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3 years ago

3n - 17 = -50 two step equations help please

Mathematics

2 answers:

likoan [24]3 years ago

8 0

Answer:

n = -11

Step-by-step explanation:

3n - 17 = -50

⇒ 3n = -33

⇒ n = -11

lubasha [3.4K]3 years ago

4 0

Answer:

n = -11

Step-by-step explanation:

3n - 17 + 17 = -50 + 17

3n = -33

3n/3=-33/3

n = -11

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A tank holds 50 gal of water, which drains from a leak at the bottom, causing the tank to empty in 20 min. The tank drains faste

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Answer:

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(c)

Time volume

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(d)

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Step-by-step explanation:

Given that the capacity of the tank is 50 gal.

Torricelli's Law gives the volume of water remaining in the tank after t minutes as

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(a)

To find V(0), we put t = 0 in the above equation

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To find V(20), we put t =2 0 in the above equation

$V(20)=50(1-\frac{20}{20})^2$

$=50(1-1)^2$

= 0 gal

(b)

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At t=0 the tank is empty.

(c)

Time V(t)

0 $50(1-\frac{0}{20})^2=50 \ gal$

5 $50(1-\frac{5}{20})^2=37.5 \ gal$

10 $50(1-\frac{10}{20})^2=25 \ gal$

15 $50(1-\frac{15}{20})^2=12.5 \ gal$

20 $50(1-\frac{20}{20})^2=0$

(d)

Net change of volume = V(0) -V(20)

=(50-0) gal

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Read 2 more answers

Steven needs to type a 2000 word document for work. If he can type 125 words in 2 minutes, how long will it take to type the who

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Answer:

32 minutes

Step-by-step explanation:

This can be calculated with some good old division and multiplication:

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