Solve for b:
b² = 8b + 84
1 answer:
B² = 8b + 84
b² - 8b - 84 = 0
b = <u>-(-8) +/- √((8)² - 4(1)(-84))</u>
2(1)<u>
</u>b = <u>8 +/- √(64 + 336)</u>
2
b = <u>8 +/- √(400)
</u> 2<u>
</u>b = <u>8 +/- 20
</u> 2
b = 4 <u>+</u> 10
b = 4 + 10 b = 4 - 10
b = 14 b = -6
<u />
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2nd option
hope it helps...!!!
140% = $34.30
1$ = 0.245
100% = 0.245 x 100 =$24.50
The cost of the sweater os $24.50
