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adoni [48]
2 years ago
8

Rita needs to buy some dog food. At the nearest store, 4 bags of dog food cost $26.8. How much would Rita spend on 8 bags of dog

food?
Mathematics
1 answer:
Step2247 [10]2 years ago
7 0

Answer:

$53.6

Step-by-step explanation:

\frac{4}{26.8} =\frac{8}{x} \\\\4x=214.4\\x=53.6

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If f(x) = x-9, then f '(x) =​
erica [24]

Answer:

1

Step-by-step explanation:

If you are just looking for the derivative, then all you need to use the power rule for this. Technically the x in (x-9) has a power to the 1, so really x^1-9. To use power rule, you bring down the exponent, in this case, 1, and then minus 1 from what the exponent was.

1x^(1-1) = 1x^0. The derivative of any constant is 0, so don't even worry about the -9. We know that anything raised to the zero is just 1, so in this case your answer is 1.

Hope this helps :)

4 0
2 years ago
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2 years ago
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Alecsey [184]

Answer:

I think 5 gallon painting

4 0
2 years ago
F(x) = -322 Find f(-2)​
serg [7]

Answer:

f ( - 2 ) =  - 12

Step-by-step explanation:

f ( - 2 ) = - 3 ( -2 )^2

then you do the exponent first so

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now you multpily the - 3 and 4

you get - 12

8 0
2 years ago
In expansion of (2x+1)(x^2+px+4), the coefficient of x is twice the coefficient of x^2.
Brilliant_brown [7]

You're probably supposed to find the value of p and not x, which is impossible to do.

Expanding gives

(2x+1)(x^2+px+4)=2x^3+(1+2p)x^2+(8+p)x+4

We're told that

8+p=2(1+2p)

which we can use to solve for p:

8+p=2+4p

6=3p

\boxed{p=2}

7 0
3 years ago
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