MATHEMATICS HIGH SCHOOL

Solve the system using any method:
y = x - 3
y = 7x + 3

Answers

Answer 1
Answer:

Answer:

x=-1, y=-4

Step-by-step explanation:

For this question, you can replace y in one equation with the second one.

This means x-3=7x+3.

From there, you subtract x from each side, giving -3=6x+3.

Subtracting 3from each side makes it -6=6x.

Dividing both sides by 6 leaves x isolated, with a result of x=-1.

You can substitute the value of x into either equation to work out y. I'm using the first one, as it has smaller numbers.

This equation is now y=-1-3, which can be solved for y=-4.

**This content involves simultaneous equations, which you may wish to revise. I'm always happy to help!

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Answers

Srry just needed points

The portion of a student’s ballpoint pen that contains the ink is a cylinder with a diameter of 0.400 cm and a height of 11.5 cm. If the ink lasts 7 weeks, what is the volume of ink that the student uses each week?

Answers

Volume of all of the ink is (0.2^{2})* \pi  * 11,5 = 0.46 cm^{3} . When we divide the volume by 7, we get 0.0657142857 cm^{3} of ink

What is the circumference of a circle with a diameter of 4.8 inches?Multiple choice question.
A)
2.4 in.
B)
4.8 in.
C)
2.4π in.
D)
4.8π in.

Answers

Answer:

D

Step-by-step explanation:

the circumference (C) of a circle is calculated as

C = πd ( d is the diameter )

here d = 4.8 in , then

C = π × 4.8 = 4.8π in

What is the inverse of the function y = 4x + 5?

Answers

The inverse of the function y = 4x + 5 is f^(-1)(x) = (x-5)/(4)

The given function is:

y = 4x  +  5

To find the inverse of the given function y = 4x  +  5, follow the following steps:

Make x the subject of the formula:

y = 4x + 5\n\n4x = y - 5\n\nx = (y)/(4)-(5)/(4)

Replace x by f^(-1)(x) and replace y by x.

The resulting function represents the inverse of the function y = 4x  +  5

f^(-1)(x)=(x)/(4)-(5)/(4)

Which can be further simplified as:

f^(-1)(x) = (x-5)/(4)

The inverse of the function y = 4x + 5 is f^(-1)(x) = (x-5)/(4)

Learn more here: brainly.com/question/12220962

Answer:

y = 1/4 x - 5/4

Step-by-step explanation:

y = 4x + 5

Switch x and y.

x = 4y + 5

Solve for y.

4y = x - 5

y = 1/4 x - 5/4

Need help solving these, if anyone is able to help, then please feel free! Help please ❤

Answers

# 3 is .4 because u multiply .2*.2

6x − 9 x − 5 value x

Answers

Let's simplify step-by-step.6x−9x−5=6x+−9x+−5Combine Like Terms:=6x+−9x+−5=(6x+−9x)+(−5)=−3x+−5Answer:=−3x−5
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