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erma4kov [3.2K]
3 years ago
11

At the Oral Language Fair, Tom’s speech took 9 1/2 minutes. Andrea’s speech was 7/8 as long as Tom’s. How long was Andrea’s spee

ch?
Mathematics
1 answer:
Grace [21]3 years ago
5 0
7/8 * 9 1/2 =. 8.31 minutes
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Answer:

a = -11, 17.

Step-by-step explanation:

-7 =  |a-3| / -2

Multiply both sides by -2:

|a - 3| = 14

So a - 3 = 14

Giving a = 17

or

a - 3 =- -14

giving a = -11.

Checking these values:

-7 = |17-3| / -2 = 14/-2 = -7  

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-7 = |-11-3| / -2 = 14/-2 = -7

so a = -11 is also a solution.

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