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andrezito [222]
3 years ago
14

Solve for b -11b +7=40what does b equal?I will give you BRAINLIEST

Mathematics
1 answer:
galina1969 [7]3 years ago
3 0

Answer:

b=-3

Step-by-step explanation:

-11b +7=40

first subtract 7 on both sides

-11b+7-7=40-7

-11b=33

now divide both sides by -11

-11b/-11=33/-11

b=-3

ANSWER CHECK

to check the answer substitute the solution for B

-11(-3)+7=40

-11(-3)=33

33+7=40

40=40

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Marlene earned $178 at her summer job. She already had savings of $98.25. She buys a T-shirt for $19.50. How much money does she
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3 years ago
Find the equation of the plane that goes through three points:
frosja888 [35]

The equation of the plane that goes through these points is:

6x + 2y + z = 10.

<h3>How to find the equation of a plane given three points?</h3>

The equation of the plane is found replacing the points into the following equation:

ax + by + c = z.

For point A, we have that:

3b + c = 4.

For point B, we have that:

a + 2b + c = 0.

For point C, we have that:

-a + 6b + c = 4.

Hence the system is:

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From the first equation, we have that:

c = 4 - 3b.

Replacing in the second, we have that:

a + 2b + 4 - 3b = 0

a - b = -4.

Replacing in the third, we have that:

-a + 6b + 4 - 3b = 4.

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a = 3b.

We have that a - b = -4, hence:

3b - b = -4

2b = -4

b = -2.

a = 3b, hence a = -6.

c = 4 - 3b -> c = 10.

Hence the equation is:

ax + by + c = z.

z = -6x - 2y + 10

6x + 2y + z = 10.

More can be learned about the equation of a plane at brainly.com/question/13854649

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Answer:

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Find w when p = 12

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