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choli [55]
2 years ago
14

Surface area? of the pyramid

Mathematics
1 answer:
prohojiy [21]2 years ago
5 0
45 ft^2 is the surface area
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Please help me I can't get anymore wrong :)
aev [14]

Answer:

C

Step-by-step explanation:

I hoped i helped please don't be mad if I'm wrong TT>TT

8 0
3 years ago
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A shelf of books at the library can hold 60.5 pounds of books.
KengaRu [80]
Atleast 302.5 can fit on the shelves

3 0
3 years ago
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If U= π(r+h), find r when U =16/1/2 and h = 2/3/4<br><br>π = 3/1/7​
krek1111 [17]

Answer:

r = 2.5

Step-by-step explanation:

U= π(r+h)

Where,

U = 16 1/2

h = 2 3/4

π = 3 1/7​

U= π(r+h)

16 1/2 = 3 1/7(r + 2 3/4)

33/2 = 22/7(r + 11/4)

33/2 = 22/7r + (22/7 * 11/4)

33/2 = 22/7r + 242/28

33/2 - 242/28 = 22/7r

(462-242) / 28 = 22/7r

220/28 = 22/7r

r = 220/28 ÷ 22/7

= 220/28 × 7/22

= (220 * 7) / (28 * 22)

= 1540/616

= 2.5

r = 2.5

4 0
3 years ago
joe and Eric have to ship 75 packages. Joe can do the job alone in 5 hours. if Eric helps, they get it done in 4 hours. How long
Umnica [9.8K]

Eric took 20 hours to do the job alone.

<u>Step-by-step explanation</u>:

<u>Given </u>:

  • Total work = 75 packages
  • Joe took 5 hours to complete the total work.

The amount of work Joe alone can do per hour = 75/5 = 15 packages.

The amount of work Joe and Eric together do per hour = 75/4 = 18.75

The amount of work Eric alone can do per hour = 18.75 - 15 = 3.75

The time Eric took to complete the entire work = 75 / 3.75 = 20 hours.

8 0
3 years ago
Out loud. Find the solution to the expression in the easiest way:
o-na [289]

Answer:

-88/85

Step-by-step explanation:

2 14/49=112/49

7 3/85=598/85

3 35/49=182/49

------------------------

112/49-(598/85-182/49)

112/49-1976/595

-88/85

3 0
3 years ago
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