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cupoosta [38]
3 years ago
7

The perimeter of a rectangular skating rink is 530 feet. If the length is 5 feet more than 3 times the

Mathematics
1 answer:
vladimir2022 [97]3 years ago
8 0

Answer:

length:  200

width:  65

Step-by-step explanation:

length:  3w + 5

width:  w

perimeter = 2L + 2W

530 = 2(3w + 5) + 2w

530 = 6w + 10 + 2w

530 = 8w + 10

520 = 8w

w = 65

length:  3w + 5 = 3(65) + 5 = 200

width:  w = 65

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Is 7/9 a rational number ?
zzz [600]

Answer:

Yes.

Step-by-step explanation:

Rational numbers can be represented as fractions with integers. The denominator must not equal 0.

\frac{7}{9} is already in this form. This means that it's a rational number.

Hope this helps.

8 0
3 years ago
Grandpa schmidt is 75 years old. this is 9 years less than seven times the age of junior schmidt. how old is junior
Ad libitum [116K]
Grandpa's age is 75 years
Seven times the age of junior = age of grandpa + 9 jears = 75 + 9 = 84 years
Hence, the age of junior will be 84 / 7 = 12 years. (Since 84 is seven times his age, you have to devide by seven).
--> Junior is 12 years old.

I hope I've been helpful, MarkV
3 0
3 years ago
Left Witch needs 3.25 gallons of "Toe of Frog" in her potion. If she can get half a gallon for $2.50, how much will she spend
Sladkaya [172]

Answer:

$16.25

Step-by-step explanation:

Half a gallon for $2.50 is the same as a quarter a gallon for $1.25.

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Therefore, she will spend $16.25.

6 0
2 years ago
Solve -3x + 12 = x – 4<br><br> Show your work
jeka94

Answer:

Step-by-step explanation:

-3x +12 =x-4

+3x

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3 0
4 years ago
Read 2 more answers
If the circumference of a circle is 82p , then the value of ‘r’ is
Andrews [41]

Answer:

41cm

Step-by-step explanation:

The circumference of a circle is 82π

Therefore r can be calculated as follows

2 × π × r= 82× π

2πr= 82π

r = 82π/2π

r= 41

Hence r is 41cm

8 0
2 years ago
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