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LenKa [72]
3 years ago
13

Solve the system of equations y=x-4, y=-3x

Mathematics
1 answer:
abruzzese [7]3 years ago
5 0
Y=x-4
x=y+4
y=-3(y+4)
y=-3y-12
4y=-12
y=-3
x=1
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Need help will mark brainiest thank you
Nadusha1986 [10]

a. 1^5 = 1 × 1 × 1 × 1 × 1 = 1

b. 2 × 2 × 2 × 2 × 2 = 2^5 = 32

c. 20^3 = 20 × 20 × 20 = 8.000

d. 7 × 7 × 7 × 7 = 7^4 = 2.401

6 0
2 years ago
What are the missing angle measures in triangle ABC?
Finger [1]

we know that

In the right triangle ABC

∠A+∠B=90 ------> by complementary angles

so

Step 1

Find the measure of angle B

we know that

tan\  B=\frac{opposite\  side\  angle\  B}{adjacent\  side\  angle\  B}

in this problem

opposite\  side\  angle\  B=7in\\ adjacent\  side\  angle\  B=5in

so

tan\  B=\frac{7}{5} \\ \\ B=arc\ tan\frac{7}{5} \\ \\ B=54.5\ degrees

Step 2

Find the measure of angle A

A+B=90\\ A=90-B\\ A=90-54.5\\ A=35.5\ degrees

therefore

the answer is the option

35.5° and 54.5°




5 0
3 years ago
Read 2 more answers
Find the surface area of the ball shown to the right <br><br> d=20
netineya [11]

Answer:

<h3>Surface Area = 1,256 cm</h3>

<u>Solution:</u>

formula: Surface Area of a Sphere: 4π · r²

Surface area = 4π · r²

SA = 4(3.14) (10)²

SA =  (12.56)(100)

SA = 1,256

7 0
2 years ago
Which is the equation for the line that has a slope of 12 and passes through the point (3, 20)?
sasho [114]

Answer:

y=12x-16

Step-by-step explanation:

y-y1=m(x-x1)

y-20=12(x-3)

y=12x-36+20

y=12x-16

4 0
2 years ago
Evaluate 16^1/2 and show work​
LUCKY_DIMON [66]
Here is your answer

{16}^{1/2} = ({4}^{2})^{1/2}\\= {4}^ {2× 1/2}\\= 4

HOPE IT IS USEFUL
4 0
3 years ago
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