/4}[/tex]
Now we can substitute the value of b back into either of the original equations to solve for a.
Let's use the first equation:
[tex]768 = a \times b^{-2}[/tex]
Substituting [tex]b = (3/768)^{1/4}:[/tex]
[tex]768 = a \times ((3/768)^{1/4})^{-2}[/tex]
Simplifying:
[tex]768 = a \times (3/768)^{-1/2}[/tex]
Now, we can simplify the right-hand side:
[tex]768 = a \tmes (768/3)^{1/2}[/tex]
Simplifying further:
[tex]768 = a \times (256)^{1/2}[/tex]
Taking the square root of 256:
768 = a x 16
Solving for a:
a = 768 / 16 = 48
Therefore,
The formula for the exponential function passing through the points (-2,768) and (2, 3) is:
[tex]y = 48 \times ((3/768)^{1/4})^x[/tex]
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△EFG has coordinates E(–2, –4), F(–8, 0), and G(–5, 3).
What are the coordinates of the vertices of the image after a reflection in the y-axis?
Answer:
E(2,-4), F(8,0), and G(5,3).
Step-by-step explanation:
Reflection in the y-axis means the signs of the x-coordinates should be flipped.
Answer:
Answer A
Step-by-step explanation:
I know that you already have the answer, but I wanted to show you a picture.
The parametric equations of a curve are:
2x= cotθ - cscθ and
4y= 2cscθ - 2cotθ
Find the Cartesian equation ( y = f(x))
The Cartesian equation of the curve is y = 0. This is a horizontal line at y = 0.
To find the Cartesian equation of the curve, we need to eliminate the parameter θ from the parametric equations.
First, let's rearrange the first equation to isolate θ:
2x = cotθ - cscθ
2x + cscθ = cotθ
cscθ - cotθ = -2x
1/(sinθ) - 1/(tanθ) = -2x
1/(sinθ) - (cosθ)/(sinθ) = -2x
(cosθ)/(sinθ) = 1/(sinθ) + 2x
cosθ = 1 + 2x*sinθ
Now, let's rearrange the second equation to isolate θ:
4y = 2cscθ - 2cotθ
2y = cscθ - cotθ
2y + cotθ = cscθ
cotθ - cscθ = -2y
1/(tanθ) - 1/(sinθ) = -2y
(cosθ)/(sinθ) - 1/(sinθ) = -2y
(cosθ)/(sinθ) = 1/(sinθ) - 2y
cosθ = 1 - 2y*sinθ
Now we can set the two equations equal to each other and solve for sinθ:
1 + 2x*sinθ = 1 - 2y*sinθ
4x*sinθ = -4y*sinθ
sinθ = -4y/4x
sinθ = -y/x
Finally, we can use the Pythagorean identity, sin^2θ + cos^2θ = 1, to find the Cartesian equation:
(-y/x)^2 + cos^2θ = 1
y^2/x^2 + cos^2θ = 1
cos^2θ = 1 - y^2/x^2
cosθ = √(1 - y^2/x^2)
Substituting this back into one of the original equations, we get:
1 + 2x*sinθ = 1 - 2y*sinθ
1 + 2x*(-y/x) = 1 - 2y*(-y/x)
1 - 2y^2/x = 1 + 2y^2/x
4y^2/x = 0
y^2 = 0
y = 0
So the Cartesian equation of the curve is y = 0. This is a horizontal line at y = 0.
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What is the answer to this problem
[tex](\stackrel{x_1}{-2}~,~\stackrel{y_1}{20})\qquad (\stackrel{x_2}{-1}~,~\stackrel{y_2}{22}) \\\\\\ \stackrel{slope}{m}\implies \cfrac{\stackrel{\textit{\large rise}} {\stackrel{y_2}{22}-\stackrel{y1}{20}}}{\underset{\textit{\large run}} {\underset{x_2}{-1}-\underset{x_1}{(-2)}}} \implies \cfrac{2}{-1 +2} \implies \cfrac{ 2 }{ 1 } \implies 2[/tex]
[tex]\begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{20}=\stackrel{m}{ 2}(x-\stackrel{x_1}{(-2)}) \implies y -20 = 2 ( x +2) \\\\\\ y-2=2x+4\implies {\Large \begin{array}{llll} \end{array}} y=2x+6\impliedby \begin{array}{|c|ll} \cline{1-1} slope-intercept~form\\ \cline{1-1} \\ y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}} \\\\ \cline{1-1} \end{array}[/tex]
mplify. Write "undefined" for expr [[-2,-2,4],[-6,-2,5],[-5,-1,5]]+[[5,2,2],[2,-4,-2],[4,5,-5]]
The simplified expression is [[3,0,6], [-4,-6,3], [-1,4,0]].
The given expression is [[-2,-2,4],[-6,-2,5],[-5,-1,5]] + [[5,2,2],[2,-4,-2],[4,5,-5]]. To simplify it, add the corresponding elements of each matrix:
[[-2,-2,4] + [5,2,2] = [3,0,6],
[-6,-2,5] + [2,-4,-2] = [-4,-6,3],
[-5,-1,5] + [4,5,-5] = [-1,4,0]]
Therefore, the simplified expression is [[3,0,6], [-4,-6,3], [-1,4,0]].
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Write the transformed equation for f(x)-5, calling it h(x)
pls solve right away need desperately 20 point question
Transformed equation for f(x)-5 is the function h(x)=2x-4.
what is functionA functional equation in mathematics is, broadly speaking, an equation that has one or more functions as variable. A functional equation, however, is frequently used in a more narrow sense, where it refers to an equation that connects many values of the same function.
What is transformationAn equation that transforms into another equation and has roots that are the opposite of those in the given equation is said to be a transformation. To grasp the transformation equation, this transformation process must be made easy.
Given:f(x)=2x+1
Transforming the function f(x)-5, we get
h(x)=2x+1-5
h(x)=2x-4
h(x) is a function which is made by shifting f(x) 5 units downward.
Hence, transformed equation for f(x)-5 is h(x)=2x-4.
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An urn contains 7 orange marbles and 8 blue marbles. A marble is drawn and dropped back in the urn. The marble was orange if another marble is drawn what is the probability that it will be orange
7 / 15 is the probability that it will be orange. A marble drawing is a separate action. In other words, the results of drawing a marble will not be influenced by each other.
We must ascertain the sample space, the number of occurrences in the sample space, and the number of successful outcomes in order to calculate the necessary probability. The colour determines every consequence that can occur when drawing a marble. The total number of marbles is 15, including 7 orange and 8 blue. Hence, there are 7+5=15 elements in the sample space.
As we are interested in drawing an orange marble and returning the orange marble to the urn after each drawing, the number of favourable events, in this case, is 7. Due to their independence, past drawings won't have an impact on the most recent ones. The likelihood of an event P(A) = total outcomes / favourable outcomes can be used to define A as the ratio of the number of favourable outcomes to the number of total outcomes in the sample space.
Hence, the following is true for the event P(A₀)= total outcomes / favorable outcomes 7 / 15
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please help me man..
The solution to the system of equations is [tex]x = -3/4 $ and $ y = -3^{1/2}.[/tex] The solution has been obtained by using substitution method.
What is substitution method?
The substitution approach is one approach of solving equation problems. To use the substitution method, obtain an expression for one variable in terms of the second variable using one equation. Replace that variable with that expression in the second equation after that.
We are given system of equations as:
y = -2x - 5
y = 2x - 2
Now, by using the substitution method, we get
⇒-2x - 5 = 2x - 2
⇒-4x = 3
⇒x = -3 / 4
On substituting the value of x in y = 2x - 2, we get
⇒y = 2(-3/4) - 2
⇒y = (-3/2) - 2
⇒y = -7/2
Hence, the solution to the system of equations is[tex]x = -3/4 $ and $ y = -3^{1/2}.[/tex]
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A car factory made 24 cars with a sunroof and 18 cars without a sunroof. What is the ratio of the number of cars with a sunroof to the total number of cars?
Answer:
4:7
Step-by-step explanation:
We know
A car factory made 24 cars with a sunroof and 18 cars without a sunroof.
What is the ratio of the number of cars with a sunroof to the total number of cars?
We find the total number of cars by taking
24 + 18 = 42 cars
The ratio of the number of cars with a sunroof to the total number of cars is
24:42
Simplify by 6, we get the ratio
4:7
A city has a population of 1.5 million people. If the monthly incomes of these inhabitants follow a normal distribution with a mean of £2,075 and a standard deviation of £162, how many people from this city will have a monthly income between £2,000 and £2,300?
a. Between 260,000 and 270,000 people
b. Between 620,000 and 630,000 people
c. None of the above
d. Exactly half of the population
e. Between 890,000 and 900,000 people
The correct answer is (e) Between 890,000 and 900,000 people.
To find out how many people from this city will have a monthly income between £2,000 and £2,300, we need to use the z-score formula:
z = (x - μ) / σ
where x is the value we are interested in, μ is the mean, and σ is the standard deviation.
First, we'll find the z-score for £2,000:
z = (2000 - 2075) / 162 = -0.46
Next, we'll find the z-score for £2,300:
z = (2300 - 2075) / 162 = 1.39
Using a z-table, we can find the corresponding probabilities for these z-scores. The probability for a z-score of -0.46 is 0.3228, and the probability for a z-score of 1.39 is 0.9177.
To find the probability of having a monthly income between £2,000 and £2,300, we need to subtract the smaller probability from the larger probability:
0.9177 - 0.3228 = 0.5949
This means that approximately 59.49% of the population will have a monthly income between £2,000 and £2,300. To find out how many people this represents, we'll multiply the probability by the total population:
0.5949 * 1,500,000 = 892,350
Therefore, the answer is (e) Between 890,000 and 900,000 people.
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