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Dmitriy789 [7]
3 years ago
13

These prisms are similar. Find the surface area of the larger prism in decimal form.​

Mathematics
1 answer:
FinnZ [79.3K]3 years ago
5 0

Answer:

176.4

Step-by-step explanation:

1.) 7/5 = surface area/90 = (7/5)^2 = 49/25

2.) sa/90 = 49/25

3.) 4,410/25a

Surface area is 176.4

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Andy has 31 coins made up of quarters and half dollars, and their total value is $11.00. How many quarters does he have?
charle [14.2K]

Answer:

4

Step-by-step explanation:

This situation has two unknowns - the total number of half dollars and the total number of quarters. Because we have two unknowns, we will write a system of equations with two equations using the two unknowns.

  • h+q=31 is an equation representing the total number of coins
  • 0.50h+0.25q=11 is an equation representing the total value in money based on the number of coin. 0.50 and 0.25 come from the value of a half dollar and quarter individually.

We write the first equation in terms of q by subtracting it across the equal sign to get h=31-q. We now substitute this for h in the second equation.

0.50(31-q)+0.25q=11

15.5-0.50q+0.25q=11

15.5-0.25q=11

After simplifying, we subtract 15.5 across and divide by the coefficient of q.

-0.25q=-4.5

q=4

We now know of the 31 coins that 4 are quarters.

3 0
3 years ago
How much will it cost to carpet a rectangular room measuring 13.4 m by 24 m if carpeting costs​ $24.99 per square​ meter?
brilliants [131]

Answer:

$8036.784

Step-by-step explanation:

It is easy

The area of carpet is 13.4×24=321.6sq meter

Now, for 1 sq. meter the cost is $24.99

So for 321.6sq.meters, 321.6×24.99

=$8036.784

6 0
3 years ago
Lions live in groups called prides. Lion populations would most likely fall in which category of population distribution?(A) eve
AveGali [126]

Answer:

Its C. clumped

4 0
3 years ago
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Write 27 as a power and as repeated multiplication
Oxana [17]

Answer:

3*3*3

3^3

Step-by-step explanation:

27 = 9*3

    = 3*3*3

    = 3^3

6 0
3 years ago
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Please help, only two answers
Illusion [34]

Answer:

What I think are the answers are C,D, and A, hope this helps.

Step-by-step explanation:

8 0
2 years ago
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