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egoroff_w [7]
3 years ago
7

A school had 225 students enrolled last year. This year, 260 students are enrolled. Find the percent of change to the

Mathematics
1 answer:
Katarina [22]3 years ago
8 0

Answer:

15.5%

Step-by-step explanation:

No of students that had enrolled last year = 225

This year, 260 students are enrolled.

We need to find the percent of change in the number of students. It can be calculated as :

P = (change in no of students/initial no of students)×100

\%=\dfrac{260-225}{225}\times 100\\\\=15.5\%

So, the percent change is 15.5%.

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The length of a rectangular football field, including both end zones, is 120 yards. The area of the field is 57,600 square feet.
egoroff_w [7]

Answer:

3a.False,the width is 53.33 yards

3b.true, the Length is 120 yards=360 feet

3c.True, width of the field is 160 feet.

3d. True,rea of the field is 6,400 square yards.

Step-by-step explanation:

Hello , I think I can help you with this

to solve this you must know the equivalence between feet and yard, which is

3 feet = 1 yard

Also, the area of  a rectangle is the product of its length by its width

Area=length *width

Step 1

convert 120 yards into feet using a rule of three

3 feet = 1 yard

x feet= 120 yards

3/1=x/120

x=(120*3)/1

x=360 feet

so

120 yards= 360 feet

Step 2

isolate the width from the area´s equation to find out it.

Area=57600 square feet

length=360 feet

Area=length *width

width=Area/length

Width=57600 square feet/360 feet

Width=160 feet

Step 3

convert 160 feet into yards

1 yard= 3 feet

x yard= 160 feet

1/3=x/160

x=(1*160)/3

x=53.33 yards

width=53.33 yards

the area is (square yards)

Area=120 yards*53.33 yards

Area=6400 square yards

Step 4

Answer the questions.

3a.False,the width is 53.33 yards

3b.true, the Length is 120 yards=360 feet

3c.True, width of the field is 160 feet.

3d. True,rea of the field is 6,400 square yards.

Have a nice day.

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Kelvin has 36 coins, all nickels and quarters. The total value of all these coins is $3.80. How
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Answer: 26 nickels

Step-by-step explanation:

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