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2 years ago

6

A new type of pump can drain a certain pool in 8 hours. An older pump can drain the pool in 12 hours. How long will it take both

pumps working together to drain the pool.

1 answer:

Marina86 [1]2 years ago

8 0

Answer:

4

Step-by-step explanation:

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During a musical an orchestra is playing. As the music plays, the volume changes in the beginning of the piece can be modeled by

Alja [10]

Answer:

The numbers of measure of music played are 1 and 7

Step-by-step explanation:

Given

$s = 10|x - 4| + 50$

Required

Solve for x when s = 80

Substitute 80 for x

$80 = 10|x - 4| + 50$

Subtract 50 from both sides

$80 - 50= 10|x - 4| + 50 - 50$

$30= 10|x - 4|$

Divide through by 10

$\frac{30}{10}= \frac{10|x - 4| }{10}$

$3= |x - 4|$

Reorder

$|x - 4| = 3$

This can be split into

$x - 4 = 3$ or $x - 4 = -3$

Solve for x

$x = 4 + 3$ or $x = 4 - 3$

$x = 7$ or $x = 1$

Hence:

<em>The numbers of measure of music played are 1 and 7</em>

4 0

2 years ago

Maggie spent $50 buying 11 magazines.Some of the magazines cost $4 and the rest cost $5.How many $5 magazines did she buy?

antiseptic1488 [7]

Answer: She bought 6 $5 magazines and 5 $4 magazines

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

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ASHA 777 [7]

The anwer is B, f(x)=9500-750x

Hope this helps, brianliest if you can!

5 0

2 years ago

Fill in the table using this function rule y= 18-3x

Mashcka [7]

Answer:

1:15 2:12 3:9 5:3

Step-by-step explanation:

All you have to do is plug in the # under the letter x , and plug it into the equation. For example 18 - 3 x 1 , is just saying what is 18 - 3 . Another example would be 18 - 3 x 2 . the equation is simply just 18 - 6 . Just plug in the x numbers in the equation. Hope my answer helped , and good luck! : )

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3 years ago

Write and equation in standard form of the line shown.

KIM [24]

m=5

b=0

y=5x+0

trust me

7 0

2 years ago