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Aleksandr [31]
3 years ago
5

How can you solve problems involving percents

Mathematics
1 answer:
Elina [12.6K]3 years ago
4 0

All you need to remember is that the symbol ' % ' means ' /100 ',
and your life will be easy.

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You need to cover the playground of a child development center with mulch. The playground is 125 feet long and 60 feet wide. You
jenyasd209 [6]
Change 125 and 60 into inches 
1500 and 720
1500*720=1,080,000 (area)
multiply by 6
1,080,000*6=6,480,000
divide by 12 to make it into feet
6,480,000/12=540,000
divide by 3 to make it into yards
you need 180000 cubic feet of mulch
3 0
3 years ago
Give two examples of a term that could combine with -5xy
kherson [118]

Answer:

-20x       87y

Step-by-step explanation:

6 0
3 years ago
A rectangle’s width is one-fourth of its length. Its area is 9 square units. The equation l(l) = 9 can be used to find l, the le
Natalka [10]

Answer:

6 units

Step-by-step explanation:

The formula for the area of a rectangle = Length × Width

A rectangle’s width is one-fourth of its length.

W = 1/4 × L

W = L/4

Cross Multiply

L = 4W

A = 9 square units

Hence

9 = L × W

We substitute 4W for L

9 = 4W × W

9 = 4W²

We square root both side

√9 = √4W²

3 = 2W

W = 3/2

W = 1 1/2 unit or 1.5 units

Solving for L = Length

9 = L × W

9 = L × 1.5

L = 9/1.5

L = 6 units

Therefore, the Length of the rectangle = 6 units

3 0
3 years ago
If f(x)=|x|, sketch f'(x) for -2
Luden [163]

Answer:

17

Step-by-step explanation:

4 0
3 years ago
3x+4y=2 4x-4y=12 by using elimination
Sidana [21]
(+3x+4y=2)
(+4x-4y=12)
-----------------
7x = 14
-----------------
7
X=2

3(2)+4y=2
6+4y=2
4y=-4
Y=-1.
Or you can plug x into the other equation.

4(2)-4y=12
8-4y=12
-4y=4
Y=-1.

8 0
4 years ago
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