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sattari [20]
3 years ago
7

Drains and me are used to empty a swimming pool. Train eight alone can empty the pool in 4.75 hours. How long will it take train

be alone to empty the pool if it takes 2.6 hours would both genes are turned on?
Mathematics
1 answer:
nikdorinn [45]3 years ago
7 0
<h2>Answer:</h2><h2>It takes 5.744 hours for drain B to empty the pool.</h2>

Step-by-step explanation:

Let drain A nad be are used  to empty a swimming pool.

Given drain A alone can empty the pool in 4.75 hours.

When both A and B are open, it takes 2.6 hours.

The time taken by B to draint the pool = ?

\frac{t+4.75}{4.75t} = \frac{1}{2.6}

2.6 (t+4.75) = 4.75t

2.6t + 12.35 = 4.75t

t = 5.744 hours

It takes 5.744 hours for drain B to empty the pool.

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Harrizon [31]

Answer:

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Step-by-step explanation:

6 0
3 years ago
Find 0.01 more than 9.154
sp2606 [1]

Answer:

Hey!

Your answer is 9.164!!

Step-by-step explanation:

Adding 0.01 means just adding 1 to THE DIGIT IN THE HUNDRETH PLACE...2 SPACES RIGHT OF DECIMAL POINT!

5+1=6

SUB IN:

9.164

5 0
3 years ago
Which value of x makes the equation -5x-(-7-4x) =-2(3x-4 true?
Ludmilka [50]

Answer:

x = 1/5

Step-by-step explanation:

Step 1: Write equation

-5x - (-7 - 4x) = -2(3x - 4)

Step 2: Solve for <em>x</em>

  1. <u>Distribute:</u> -5x + 7 + 4x = -6x + 8
  2. <u>Combine like terms:</u> -x + 7 = -6x + 8
  3. <u>Add 6x to both sides:</u> 5x + 7 = 8
  4. <u>Subtract 7 on both sides:</u> 5x = 1
  5. <u>Divide by 5 on both sides:</u> x = 1/5

Step 3: Check

<em>Plug in x to verify it's a solution.</em>

-5(1/5) - (-7 - 4(1/5)) = -2(3(1/5) - 4)

-1 - (-7 - 4/5) = -2(3/5 - 4)

-1 - (-39/5) = -2(-17/5)

-1 + 39/5 = 34/5

34/5 = 34/5

5 0
3 years ago
3.5(x+2.2)^2+3.5(y-11.1)^2=21 what is the radius of the circle?
Alchen [17]
The radius of the circle would be 12
4 0
3 years ago
Select the polynomial that can be factored as (4x-5)(16x^2+20x+25)
bezimeni [28]

f(x) = 64x³ - 125

Multiply each term in the second factor by each term in the first factor

= 4x(16x² + 20x + 25) - 5(16x² + 20 x + 25)

=64x³ + 80x² + 100x - 80x² - 100x - 125

= 64x³ - 125 ← difference of cubes




5 0
3 years ago
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