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mixas84 [53]
3 years ago
7

There are 12 feet of wrapping paper on each roll. Jill needs 84 feet of wrapping paper. Which equation can Jill use to find the

number of rolls, r , she needs? need equation
Mathematics
2 answers:
balu736 [363]3 years ago
4 0
Let
r----------------- > <span>number of rolls
x-----------------> </span><span>feet of wrapping paper needs

we know that 
1 r--------------------- > </span><span>12 feet of wrapping paper
therefore
r=(1/12)*x------------- > equation </span>required

for x=<span>84 feet of wrapping paper
r=(1/12)*84=7 rolls</span>
krek1111 [17]3 years ago
3 0

Answer:

The correct answer is <u>All of these answers are correct.</u>

(Think Through Math Only)

Step-by-step explanation:

I don't think I need to explain why.

These are very simple.

<u>12r=84 ✔</u>

<u>84/r=12 ✔</u>

<u>84/12=r ✔</u>

<u>All of these answers are correct ✔</u>


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frosja888 [35]

Answer:

20-3=17

5-2=3

17/3 is... 5 and 2/3

Step-by-step explanation:

3 0
3 years ago
You are designing a rectangular garden. the garden will be enclosed by fencing on three sides and by a house on the fourth side.
RUDIKE [14]
Suppose the dimensions of the rectangle is x by y and let the side enclosed by a house be one of the sides measuring x, then the sides that is to be enclosed are two sides measuring y and one side measuring x.

Thus, the length of fencing needed is given by

P = x + 2y

The area of the rectangle is given by xy,

i.e.

xy = 288  \\  \\  \\  \\ \Rightarrow y= \frac{288}{x}

Substituting for y into the equation for the length of fencing needed, we have

P=x+2\left( \frac{288}{x} \right)=x+ \frac{576}{x}

For the amount of fencing to be minimum, then

\frac{dP}{dx} =0 \\  \\ \Rightarrow1- \frac{576}{x^2} =0 \\  \\ \Rightarrow \frac{576}{x^2} =1 \\  \\ \Rightarrow x^2=576 \\  \\ \Rightarrow x=\sqrt{576}=24

Now, recall that

y= \frac{288}{x} = \frac{288}{24} =12

Thus, the length of fencing needed is given by

P = x + 2y = 24 + 2(12) = 24 + 24 = 48.

Therefore, 48 feets of fencing is needed to enclose the garden.
8 0
3 years ago
Which of the following statements about points are false?
vagabundo [1.1K]

Answer:

their sizes vary

Step-by-step explanation:

their sizes vary

4 0
3 years ago
Read 2 more answers
I need help with my math
Tresset [83]
What is the question 
3 0
3 years ago
Subtract.<br> (4x + 7) - (x+1)<br> A. 3x + 8<br> B. 3x + 6<br> C. 4x + 8<br> O D. 4x + 6<br><br> Lmk
Studentka2010 [4]

Answer:

4x + 7 - ( x + 1)

Remove the bracket

We get

4x + 7 - x - 1

= 3x + 6

That's option B

Hope this helps.

8 0
3 years ago
Read 2 more answers
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