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2 years ago

I have a 2 in the tens place. when you add 18 to me, you get 39. what number am I ?

Mathematics

1 answer:

SIZIF [17.4K]2 years ago

8 0

X=number
x+18=39
minus 18 both sides
x+18-18=39-18
x+0=21
x=21
the number is 21
and it has 2 in tens palce

21

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2 years ago

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Population standard deviation 24

Step-by-step explanation:

The average estimated hours a person in the United States spent playing video games per year from 2002 to 2012 were 71, 80, 82, 78, 80, 91, 107, 121, 125, 131, and 142.

The population variance is given by:

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This implies that:

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3 years ago

Read 2 more answers

Help me with this question please!! no links!!

In-s [12.5K]

50.24
4 squared is 16
16•3.14= 50.24
A= 3.14(4)^2
:)

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2 years ago