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Nitella [24]
2 years ago
8

An amount of money b divided by 20 is $7. What is the amount?

Mathematics
2 answers:
olga2289 [7]2 years ago
4 0
The amount of money, b, is $140.

lesya692 [45]2 years ago
4 0

Answer:

B = 140.

Step-by-step explanation:

The amount of money (b) is 140, to find what number divided by 20 that equals $7.00 we have to multiply 20 times 7, why? multiplying the times divided will give the same answer you´re looking for (20 x 7). Which equals 140, then if you divide 140 by 20 (140÷20). Will equal to 7.

Hope this helps.

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Write a quadratic relation in the form y = ax2 + bx + c with roots 4 and - 3 and
pochemuha

Answer:

y =  2*x^2 - 2*x - 24

Step-by-step explanation:

If we have a quadratic function with roots a and b, we can write the equation for that function as:

y = f(x) = A*(x - a)*(x - b)

Where A is the leading coefficient.

In this case, we know that the roots are: 4 and -3

Then the function will be something like:

f(x) = A*(x - 4)*(x - (-3) )

f(x) = A*(x - 4)*(x + 3)

Now we need to determine the value of A.

We also know that the graph of the function passes through the point (3, -12)

This means that:

f(3) = -12

Then:

-12 = A*(3 - 4)*(3 + 3)

-12 = A*(-1)*(6)

-12 = A*(-6)

-12/-6 = A

2 = A

Then the equation is:

y = f(x) = 2*(x - 4)*(x + 3)

Now we need to write this in standard form, so we just need to expand the equation:

y = f(x) = 2*(x^2 + x*3 - x*4 - 4*3)

y = f(x) = 2*(x^2 - x - 12)

y = f(x) = 2*x^2 - 2*x - 24

Then the relation is:

y =  2*x^2 - 2*x - 24

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Step-by-step explanation:

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