0.25x² + 8.5 - 17 = 0
1)
a = 0.25
b = 8.5
c = -17
2)
- 8.5 ± √(8.5)²-4(0.25) (-17)
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2(0.25)
3)
-34 ± √1428
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2
4)
-35.894 and 35.894
Answer:
Let's solve your inequality step-by-step.
|x|+3>8
Step 1: Add -3 to both sides.
|x|+3+−3>8+−3
|x|>5
Step 2: Solve Absolute Value.
|x|>5
We know eitherx>5orx<−5
Step-by-step explanation:
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Let:
P - perimeter
l - length
w - width
We know:
P = 118 m
l = 2w - 7
<h3>Rectangle perimeter's formula: P = 2l + 2w</h3>
We replace the length with 2w - 7.
P = 2×(2w - 7) + 2w
118 = 4w - 14 + 2w
118 = 6w - 14
6w = 118 + 14
6w = 132
w = 22 meters