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Airida [17]
2 years ago
10

Round 23.157 to the nearest tenth

Mathematics
2 answers:
stepan [7]2 years ago
3 0

The answer to this question is 23.2

katovenus [111]2 years ago
3 0

First of all you need to understand the placements in this number.

the first number after the decimal is the tenths place (1)

the second number after the decimal is the hundreds place (5)

the third number after the decimal is the thousands place. (7)

To round this number to the nearest tenth we have to look at the hundreds place. If it is a 5 or larger then the 1 becomes a 2. In this case that happens.

<u>Rounded the answer is </u>

<u>23.2 </u>

GOOD LUCK :)

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Water is pumped into a tank at a rate of r (t)=30(1−e− 0.16t) gallons per minute, where t is the number of minutes since the pum
Vlad1618 [11]

Answer:

The total volume of the water in the tank after 20 minutes = 1220 gallons

Step-by-step explanation:

Rate of water pumped into the tank  r (t) = 30 (1 - e^{-0.16 t} )

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The water in the tank after 20 minutes = Initial volume of water in the tank + Volume of water being pumped in the tank

V_{total} = V_{i} + V_{pump}

V_{pump} = \int\limits^a_b {r(t)} \, dt

Where a = 0 , b = 20

Put the value of r (t) in above equation we get

V_{pump} = \int\limits^a_b {30 (1 - e^{-0.16t} )} \, dt

V_{pump} = 30 [ t + \frac{e^{-0.16t} }{0.16} ]

V_{pump} = 30[ (20- 0) + \frac{1}{0.16}(e^{-0.16 (20)}- e^{0}  )

V_{pump} = 420 gallon

Now, total volume in the tank

V_{total} = V_{i} + V_{pump}

V_{total} = 800 + 420

V_{total} = 1220 \ gallon

Therefore the total volume of the water in the tank after 20 minutes = 1220 gallons

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3 years ago
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Answer: She mixed up the slope and y-intercept when she wrote the equation in step 3.

Step-by- explanation:

Hope this helps :)

8 0
3 years ago
Read 2 more answers
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