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aleksandrvk [35]

4 years ago

14

Scott bought three bags of candy with 75 pieces in each one. He plans to divide all the candy evenly among seven friends. How ma

ny pieces of candy will scott have left?

1 answer:

Katyanochek1 [597]4 years ago

5 0

The answer will be 75 divided by 7.
I know this because if Scott wants to give the same amount of candy to seven friends, he will have to divide the total amount of candy by the number of friends.
75/7 is 10 r 5. (We can solve this in our head because we know 7x10 is 70 and 70+5 is 75.)
The remainder is the amount he will have left.
R=5
Scott will have 5 pieces left.
Hope I helped! ;)

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h: It's the height

According to the data we have:

$length = 5 \frac {1} {8} = \frac {8 * 5 + 1} {8} = \frac {41} {8}$

$width = 7 \frac {1} {2} = \frac {2 * 7 + 1} {2} = \frac {15} {2}$

Then:

$A_ {b} = \frac {41} {8} * \frac {15} {2} = \frac {615} {16}$

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drek231 [11]

Your answer to the first one is incorrect.

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P = 2(l + w)

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P = 2(l + w)

P = 2(2 + 1)

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For the 2nd one, your answer is also incorrect.

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Not sure what the third one is asking.

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Katrina buys a 42-ft roll of fencing to make a rectangular play area for her dogs.

vekshin1

Answer:

(a) $l = -w + 21$

(b) Domain: $0$ <em>(See attachment for graph)</em>

(c) $f(w) = -w + 21$

Step-by-step explanation:

Given

$2(l + w) = 42$

$l = length$

$w = width$

Solving (a): A function; l in terms of w

All we need to do is make l the subject in $2(l + w) = 42$

Divide through by 2

$l + w = 21$

Subtract w from both sides

$l + w - w = 21 - w$

$l = 21 - w$

Reorder

$l = -w + 21$

Solving (b): The graph

In (a), we have:

$l = -w + 21$

Since l and w are the dimensions of the fence, they can't be less than 1

So, the domain of the function can be $0$

--------------------------------------------------------------------------------------------------

To check this

When $w = 1$

$l = -1 + 21$

$l = 20$

$(w,l) = (1,20)$

When $w = 20$

$l = -20 + 21$

$l = 1$

$(w,l)= (20,1)$

--------------------------------------------------------------------------------------------------

<em>See attachment for graph</em>

<em></em>

Solving (c): Write l as a function $f(w)$

In (a), we have:

$l = -w + 21$

Writing l as a function, we have:

$l = f(w)$

Substitute $f(w)$ for l in $l = -w + 21$

$l = -w + 21$ becomes

$f(w) = -w + 21$

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