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kirill115 [55]
3 years ago
15

If pump A can fill a water tank in 6 hours and Pump B can fill the water tank in 8 hours, how long will it take to fill the wate

r tank if the pumps work together
Mathematics
1 answer:
trasher [3.6K]3 years ago
5 0

Answer:

2 hours

Step-by-step explanation:

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Estimated the find the product of 416x9=
astraxan [27]
The answer to this question is 3744
7 0
3 years ago
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What is the solution of the system of equations X plus 3Y equals seven, 3X plus 2Y equals 083, to be -2, 3C2, negative3D -3, 28
enot [183]

Answer:

B

Step-by-step explanation:

x + 3y = 7 → (1)

3x + 2y = 0 → (2)

Multiplying (1) by - 3 and adding to (2) will eliminate x

- 3x - 9y = - 21 → (3)

Add (2) and (3) term by term to eliminate x

0 - 7y = - 21

- 7y = - 21 ( divide both sides by - 7 )

y = 3

Substitute y = 3 into either of the 2 equations and solve for x

Substituting into (1)

x + 3(3) = 7

x + 9 = 7 ( subtract 9 from both sides )

x = - 2

solution is (- 2, 3 ) → B

7 0
3 years ago
Harlene tosses two number cubes. If a sum of 8 or 12 comes up, she gets 9 points. If not, she loses 2 points. What is the expect
Amanda [17]
P(8 or 12) = 1/6
P(not 8 or 12 = 5/6
Let the expected points fro one roll be X.
E(X)=9\times\frac{1}{6}-2\times\frac{5}{6}=-\frac{1}{6}\ points
The answer is -(1/6) points.
5 0
3 years ago
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How do you solve this?
const2013 [10]

Hello.

-50 <7k +6

-56 < 7k

-8 < k

k > -8 Your first answer is done.

7k +6 <-8

7k<-14

k < -2 There's your second answer.

For graphing, remember these rules:

1). Left to right-- Smaller to bigger numbers.

2). < or > is an unfilled/ empty dot.

3). greater than or equal/ less than or equal to is a filled dot.

**************************

Hope this helped.

Disclaimer:

Always double check your answer with a reliable source, as mistakes can be made.

7 0
3 years ago
Find the perimeter of the shaded region. Round your answer to the nearest hundredth
DerKrebs [107]

Answer:

38 units

Step-by-step explanation:

13+13=26

6+6=12

26+12=38

4 0
2 years ago
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