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Aneli [31]
4 years ago
7

SOMEONE PLEASE HELP me a-e, step by step instructions I do not understand

Mathematics
1 answer:
VladimirAG [237]4 years ago
4 0
Since length • width = area you need to put the expression with “x” in (parenthesis) and put the number without a variable outside the parenthesis ex: d. would be 5(8-3x) because you would do what’s in the parenthesis first. In this case length is in the parentheses you would have 5(your answer) which means 5•your answer
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Simplify each expression. 7(2y+1) + 3y
mars1129 [50]
7(2y+1)+3y
14y + 7 + 3y
17y + 7
4 0
3 years ago
A dilation is an enlargement if the scale factor is _____ between 0 and 1. greater than 1. less than 0. equal to 1.
boyakko [2]

Dilation is one of the several means by which we can transform a graph. A function is dilated when is stretched away from an axis or compressed towards an axis. So this means there are 2 types of dilation: a) Stretch (Enlargement) and b) Compression.

Depending on the direction of Dilation, we have Horizontal Dilation and Vertical Dilation.

For a function y = f(x), horizontal dilation is achieved when x is replaced by \frac{x}{A} and vertical dilation is achieved when y is replaced by \frac{y}{A} where A is the scale factor.

In each of these cases, the function will be stretched if |A| > 1 and will be compressed if |A| < 1.

Therefore, the answer to the given question is:

A dilation is an enlargement if the scale factor is greater than 1.

4 0
3 years ago
X starts at 15 and subtract 3. Y starts at 14 and subtract 3
Andre45 [30]

Answer:

x: 12 9 6 3

y: 11 8 5 2

Step-by-step explanation:

Every box is the previous number minus 3. For x, they say to start with 15 and subtract 3, so the first box is 15-3. The second box is the previous box, 12, minus 3 and so on. Y is done the same way. Hope this is helpful :)

4 0
3 years ago
Find the surface area of the square pyramid below if the length of the sides of the base are 10 cm, and the slant height is 15 c
Damm [24]

The surface area of the square pyramid if the length of the sides of the base are 10 cm, and the slant height is 15 cm is 416.2 cm²

<h3>Surface area</h3>

Surface area of the square pyramid

= a² + 2a√a²/4 + h²

where,

  • a = sides of base = 10 cm
  • h = slant height = 15 cm

Surface area of the square pyramid

= a² + 2a√a²/4 + h²

= 10² + 2(10)√10²/4 + 15²

= 100 + 20√100/4 + 225

= 100 + 20√25 + 225

= 100 + 20√250

= 100 + 20(15.81)

= 100 + 316.2

= 416.2 cm²

Learn more about surface area:

brainly.com/question/16519513

#SPJ1

4 0
2 years ago
I need help with the following question, whichever one is right will get brainliest!
Schach [20]

Given: m∠A + m∠B = 90° (Definition of Complementary Angles).

Given: m∠B = (5x + 8)°

A) m∠A = 180° + (5x + 8) is your answer choice:

Why it isn't the others:

B) m∠A = 90° - (5x + 8)

You are solving for complementary angles (90° in total when combined), so you subtract the measurement for B (5x + 8) to get A.

C) m∠A = 180° - 2(5x + 8)°

You double the complementary angle to solve for the supplementary. Essentially, just divide this answer by two to get the complementary angles.

D) m∠A = 82 - 5x

I was confused by this one, but essentially they just did one step of the isolating the variable, which was subtracting 8 from both sides. They did not finish isolating the variable however.

8 0
3 years ago
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