MATHEMATICS HIGH SCHOOL

A 24 inch x 30 inch poster is made from a picture that is 4 inch x 5 inch. This is an example of A: Expansion
B: Contraction
C: Translation
D: Diagram

Answers

Answer 1
Answer:

Answer: A: Expansion

Step-by-step explanation:

Given: A 24 inch x 30 inch poster is made from a picture that is 4 inch x 5 inch.

Thus, the dimension of the image = 24 inch x 30 inch

The dimension of pre-image  = 4 inch x 5 inch.

We know that the scale factor of dilation is given by :-

k=\frac{\text{side length of image}}{\text{side length of corresponding side in pre-image}}\n\n\Rightarrow\ k=(24)/(4)=(30)/(5)=6

Since, k>1, therefore the given dilation is an example of expansion because the dimension of the image is greater than the dimension of pre-image.

Answer 2
Answer: It's an expansion because they are expanding the original photograph.

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What’s 34 percent of 240? A. 81.6 B. 81 C. 90.6 D. 80

Answers

34 percent of 240 is 81.6
Hello!

To convert a percent to a decimal you divide by 100.

34%/100=0.34

Now we multiply 0.34 by 240.

0.34·240=81.6

Therefore, our answer is A. 81.6

I hope this helps!

What is the value of x?

Answers

Answer:

2x + 90 + X + 180 = 360

3x + 270 = 360

3x= 90

x = 30

Please I need help asap.

Answers

QR is the median of the trapezoid, so its length is the average of the top and bottom bases. Write that. Say (length of QR)=1/2 of (length of the top + length of the bottom). That gives you a nice simple equation that you can easily solve for 'x'.

The product of (4z2 + 7z – 8) and (–z + 3) is –4z3 + xz2 + yz – 24. What is the value of x? What is the value of y?

Answers

Answer:

Hence, the value of x is 5 and y=29

Step-by-step explanation:

We are asked to find the product of 4z^2+7z-8 and (-z+3) and equate it to the equation:

-4z^3 + xz^2 + yz-24 and find the values of x and y in the second equation.

The product of  4z^2+7z-8 and (-z+3) is:

(4z^2+7z-8)*(-z+3)= (4z^2+7z-8)*(-z)+3* (4z^2+7z-8)\n=-4z^3-7z^2+8z+12z^2+21z-24=-4z^3+5z^2+29z-24

  Hence on comparing with -4z^3 + xz^2 + yz-24  we have:

-4z^3 + xz^2 + yz-24=-4z^3+5z^2+29z-24

so we get that x=5, y=29
x = 5 
y = 29

When you multiply the trinomial and the binomial, you get
-4z^3 + 5z^2 + 29z - 24 . The coefficient of the z^2 term is 5 and the coefficient of the z term is 29. 

(5,?) is on the line below. Find the other half of the coordinate.
y = 2/3x + 7

Answers

We need to plug 5 in place of x into the equation of the line and find the y-value.

y = (2/3)x + 7

y = (2/3)5 + 7

y = 10/3 + 7

y = 10/3 + 21/3

y = 31/3

y = 10 1/3

The point is (5, 10 1/3) OR (5, 31/3).
(x,y) = (5, ?), so x = 5. Substitute 5 into the function for x to find the value of y when x = 5. y = 2/3 (5) + 7 = (2 x 5) / 3 + 7 = 10/3 + 7 = 10/3 + 21/3 = 31/3, which equals 10 1/3 or 10.3 repeating.

Which function has a domain of all real numbersplease answer accurately I need this to pass my class. thank you.

Answers

Answer:

a.y=-x½+5

Step-by-step explanation:

from the above functions ,the highest degree or power is ½ on a.⅓,¼,⅙ are smaller than ½
the answer is a.) y = -x^1/2 + 5
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