All categories

3 years ago

A dishwasher uses 5.04 gallons of hot water in 12 minutes. What is this rate in gallons per hour?

Mathematics

2 answers:

olya-2409 [2.1K]3 years ago

4 0

Answer:

0.42 gallons per hour

Step-by-step explanation:

Marysya12 [62]3 years ago

3 0

Answer:

25.2 gallons

Step-by-step explanation:

If it uses 5.04 gallons of water in 12mins

Then, 1min=5.04/21

=0.42 gallons

1hrs=60mins

So, 60×0.42=25.2 gallons

1hrs is equal to 60mins and 60÷12=5

So, 5.04×5=25.2 gallons

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sergejj [24]

the volume formula is

V=4 /3 * πr3

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3 years ago

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8x-5y=21 simultaneous linear equation<br>2x+9y=-5

olya-2409 [2.1K]

Answer:

$x=2$ and $y=-1$

Step-by-step explanation:

If two equations are given, we can solve one of the equation in terms of single variable and put it in the other equation which will further give the value of x and y.

For the given equations:

$8x-5y=21$ Equation:1

$2x+9y=-5$ Equation:2

Solving equation multiply equation 2 with 4 on both the sides

$8x+36y=-20$ Equation 3

Subtracting Equation:3 from Equation:1

$8x-5y-(8x+36y)=21-(-20)\\8x-5y-8x-36y=21+20\\-41y=41\\y=-1$

Putting value of 'y' in Equation:2 which will give the value of x

$2x+9y=-5\\2x+9(-1)=-5\\2x-9=-5\\2x=4\\x=2$

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3 years ago

Assistance if you please?

dybincka [34]

Answer:

38°

Step-by-step explanation:

a whole circle is equal to 360 degrees so if 52 +90= 142 the opposite side also equals 142 because they are clearly the same size. ED and AB are also the same sizes. if 360- (142+142) = 284. then you will have to divide 284 by 2. so 284÷2=76 and 76÷2=38°

hope you understand, I not that good at explaining things

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2 years ago

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ale4655 [162]

Answer:

Step-by-step explanation:

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3 years ago

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Which equation is the result of subtracting the second equation from the first?

rewona [7]

Answer:

the answer is

-x-8y=8

or, x + 8y= -8

Step-by-step explanation:

4x - 6y = 13 - (5x + 2y = 5)

or, 4x - 6y = 13

- 5x - 2y = -5

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2 years ago