Are these two answers right?

Mathematics

1 answer:

anastassius [24]3 years ago

6 0

Answer:

yes they both are right good job

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Find the measures of two complementary angles, ANGLE A AND B, IF m Ð A= 7X+4 and Ð B=4X+9.

skad [1K]

Answer:

x = 7

angle A = 7(7) + 4 = 49 + 4 = 53°

angle B = 4(7) + 9 = 28 + 9 = 37°

Step-by-step explanation:

m ∠A + m ∠B = 90° Complementary angles sum = 90°

7x + 4 + 4x + 9 = 90

11x + 13 = 90

11x = 77

x = 7

angle A = 7(7) + 4 = 49 + 4 = 53°

angle B = 4(7) + 9 = 28 + 9 = 37°

Check = angle A + angle B = 90° checked

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3 years ago

7^2*3.14*a=1077.02 What is a?

eimsori [14]

A =7

7^2*3.14*7 sorry I did the equation wrong at first

3 0

3 years ago

Read 2 more answers

Find the length of the segment with endpoints of (3,2) and (-3,-6).

MakcuM [25]

The formula of the length of the segment AB:
$A(x_A;\ y_A);\ B(x_B;\ y_B)\\\\|AB|=\sqrt{(x_B-x_A)^2+(y_B-y_A)^2}$
We have:
$A(3;\ 2)\to x_A=3;\ y_A=2\\\\B(-3;\ -6)\to x_B=-3;\ y_B=-6$
Substitute:
$|AB|=\sqrt{(-3-3)^2+(-6-2)^2}=\sqrt{(-6)^2+(-8)^2}\\\\=\sqrt{36+64}=\sqrt{100}=10$
Answer: B) 10.

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4 years ago

What are the zeros of the polynomial function f(x)=x3-7x2+8x+16

labwork [276]

Answer: x=4, -1

Step-by-step explanation:

Assuming you meant $x^3-7x^2+8x+16$ , the zeros of the question are x = 4 and -1.