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Svetach [21]
3 years ago
12

A bar of soap is shaped like a right rectangular prism. The base is a rectangle that is 12 centimeters by 2 centimeters. The hei

ght is 3 centimeters. A second bar of soap is shaped like a square pyramid with the same volume as the first bar of soap. Each side of the base of the pyramid is 6 centimeters in length. What is the height of the pyramid?​
Mathematics
1 answer:
evablogger [386]3 years ago
8 0

Answer:

6 cm

Step-by-step explanation:

Volume of a Prism = base area x height =

Base area = length x width =  12 x 2 = 24 cm^2

Volume = 24 x 3 = 72 cm^3

Volume of a pyramid = 1/3( l x w x h)

72 = 1/3( 6x6 x h)

Multiply both sides of the equation by 3

216 = 36 x h

divide both sides by 36

h = 6

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Brandon has a jar of quarters and dimes with a total value of $10.05. The number of quarters is 3
Hunter-Best [27]

Answer:

Brandon has <u>18 Dimes and 33 Quarters</u>  [Beware:  The problem does not state that Brandon owns the coins - he just has them.  Check your pockets]

Step-by-step explanation:

Let D and Q stand for the numbers of Dimes(D) and Quarters(Q).  <u>I'll use pennies instead of dollars, so avoid the clutter of decimal points</u>.

We are told that:

Q = 2D - 3  [The number of quarters is 3 less than twice the number of dimes.]

and

25Q + 10D = 1005   [total value of $10.05]

Substitute the value of Q in the first equation in the second, so that we have an equation with just one unknown, D.

25(2D-3) + 10D = 1005

50D - 75 + 10D = 1005

60D = 1080

<u>D = 18</u>

<u></u>

Q = 2D - 3

Q = 2(18) - 3

<u>Q = 33</u>

=============================

Check

25Q + 10D = 1005

25(33) + 10(18) = 1005  ?

825 + 180 = 1005  <u>YES</u>

----

Q = 2D - 3 ?

33 = 2(18) - 3    <u>YES</u>

8 0
2 years ago
What is the sum of the 12th square number and the 6th square number?​
aleksklad [387]

Answer:

180

Step-by-step explanation:

The 12 th square number is

12² = 12 × 12 = 144

The 6 th square number is

6² = 6 × 6 = 36

Thus

sum = 144 + 36 = 180

5 0
3 years ago
If a+3b=13 and a+b=5 the value of b is
AlladinOne [14]

Answer:

b = 4

Step-by-step explanation:

a + 3b = 13

a + b = 5 .....multiply by -1

=============

a + 3b = 13

-a - b = -5 (result of multiplying by -1)

=============add

2b = 8

b = 8/2

b = 4 <====

a + b = 5

a + 4 = 5

a = 5 - 4

a = 1

6 0
4 years ago
The figure below shows a right rectangular prism who is a square. Which shape does the intersection of the horizontal plane with
AveGali [126]

Answer:square

Step-by-step explanation:

4 0
3 years ago
Finding horizontal asymptotes of rational functions
nikitadnepr [17]
182 would be the correct answer
6 0
3 years ago
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