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3 years ago

△ABC is smailar to △PQR

1 answer:

7 0

All triangles always add to 180 degrees.
So, 180 - (35 + 50) = 95 {Angles in a triangle add to 180}

Therefore, angle R is 95 degrees.

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The point (4,7) is on the graph of y=x^2+c. what is the value of c?

slamgirl [31]

Point is (4,7)
So y = 7 = 4^2 + c
c = 7 - 16
c = -9

7 0

3 years ago

The measure of an exterior angle of a regular polygon is 2x and the measure of an interior angle is 4x Find the measure of one i

kolbaska11 [484]

Answer:

Part a) The measure of an exterior angle is 60°

Part b) The measure of an interior angle is 120°

Step-by-step explanation:

step 1

Find the value of x

we know that

A regular polygon has equal sides and equal interior angles

The sum of an interior angle plus an exterior angle must be equal to 180 degrees (supplementary angles)

$2x+4x=180$

solve for x

$6x=180$

$x=30$

step 2

Find the measure of an exterior angle

substitute the value of x

$2x=2(30)=60\°$

step 3

Find the measure of an interior angle

substitute the value of x

$4x=4(30)=120\°$

In this problem the regular polygon is a hexagon

6 0

2 years ago

Circle YES or NO The terms -5x and 5x are like terms. PLEASE I NEED IT REALLY QUICK

Musya8 [376]

Answer:

YES

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

What is the answer to 168÷54

mylen [45]

3 1/9 or 3.11 because you get a remainder of 1.

6 0

2 years ago

Read 2 more answers

Simply<br> (2k-9)^2+(k+2)^2=(2k+1)^2+(k-8)^2

vova2212 [387]

The square of a binomial expands as follows:

$(a+b)^2=a^2+2ab+b^2$

Expanding all the binomials, we have

$4k^2-36k+81+k^2+4k+4=4k^2+4k+1+k^2-16k+64$

Sum like terms:

$5k^2-32k+85=5k^2-12k+65$

Simplify terms appearing on both sides:

$-32k+85=-12k+65$

Move all terms involving k to the left and all numbers to the right:

$-20k=-20$

Divide both sides by -20:

$k=1$

6 0

3 years ago