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kondor19780726 [428]
3 years ago
11

PLEASE HELP ME this is a 7th grade math test

Mathematics
1 answer:
konstantin123 [22]3 years ago
3 0

Answer:

is there a picture or something

Step-by-step explanation:

or like some equation? Im in 7th grade too but i need a picture in order to help you So when u get a picture i edit my anwser and help you

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Pls help fast !! Thanks
Pavlova-9 [17]

Answer:

A. 8fg + 3h

Step-by-step explanation:

4f × 2g + 3h \\  \\  = 4 \times 2 \times f \times g + 3h \\  \\  = 8fg + 3h

8 0
3 years ago
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What is the square root of 64? I don't understand.<br> Will give brainliest
inessss [21]
Square root is the number that when multiplied when itself give the number you are looking for if that makes any sense.
8 is the square root of 64 because 8x8 = 64
7 0
3 years ago
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find two positive real numbers such that they sum to 108 and the product of the first times the square of the second is a maximu
topjm [15]

The two positive numbers are 36 and 72 which gives a sum equal to 108 and the product of 36 and the square of 72 is a maximum.

Any integer greater than zero is considered a positive number. A positive number can either be written as a number or with the "+" symbol in front of it.

Let us consider the two positive real numbers as x and y. Then, their sum is written as,

x+y=108

Then, y=108-x

And the product is written as,

P=xy²

Substitute value of y in the above equation, we get,

\begin{aligned}P&=x(108-x)^2\\&=x(11664-216x+x^2)\\&=11664x-216x^2+x^3\\&=x^3-216x^2+11664x\end{aligned}

Now, differentiate P with respect to x, and we get,

\begin{aligned}\frac{dP}{dx}&=3x^2-432x+11664\\&=x^2-144x+3888\end{aligned}

Solving the above equation to zero, we get,

\begin{aligned}x^2-144x+3888&=0\\x^2-36x-108x+3888&=0\\x(x-36)-108(x-36)&=0\\(x-108)(x-36)&=0\\x&=\text{108 or 36}\end{aligned}

Substitute values of x in y=108-x, to get values of y.

If we substitute x=108, we get the y value as zero which doesn't give the required solution.

But, if we substitute x=36, we get,

\begin{aligned}y&=108-36\\y&=72\end{aligned}

Thus, the two positive numbers are 36 and 72.

To know more about positive numbers:

brainly.com/question/1635103

#SPJ4

4 0
1 year ago
Which of the following cannot be determined from the boxplots shown?
Delvig [45]

Answer:

Please mark me brainliest!

Step-by-step explanation:

Set A

3 0
2 years ago
Simplify.<br> 4(w-2) - 6
Alex Ar [27]
Answer: 4w-14

Step By step explanation: 4(w-2)-6= 4w-8-6= 4w-14
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3 years ago
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