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3 years ago

Solve the system of equations by graphing. X+ y = 7 2x - 4y=8

Mathematics

1 answer:

Sidana [21]3 years ago

6 0

Answer:

(6,1)

Step-by-step explanation:

after switching the equations from y=mx+b, graph both equations. you will see that the point of intersection is (6,1)

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Which of the following is an example of normal data?

saveliy_v [14]

Answer:

1. heights

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3 . measurement error

4. IQ scores

Step-by-step explanation:

hope this will help you

5 0

3 years ago

Read 2 more answers

Solve 5t= 150 by using an inverse operation

Taya2010 [7]

Answer:

T=30

Step-by-step explanation:

1) inverse mean opposite, so they want us to solve this equation using the opposite operation

So we can see here that 5 is being multiplied with t, so we should perform the opposite operation, division.

5t=150

(divide both sides by 5)

T=30

Hope this helps

5 0

3 years ago

Can you guys help me on this math problem

Margarita [4]

I think 47 but i might b wrong lol

5 0

2 years ago

Find the volume of the sphere.

den301095 [7]

Answer:

volume = 682.67π units³ or 2143.58 units³

Step-by-step explanation:

volume = 4/3πr³

volume = 4/3π8³ = 4/3π(512)

volume = 682.67π

3 0

2 years ago

Solve the quadratic equation by completing the square.<br> x²–2x-12=0

inn [45]

Answer:

$(x-1)^2-13=0$

$x = \sqrt{13}+1$

Step-by-step explanation:

Completing the square is a method of rewriting a quadratic equation in the standard form such that it is in vertex form. The first step is to group the linear and quadratic terms, then factor out the coefficient of the quadratic term. After doing so, complete the square, add a value such that the linear and quadratic terms form a perfect square trinomial. Do not forget to balance the equation. The final step is to simplify.

$x^2-2x-12=0$