3 years ago

The sum of a number and 9 is -30

Mathematics

1 answer:

GrogVix [38]3 years ago

4 0

-39+9=-30

-39 is your answer.

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3 years ago

If gasoline costs 1.50 euros per liter it will cost how much to drive 220 kilometers

jok3333 [9.3K]

Answer:

$11.79\ euros$

Step-by-step explanation:

<u><em>The complete question is</em></u>

Suppose that a new fuel-efficient European car travels an average of 28 kilometers on 1 liter of gasoline. If gasoline costs 1.50 euros per liter, how much will it cost to drive 220 kilometers ?

step 1

using proportion

Find out the number of liters of gasoline needed for 220 kilometers

$\frac{28}{1}\ \frac{Km}{L}=\frac{220}{x}\ \frac{Km}{L}\\\\x=220/28\\\\x=7.86\ L$

step 2

Find the cost to drive 220 kilometers

Multiply the cost of one liter of gasoline by the total liters of gasoline needed to travel 220 Km

$1.50(7.86)=11.79\ euros$

6 0

3 years ago

Simplify 9/12 into simplest form

Kryger [21]

Both 9 and 12 can be divided by 3.
Divide both 9 and 12 by 3.
9/3=3 12/3=4
9/12=3/4
3/4 is the simplest form of 9/12

4 0

3 years ago

Read 2 more answers

What is 2/5 of 365. Need help.

Triss [41]

One really easy way to solve problems like this is multiply by the top number then divide by the bottom number.

365*2= 730
730/5= 146

4 0

3 years ago