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Tanya [424]
3 years ago
14

1/3(t+6)-10=3t+2 Solve for t

Mathematics
2 answers:
Juliette [100K]3 years ago
8 0

Answer:

-15/4 or -3.75

Step-by-step explanation:

anyanavicka [17]3 years ago
3 0

Step-by-step explanation:

<u>t </u>+ 2 - 10 = 3t + 2

3

Cross multiply

t +2 - 10 = 3(3t + 2)

t + 2 - 10 = 9t + 6

Collect like terms

2 - 10 - 6= 9t - t

- 14 = 8t

Divide both sides by 8

<u>-</u><u>7</u><u> </u>= t

4

Therefore t = <u>-</u><u> </u><u>7</u><u> </u> or -1 <u>3</u>

4 4

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Answer:

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Step-by-step explanation:

the base of the pyramid would be 76 ft², since 12*6=72. Then you get the surface area of the sides. 2 of the sides would be 48 ft², since (12*8)/2=48. The other 2 sides would be 28.5 ft², since (6*9.5)/2-28.5. Then you just add the surface areas of all the sides; 76+48+48+28.5+28.5 to get 225.

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