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erastovalidia [21]
2 years ago
14

there are 870 students at school in 20 of them are boys if each classroom holds 30 students how many classrooms are needed at th

e school
Mathematics
1 answer:
Lady bird [3.3K]2 years ago
5 0

870/ 30= 29 classrooms

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aliya0001 [1]

Answer:

Step-by-step explanation:

12.718 units

Step-by-step explanation:

The coordinates of the vertices of parallelogram WXYZ are given to be W(0,-1), X(4,0), Y(3,-2) and Z(-1,-3).

So, the perimeter of the parallelogram will be 2(WX + XY) {Since opposite sides of parallelogram are same in length}

Now, length of WX =  units,  To find the units click this link :

https://tex.z-dn.net/?f=%5Csqrt%7B(-1)%5E%7B2%7D%20%2B%204%5E%7B2%7D%20%7D%20%3D%20%5Csqrt%7B17%7D%20%3D%204.123

And, length of XY =  units, To find the units click this link :

https://tex.z-dn.net/?f=%5Csqrt%7B(4-3)%5E%7B2%7D%20%2B%20(0-(-2))%5E%7B2%7D%7D%20%3D%20%5Csqrt%7B5%7D%20%3D%202.236

Therefore, the perimeter of the parallelogram WXYZ = 2(4.123 + 2.236) = 12.718 units. (Answer)

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2 years ago
Laptops that sell for $660 are on sale with a percent discount of 7%. Find the sale price. Round your answer to the nearest cent
ivann1987 [24]

Answer:

$613.80

Step-by-step explanation:

7% of 660 = 0.07 × 660 = 46.2

660 - 46.2 = 613.80

6 0
2 years ago
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Anettt [7]
I’m pretty sure it’s 6 bc to calculate the volume it’s pie•radius^2
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2 years ago
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kvv77 [185]

Answer:

x = -2

Step-by-step explanation:

x+8 = 2x +10

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divide both side by -1

answer -- x = -2

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3 years ago
What is the expression for "the sum of 8 times a number and two"?
LiRa [457]

Answer:

8 N + 2

Step-by-step explanation:

==> 8 N + 2

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2 years ago
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