MATHEMATICS MIDDLE SCHOOL

A circular swimming pool has a diameter of 12 m.What is the approximate circumference of the swimming pool?
Use pi star times = 3.14.
Express your final answer to the nearest hundredth.

Answers

Answer 1
Answer: circumfereince=pid
pi=3.14 for now
d=diameter
d=12
C=12*3.14
C=37.68 m

answer is 37.68m
if you wanted more acurite, then find to the thoustadth and round (you would ge 37.692 )
Answer 2
Answer: circumference of a circle = 2πr
so circumference = 2xπx(12/2)
                             =12*3.14
                             = 37.68 to the nearest hundreth

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Solve the equation: -5/4n  = 40My answer choices are: A: n = -50, B: n = -32, C: n = 32, D: n = 50
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A student earned a grade of 80% on a math test that had 20 problems.how many problems in this test did he student answer correctly (ROUND TO THE NEAREST WHOLE NUMBER)

Answers

Multiply 20 by.80 to find the number of correct answers, which is 16.  

Answer- 80 – 60 = 20, so 100 – 60 = 40 students

c

find the value of x if 3x - 20 = 130?find the value of x if 8x-2=-9+7x?
find the value of x if x + 6 = 33?

Answers

1.
3x-20=130
3x=130+20
3x=150
x=50

2.
8x-2=-9+7x
8x-7x=-9+2
x=-7

3.
x+6=33
x=33-6
x=27

those tasks are very simple, you should try to solve them on you're own first :)
3x-20=130\ \ \ /+20\n\n3x-20+20=130+20\n\n3x=150\ \ \ /:3\n\n3x:3=150:3\n\nx=50



8x-2=-9+7x\ \ \ /+2\ \ /-7x\n\n8x-7x=-9+2\n\nx=-7



x+6=33\ \ \ /-6\n\nx=33-6\n\nx=27

A rectangular closet has a perimeter of 10 feet. If the width of the closet is 3 feet what is the length of the closet?

Answers

The perimeter is equal to 2 * width + 2 * length.
We are provided that the width is 3 feet and the perimeter is 10 feet. So,
2 * 3 + 2 * length = 10
6 + 2 * length = 10
2 * length = 4
length = 2
The answer is 2 because if 2 sides are 3, then you add 3+3 which is 6. Then you think what plus 6 equals 10 which is 4. Finally, you have to take 4 and split it in half which is 2. Your answer is 2.

jolly is playing cards with her friend when she draws a card from a pack of 30 cards numbered from 1 to 30. What is the probability of drawing a number that is square?

Answers

there's 5 square number inside the pack ao the answer is 5/30
if need to simplify = 1/6

a family paid $19,200 as a down payment for a home. if this represents 12% of the price of the home, find the price of the home

Answers

The home is $160,000

Explanation:
$19,200 is 12% of the price. Take $19,200 and divide by 0.12 to get $160,000.

Answer:

A family paid $19,800 as a down payment for a home. If this represents 12% of the price of the home, find the price of the home.

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Let the price of the home be "x":

Equation:

0.12x = 19800

 

x = 19800/0.12

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x = $165,000

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Cheers,

Stan H.

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Step-by-step explanation:

At 30 degrees, Edgardo said the temperature was warm enough to go swimming. Did he mean to give the temperature in Fahrenheit or Celsius. Explain.

Answers

30 Fahrenheit is just below the typical freezing temperature of water. 30 Celsius is just a few degrees below normal body temperature . . . nice for casual swimming. Edgardo might also have been referring to 30 degrees latitude.
Certainly in Celsius, because this temperature in Fahrenheit is a low temperature
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