Answer:
20
Step-by-step explanation:
Divide 62.8 by 3.14
Answer:
8 with a remainder of 4
step by step explanation:
The width of the cooling tower at the base of the structure is 40 meters.
<h3>Width of the cooling tower </h3>
Given equation
x²/400 -(y-90)²/1600=1
Solving for the width
Cooling tower width =2√400
Cooling tower width=2×20
Cooling tower width=40 meters
Therefore the correct option is D. 40 meters.
Learn more about width here:brainly.com/question/25855344
brainly.com/question/15356328
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<h3>
Answer: $70</h3>
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Explanation:
- x = number of days that elapsed
- y = bank balance in dollars
His bank balance is represented by the linear equation y = -20x+150.
The slope -20 means the balance goes down by 20 dollars each day. The y intercept 150 is the starting balance.
Plug in x = 4 to find the balance after four days
y = -20x+150
y = -20*4+150
y = -80+150
y = 70
His balance is $70 after four days. The -80 in the third step indicates the balance had gone down by $80.
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Another way to see why the answer is $70 is to write it out like this
day 0 = $150
day 1 = 150-20 = $130
day 2 = 130-20 = $110
day 3 = 110-20 = $90
day 4 = 90-20 = $70
