Answer:
A
Step-by-step explanation:
I took the test
The width of the card to the nearest tenth of an inch is 6.15 inches
<h3>Area of rectangle</h3>
- Width = x
- Length = 2x + 1
- Area = 88 square inches
Area of a rectangle = Length × Width
88 = (2x + 2) × x
88 = 2x² + 2x
2x² + 2x - 88 = 0
x = -b ± √b² - 4ac / 2a
= -2 ± √2² - 4(2)(-88) / 2(2)
= -2 ± √4 - (-704) / 4
= -2 ± √708 / 4
= -1/2 ± √177/2
x = 6.15 or -7.15 inches
The width of the rectangle can not be negative, so, 6.15 inches is the width.
Learn more about rectangle:
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You can write the expression by reading it step by step. “The quotient of 10 and a number (x)” means 10/x. “Increased by 6” means +6. So, the expression is: 10/x+6 or (10/x)+6 to makes it easier to look at. Hope this helped!
Answer:
The temperature at the top of a mountain was -3°C in the afternoon. It fell down by 13°C at night. That will bring it to -16°
She needs 7 plates because there are 7 pieces left.