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pav-90 [236]
3 years ago
15

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

5 0
3 years ago
7^2*3.14*a=1077.02<br> 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.

5 0
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.

Step 1. Replace f(x) with y.

y = x^3-7x^2+8x+16

Step 2. To find the roots of the equation, replace <em>y</em> with 0 and solve.

0 = x^3-7x^2+8x+16

Step 3. Factor the left side of the equation.

(x-4)^2 (x+1)=0

Step 4. Set x-4 equal to 0 and solve for <em>x</em>.

x-4=0

Step 5. Set x+1 equal to 0 and solve for <em>x</em>.

x=-1

The solution is the result of x-4=0 and x+1=0.

x=4,-1

5 0
3 years ago
A real estate agent receives 2.5% commission on the sale of each house. How much commission will the agent earn on the sale of a
Xelga [282]
The answer to this is 5,474
8 0
3 years ago
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