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Alinara [238K]
2 years ago
13

(3a) You spend $72 on tapes and CDs. Each tape costs $8 and each CD costs $12.

Mathematics
1 answer:
Makovka662 [10]2 years ago
6 0

Answer:

3a. 8t + 12c = 72

3b. t + c = 7

Step-by-step explanation:

number of tapes is t

number of Cds is c

so 8t + 12c = 72

and t + c = 7

so t = 7 - c

replace t = 7 - c in to the first equation

8(7 - c) + 12c = 72

56 - 8c + 12c = 72

4c = 72 - 56 = 16

c = 4

if c = 4, then t = 7 - c = 7 - 4 = 3

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Convert to scientific notation: 0.0509.
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Josh and Greg leave from the same place
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9514 1404 393

Answer:

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Step-by-step explanation:

Let x represent Josh's rate of travel in miles per hour. After 2 hours, his distance is ...

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Josh's rate: 32 miles per hour; Josh's distance = (2 h)(32 mi/h) = 64 miles.

Greg's rate: (32 mi/h)·2 = 64 mi/h; Greg's distance = (5 h)(64 mi/h) = 320 miles.

<em>__</em>

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6 0
3 years ago
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Therefore, the bearing of R from P is 119°

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2 years ago
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