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Mama L [17]
3 years ago
5

Please help me!! THANK YOU

Mathematics
1 answer:
enyata [817]3 years ago
4 0

Answer:

is that 12.75 or 2.75

Step-by-step explanation:

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PLEASE HELP ME -45= -2.5g
Rainbow [258]

Answer:

g=18

Step-by-step explanation:

Isolate the variables by dividing each side by -2.5.

5 0
3 years ago
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The length of a rectangle is eight more than twice its width. The perimeter is 96 feet. Find the dimensions of the rectangle
Debora [2.8K]

Answer:

The width  of the rectangle is 14'8",  and the length is 33'4"

Step-by-step explanation:

We're given two pieces of information:

The length is eight more than twice the width:

l = 2w + 4

The perimeter is 96 feet:

p = 96

We also need to apply one more piece of information that is not provided here, and that is the relationship between the perimeter of a rectangle, and it's length and width:

p = 2l + 2w

We can solve for w by plugging the other two values into the last:

p = 2w + 2l\\96 = 2w + 2(2w + 4)\\96 = 2w + 4w + 8\\88 = 6w\\3w = 44\\w = \frac{44}{3}\\w = 14\frac{2}{3}

Now we can find the length by plugging w into the first equation:

l = 2w + 4\\l = 2(14\frac{2}{3}) + 4\\l = 29\frac{1}{3} + 4\\l = 33\frac{1}{3}

One third of  a foot is four inches, so the width is 14'8" and the length is 33'4"

To make sure our answer is correct, we should plug those numbers back into the area equation and see if we're right:

p = 2l + 2w\\p = 2(33\frac{1}{3}) + 2(14\frac{2}{3})\\p = 66\frac{2}{3} + 29\frac{1}{3}\\p = 96

So we know our answer's correct

8 0
2 years ago
If there are 19 red marbles for every black marble in a bag of 120 marbles, how many red marbles are in the bag?
lesya692 [45]

Answer:6

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
14 maids share five granola bars equally. Draw to show how much each person gets. Share the amounts that one person gets. Write
Alecsey [184]


first you divide14 and 5 and you get 2.8 then you turn 2.8 into 2 8/10

2 8/10 is your answer  

4 0
3 years ago
Surface area of cylinders
Nitella [24]

Answer:

SA = 402.14 square inches

Step-by-step explanation:

Imagine you unroll the cylinder. You will be left with a rectangle and two "lids" (disks).

The rectangular area will be of dimension:

Ar = (height)*(circumference of the disk)

Ar = (12 in) * (8 in) *pi = 301.60 in^2

The area of one disk will be

Ad = pi*(radius^2) = pi*(4^2 in^2) = 50.27 in^2

So the total surface area will be

SA = Ar + 2* Ad = 402.14 in^2 (square inches)

6 0
3 years ago
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