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Pie
3 years ago
8

About 60% of people in North America know how to swim. Use that statistic to answer the questions below.

Mathematics
2 answers:
kenny6666 [7]3 years ago
8 0

Answer:

(Picture)

Step-by-step explanation:

To find 60% of people you just multiply .6 with the number you are trying to find 60% of. Like 100. 100 times .6 = 60.

tankabanditka [31]3 years ago
7 0

Answer:

The first one is 24. The second one is 1200. The third one is "a prediction of".

Step-by-step explanation:

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Pls help I hate math rectangular prism
nekit [7.7K]

Answer:

352.5cm^{2}

Step-by-step explanation:

A=3Rectangles+2Triangles\\=3*7.5*13.5+2*.5*6.5*7.5=352.5cm^{2}

8 0
3 years ago
There are four children in a family, two girls, Kate and sally, and two boys, tom and Ben.
scZoUnD [109]

Answer:

Bren=5 years

Tom=7yrs

Sally=4 yrs

Kate=8years

Step-by-step explanation:

-Let Bren's current age be  x, therefore Tom is x+2

-Let Sally's current age be y, therefore Kate is 2y

-Also, given that:

x+x+2=2y+y\\\\2x+2=3y\ \ \ \ \ \ ...i

#We calculate the ages one year ago of Tom and Sally:

\#Tom's \age\\x+2-1=x+1\\\\\# Sally's \ age\\=y-1\\\\\therefore x+1=2(y-1)\\\\x=2y-3\ \ \ \ \ ...ii

#Substitute for x in i;

2x+2=3y\\\\2(2y-3)+2=3y\\\\4y-6+2=3y\\\\y=4\\\\2y=4\times 2=8\\\\2x+2=4+8=12\\\\2x=10\\\\x=5\\\\(x+2)=7

6 0
3 years ago
A quiz has 5 questions with answers that are either true or false. How many different combinations of answers are possible?
Liula [17]
512..please mark bianliest or at least 5 stars
5 0
3 years ago
Peter wants to use 75-watt lightbulbs and other electronics in his tree house. He has one outlet with a maximum of 900 watts. Wh
ohaa [14]

Expression is 900 - 75n

Step-by-step explanation:

  • Step 1: Maximum watts that can be used is 900W. Find amount of watts used by n light bulbs.

⇒ Watts used by n light bulbs = 75 × n = 75n

  • Step 2: To find the remaining amount of wattage, subtract the maximum possible W and the watts used by the light bulbs.

⇒ 900 - 75n

8 0
3 years ago
Read 2 more answers
Monica’s school band held a car wash to raise money for a trip to a parade in New York City. After washing 125 cars, they made $
nikklg [1K]

The system of linear equations represents the situation is;

x + y = 125

x + y = 1255x + 8y = 775

<h3>Simultaneous equation</h3>

Simultaneous equation is an equation in two unknown values are being solved for at the same time.

let

  • number of quick washes = x
  • number of premium washes = y

x + y = 125

5x + 8y = 775

From equation (1)

x = 125 - y

5x + 8y = 775

5(125 - y) + 8y = 775

625 - 5y + 8y = 775

- 5y + 8y = 775 - 625

3y = 150

y = 150/3

y = 50

  • Substitute y = 50 into

x + y = 125

x + 50 = 125

x = 125 - 50

x = 75

Therefore, the number of quick washes and premium washes Monica’s school band had is 75 and 50 respectively.

Learn more about simultaneous equation:

brainly.com/question/16863577

#SPJ1

3 0
2 years ago
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