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2 years ago

Seven pipes empty a water tank in five days. In how many days would four pipes empty this tank?

Mathematics

1 answer:

gayaneshka [121]2 years ago

5 0

Answer:

8.75 days

Step-by-step explanation:

7/4=1.75

1.75*5=8.75

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1/12 the fraction divided by 30

nexus9112 [7]

1/12 ÷30 is equal to 1/360 or in decimal form is a repetitive decimal which is .2777777777777777777777....

7 0

3 years ago

Read 2 more answers

Pls answer this i want to know ok ok ok ok ok

bogdanovich [222]

Step-by-step explanation:

$given \\ (x + \frac{1}{x} ) = 7 \\ now \\ (x + \frac{1}{x} ) ^{2} \\ (7) ^{2} (given) \\ 49 \\ again \\ {x}^{2} + ( \frac{1}{x} ) ^{2} \\ (x + \frac{1}{x}) ^{2} - 2 \times x \times \frac{1}{x} \\ (7) ^{2} - 2 \\ 49 - 2 \\ 47$

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3 years ago

The sales tax in Jorge's state is 7%. Jorge bought a Ford Mustang having a sales tax of $1,928.22. What was the cost of the car?

Thepotemich [5.8K]

The cost of the car is $27,546

<h3>How to calculate the cost of the car ?</h3>

The sales tax is 7%

Jorge bought a ford mustang having a sales tax of $1,928.22

Therefore the cost of the car can be calculated as follows

7/100 = 0.07

1928.22/0/07

= 27,546

Hence the cost of the car is $27,546

#SPJ1

4 0

1 year ago

Please help with the this give tiny explanation

Mila [183]

Answer:

first we begin from 1 to 100 we find 11 numbers contain 1 then we count 1s from 10 to 19 we get 9 numbers but there is an exciption in number 11 as it cotains 2 1s so thenumber of 1s is 21

5 0

3 years ago

What is the volume of a square pyramid with a base length of 6cm and a height of 9cm?

emmainna [20.7K]

Answer:
Volume = 108 cm ³

Explanation:
For a square pyramid, the volume can be calculated as follows:
Volume = $\frac{1}{3}$ * area of base * height
Volume = $\frac{1}{3}$ * side² * height
We have:
side length = 6 cm
height = 9 cm
Therefore:
Volume = $\frac{1}{3}$ * 36 * 9 = 108 cm ³

Hope this helps :)

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3 years ago