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Ber [7]
3 years ago
10

Why does these expressions 2(30x-24), 3(20x-16), and 4(15x-12) have the same expansion?

Mathematics
1 answer:
MariettaO [177]3 years ago
6 0
The expressions have the same expansion I'd say because the pairs 2 and 30, 3 and 20, and 4 and 15 because they are all equivalent to 60 because they are all factors of 60.

Same goes with the other pairs, because they are all equivalent to 48 because they are all factors of 48.
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Larisa buy 5 hats for 9.99 per hat.how much does he spend
IceJOKER [234]

Answer:

49.95

Step-by-step explanation:

I got this answer by rounding 9.99 to 10 and I remembered I rounded it up by 1 cent. Then I multiplied 10 by 5 which is 50. then I multiplied 1 (cent) by 5 which is 5 cents and subtracted it from 50 which is 49.95

3 0
3 years ago
Read 2 more answers
One number is 18 more than three times another number. The difference in the numbers is 54. Find the numbers
Kruka [31]
The equations would be:
x=18+3y
x+y=54
(substitute x in the second equation with 18+3y)
18+3y+y=54
(combine like terms and solve for y)
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8 0
4 years ago
BRAINLIEST!! HELP!!
atroni [7]

Definition of midpoint.

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5 0
4 years ago
"Use the following information to answer the question. The mean age of lead actresses from the top ten grossing movies of 2010 w
julia-pushkina [17]

Answer:

a) 10.6; 48.7; within

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 29.6

Standard deviation = 6.35

"According to the Empirical Rule, the ages of nearly all lead actresses will be between______________and_____________ years.

Nearly all(99.7%) will be within 3 standard deviations from the mean.

So from 29.6 - 3*6.35 = 10.6 years to 29.6 + 3*6.35 = 48.7 years.

Anna was 11-years old, so she was within this range.

So the correct answer is

a) 10.6; 48.7; within

7 0
3 years ago
Find the volume of the triangular prism.
Anna35 [415]
First you find the area of the front face 1/2bh or in you case 10x12=120  1/2 of 120 is 60  next you multiply 60 by 20 to get 1,200 for the voulume 
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3 years ago
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