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mojhsa [17]
3 years ago
9

HOW DO I FIND QR PLEASE HELP

Mathematics
1 answer:
Paul [167]3 years ago
8 0

Solution: For finding QR we need to apply Pythagoras Theorem

What is Pythagoras Theorem ?

ans : Pythagoras Theorem is the sum of square of two sides which is equal to the third side or the hypotenuse. This formula is valid oy incase of Right-Angled Traingle because one of three angles here is 90°

According to this law let's apply it in the diagram shown here.

  • (Hypotenuse)² = (Adjacent)² + (Opposite)²

  • (PR)² = (QR)² + (PQ)²

  • (5x - 2)² = (QR)² + (3x - 1)²

  • (QR)² = (5x - 2)² - (3x - 1)²

After factorising both of them we get

  • (QR)² = 25x² - 20x + 4 - (9x² - 6x + 1)

  • (QR)² = 25x² - 20x + 4 - 9x² + 6x - 1

  • (QR)² = 16x² - 14x + 3

  • QR = √(16x² - 14x + 3)

So, QR is √(16x² - 14x + 3)

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Harlamova29_29 [7]

Answer:

-4

Step-by-step explanation:

Assuming that the following equation is correct, begin by solving the operations within parentheses and absolute value expressions.

|3 - 8| - (\frac{12}{3+1} )^2

|-5| - (\frac{12}{4} )^2

The absolute value of -5 is 5; -5 is five units away from 0. 12/4 is equal to 3.

5 - 3^2

5 - 9 = -4

The simplified expression is equal to -4.

4 0
3 years ago
Read 2 more answers
How would i do number 2?
vekshin1

Answer:

m=2

Step-by-step explanation:

When you put a number into the inverse of a function (f^-1) you get the original number back.

Ex: f^-1(11) = (11-3)/2 = 4

f(4) = 2×4+3 = 11

So, f(-5)=-2

So, when x is -5,

f(x) = -2

f(x)=m(-5)+8

-2=m(-5) + 8

m=2

3 0
3 years ago
If you have 2 linear equations and you want to find where they have the same x- and y- value on a graph you look for the
marin [14]

Answer:

Intersection of the two lines.

4 0
2 years ago
What is 4(-8x+5)=-32x26
Ksivusya [100]

Answer:

x = -25.375

Step-by-step explanation:

4(-8x+5) = -32 x 26

-32x + 20 = 832

-32 = 812

x = -25.375

6 0
3 years ago
Review:
alex41 [277]

Answer:

Step-by-step explanation:

Well 6 to the second power is when you multiply 6 x 6 = 36

And ab= -320

7 0
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