If there are approximately 6 1/2 hours in the school day, how many minutes are in the school day?

Mathematics

2 answers:

natita [175]3 years ago

4 0

390 minutes

Multiply 6 by 60 and then add 30

nadezda [96]3 years ago

3 0

In 6 hours there is 360 minutes and 1/2 hours is 30 minutes so add 30 to 360 to get 390. There are 390 minutes in a school day

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What is the value of x when 3x < -2x + 15

Solnce55 [7]

Answer:

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the gasoline gauge on a van initially read 1/8 full. When 15 gallons were added to the tank the gauge read 3/4 full. How many mo

Nostrana [21]

So 15 gallons of gas brought it from 1/8 full to 3/4 full.

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3 years ago

Please help thanks :)

kykrilka [37]

Question 1:

Multiply both sides of the proportion by 35.

You get.

7(x-1) = 4x+2

7x-7 = 4x+2

Now, add both sides by 7 and subtract both sides by 4x

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Divide both sides by 3

x=3

Question 2:

Multiply both the numerator and the denominator of $\frac{x+1}{x+3}$ by 3.

We want to multiply it by 3 so that the +1 and +3 become +3 and +9. +3 and +9 have a difference of 6, just like 15 and 21, which is what we want.

$\frac{3x+3}{3x+9} = \frac{15}{21}$

Set the numerator equal to the numerator and the denominator equal to the denominator.

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That's your answer.

Hope this helps! :)

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3 years ago