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Vesna [10]
3 years ago
15

Please help with #21 The length of QP = The length of PR = The length of QR =

Mathematics
1 answer:
Marat540 [252]3 years ago
8 0
Hello!

The length of QP = 18 feet
The length of PR = 18 feet
The length of QR = 24 feet
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Look at the photo pick A B C D either one explanation not needed thank you! <3
hjlf

Answer:

A

Step-by-step explanation:

It's A

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3 years ago
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7 + 8(3² -2)<br> PLEASE SHOW ALL THE STEPS!
IrinaK [193]

Answer

105

Step-by-step explanation:

first bring 3 to the second power and get 9

then you have 7+8(9-2)

then add 7+8 and get 15

then you have 15(9-2)

then subtract 9-2 and get 7

then you have 15(7)

then times them and get 105



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Step-by-step explanation:

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3 years ago
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Find the length of the segment AB if points A and B are the intersection points of the parabolas with equations y=−x^2+9 and y=2
11Alexandr11 [23.1K]

Answer:

The length of the segment AB is √48

Step-by-step explanation:

Given the two equations, the idea is to find the solution to the system

y = x² + 9

y = 2x² - 3

you can use the equality method to find the "x" and "y" of the solution.

x² + 9 = 2x² - 3 ⇒ x² - 2x² = -3 - 9 ⇒ -x² = -12 ⇒ x² = 12 ⇒ x = ±√12.

With this value we return to the original equations and replace it to find "y" values.

y = (±√12)² + 9 ⇒ y = 21

The solutions to the system are (-√12, 21) and (√12, 21). Now you need to find the distance between this points.

d= √[(x2-x1)² + (y2-y1)²] ⇒ d = √48.

The length of the segment AB is √48.

6 0
3 years ago
Thank you for your help :) really appreciate! Here’s the new one
drek231 [11]

Answer:

8 units

Step-by-step explanation:

The two squares have equal areas.

For each square:

area = 32 units^2

For a square:

area = side^2

side^2 = 32

side = sqrt(32)

For the two squares, the length of the side is sqrt(32).

The sides of the squares are the legs of the right triangle.

a^2 + b^2 = c^2

(sqrt(32))^2 + (sqrt(32))^2 = x^2

32 + 32 = x^2

x^2 = 64

x = 8

Answer: 8 units

4 0
3 years ago
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