4 years ago

Find the mean of the snowfall amounts?

1 answer:

5 0

Mean is the same as average. Adding up all the amounts then dividing it by the number of amounts. In this case, we add up all the snowfall amounts and then we divide it by 10 ( the count or number of snowfall amounts).
In equation,
(13+19+16+23+11+18+14+26+13+16) / 10 = 16.9

Th answer is A. 16.9 inches.

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What is it<br><br> −4(3/2x−12)=−15

Greeley [361]

Answer:

x = 21/2

Step-by-step explanation:

Step 1: Write equation

-4(3/2x - 12) = -15

Step 2: Solve for <em>x</em>

Distribute -4: -6x + 48 = -15
Subtract 48 on both sides: -6x = -63
Divide both sides by -6: x = 21/2

3 0

3 years ago

If the ratio of boys to girls in a classroom is 2:3 and there are 10 boys, how many girls are there? Please answer thank you!

MakcuM [25]

Answer:
15 girls

Explanation:
We know that the ratio of boys to girls in the classroom is 2:3, meaning that for every 2 boys there are 3 girls.

Now, we can set up a proportion to solve this problem.

Please see the picture attached.

I hope this helps!

7 0

3 years ago

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What is the probability of getting dealt a hand equal to 21?

Grace [21]

Answer:

The odds to get a blackjack (natural) as arrangement: 128 / 2652 = . 0483 = 4.83%. 4.83% is equivalent to about 1 in 21 blackjack hands.

6 0

4 years ago

Use a for your variable. 13 less than 4 times a number is greater than 75 what's the answer

sammy [17]

Answer:

Let n = the number

4n - 9 = n

3n = 9

n = 3

6 0

3 years ago

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The sum of three numbers is 51 . the second number is 2 times the third. the third number is 9 more than the first. what are the

hammer [34]

X+y+z=51

y=2z
z=9+x

subsitute those

x+2z+9+x=51
x+2(9+x)+9+x=51
x+18+2x+9+x=51
4x+27=51
minus 27 both sides
4x=24
divide by 4
x=6

sub back

z=9+x
z=9+6
z=15

y=2z
y=2(15)
y=30

the numbers are
6,30,15

8 0

3 years ago

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