Step-by-step explanation:
Let the number of girls = x
Therefore, no. of boys = 
Thus, no of boys in the class is 35.
Answer:
x = -6, 6
Step-by-step explanation:
Isolate the variable, x. Find factors of all terms on the left:
x² + 36 = 0
x 6
x 6
(x + 6)(x + 6) = 0
Solve for x:
(x + 6) = 0
x + 6 = 0
x + 6 (-6) = 0 (-6)
x = -6
x² + 36 = 0
x -6
x -6
(x - 6)(x - 6) = 0
Solve for x:
x - 6 = 0
x - 6 (+6) = 0 (+6)
x = 6
x = -6 , 6.
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To find median . . . list the number in order from least to greatest
10 , 11, 12, 12 13, 15
Then cross of a number from each side until you get to the middle number or middle 2 numbers.
IF there are 2 numbers add them together and divide by 2
12 + 12 = 24
24 / 2 = 12
Your median is 12
To find mean (this is the same as average) add all the numbers to get a total.
10 + 11 + 12 + 12 + 13 + 15 = 73
Then count the number of items added . . .6
Take the total and divide by the items counted
73 / 6 = 12.1666
Your directions say to round to the nearest tenth place.
12.166 = 12.2
Answer:
The answer I believe is 20
Step-by-step explanation:
Just add -34 + 54
Answer:
The cube has a side 4 cm long. This would mean the top of the cylinder ( circle) would have a diameter of 4 cm. and the height would also be 4 cm.
Volume of a cylinder is: Volume = πr^2h
r = radius = 4/2 = 2
h = height = 4
In terms of PI:
Volume = 2^2 x 4 x π
Volume = 16π cubic cm.
Using 3.14 for PI:
Volume = 3.14 x 2^2 x 4
Volume = 50.24 cubic cm.
