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lions [1.4K]
3 years ago
5

Delsym middle school has 1,800 students. A random simple of 80 shows that 24 have cell phones. Predict the number of students in

the school who have cell phones
Mathematics
1 answer:
Paul [167]3 years ago
7 0
Cross multiply and set it up like this.

1800 X
------- • -------
80 24

Multiply 1800•24
Then divide by 80 and you get 540.
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The sum of three consecutive even numbers is one hundred sixty - two.
Alenkasestr [34]

Answer:

 52

Step-by-step explanation:

Let x represent the smallest of the three numbers. Then the other two are (x+2) and (x+4). Their sum is ...

  x + (x+2) +(x+4) = 162

  3x = 156 . . . . . . . . . . . .subtract 6

  x = 156/3 = 52

The smallest of the three numbers is 52.

___

I like to work problems like this by considering the average number. Here, the average of the three numbers is 162/3 = 54, the middle number of the three. Then the smallest of the three consecutive even numbers is 2 less, or 52.

5 0
3 years ago
Put this on order from greatest to least pls​
Nostrana [21]

Answer:

0.497 < 1/2 < 0.55 < 3/5 < 6/7

Step-by-step explanation:

Order from Least to Greatest

1: Using the given inputs

2: Rewriting these inputs as decimals

3: Sorting this table by decimal values in order from least to greatest

4: Therefore, the sorted inputs in order from least to greatest is

Answer: 0.497 < 1/2 < 0.55 < 3/5 < 6/7

Hope this helps.

3 0
3 years ago
Solve each equation. 0.2x2 + 1.2 = 3.4
Marat540 [252]
0.2x^2+1.2=3.4\ \ \ |-1.2\\\\0.2x^2=2.2\ \ \ |:0.2\\\\x^2=11\to x=\pm\sqrt{11}\\\\\text{Answer:}\ x=-\sqrt{11}\ \vee\ x=\sqrt{11}
6 0
3 years ago
Read 2 more answers
The perpendicular line of x-6y=2, (2, 4) in slope intercept form
pentagon [3]
The perpendicular line to x-6y=2, and passing through (2, 4) is y=-6x+16
3 0
3 years ago
Curtis spent $60 less than 3 times what Jaclyn spent. Curtis spent $36. How much did Jaclyn spend?
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Answer:

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5 0
3 years ago
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