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quester [9]
3 years ago
5

PLEASEEE HELP!! 25 POINTS!!

Mathematics
1 answer:
Zepler [3.9K]3 years ago
7 0

Answer:

B and Cis the right answer

Step-by-step explanation:

hope it helps ☺

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The intake pipe can fill a certain tank in 6 hours when the outlet pipe is closed, but when the outlet pipe is open it takes 9 h
Lilit [14]

Answer:

18 hours

Step-by-step explanation:

The unit rate of intake pipe is \frac{1}{6}  [1 tank in 6 hours]

The total unit rate (combined) when 2 work together is \frac{1}{9}  [1 tank in 9 hours]

Intake fills up and outlet empties. Thus we can say:

Rate of Intake - Rate of Outlet = Combined Rate

This becomes:

\frac{1}{6}-x=\frac{1}{9}

Where x is the rate of outlet pipe [what we are looking for]

Doing algebra we solve for x:

\frac{1}{6}-x=\frac{1}{9}\\\frac{1}{6}-\frac{1}{9}=x\\x=\frac{9-6}{54}\\x=\frac{3}{54}

This means "outlet pipe can empty 3 tanks in 54 hours". So that would mean 54/3 = 18 hours to empty 1 tank

3 0
4 years ago
. Greg bought 6 post cards for $3.00. At this rate, how much would 10 post cards cost?
ivolga24 [154]

Answer:

$5

Step-by-step explanation:

I hope this helps :D

8 0
3 years ago
Read 2 more answers
henry rented a truck for one day. there was a base Fee of $18.95, and there was an additional charge of $.79 for each mile drive
crimeas [40]
<h3>Henry drove the truck for 208 miles</h3>

<em><u>Solution:</u></em>

Given that,

Base fee = $ 18.95

Additional charge of $.79 for each mile driven

Let "x" be the miles driven

Henry had to pay $183.27 when he returned the truck

Therefore,

Cost for rent = base fee + charge for "x" miles

183.27 = 18.95 + 0.79x

0.79x = 183.27 - 18.95

0.79x = 164.32

Divide both sides by 0.79

x = 208

Thus Henry drove for 208 miles the truck

3 0
3 years ago
Enter the number in scientific notation. 86,792 =
tester [92]

Answer:

8.6792 × 10 4 (I don't know how to make the four smaller but its 10 to the power of 4).

Step-by-step explanation:

8.6792 × 10 4. is the scientific notation

8 0
3 years ago
What is the slope of a line perpendicular to the line whose equation is 3x+y=-5
julsineya [31]

Answer:

tdy

Step-by-step explanation:

tyzey

7 0
3 years ago
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