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Reika [66]
3 years ago
11

The square of the sum of a number and 3 is 16. Find the number.(There are two solutions.)

Mathematics
2 answers:
iren2701 [21]3 years ago
5 0
1,-7 hope this helps
mote1985 [20]3 years ago
3 0

Answer:

1 , -7

Step-by-step explanation:

(x+3)² = 16

then

(x+3)² = 4²

then

|x+3| = 4

then

x+3=4 or x+3= -4

then

x=4-3=1  or  x= -4-3= -7

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You can round each number to the nearest half

12 3/8 = 12 1/2

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Now, you have: 12 ½ × 7

Since you have a mixed number, change it to a decimal to make it easier.

12 ½ = 12.5

12.5 × 7 = 87.5

The product of 12 3/8 and 6 7/8 is about 87 1/2 = 87.5

~Aamira~

Hope this helped :)
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