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Bas_tet [7]
2 years ago
11

A racing car used 255 litres of fuel to complete a 340km race.on average,how many litres of fuel did the car use every 100km?

Mathematics
1 answer:
KIM [24]2 years ago
5 0
X=(255÷340)×100
x=0.75×100
x=75
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Please help with 11,12,13
faltersainse [42]

Problem 11

<h3>Answer:  h = 2A/b</h3>

------------------

Explanation:

We need to get h by itself. To do so, we first multiply both sides by 2. Then we divide both sides by b

A = (1/2)*b*h

2A = b*h

b*h = 2A

h = 2A/b

================================================

Problem 12

<h3>Answers:</h3>
  • Equation:   (n+2)/5 = 14
  • Solution to that equation:  n = 68

------------------

Explanation:

The number n is increased by 2 to get n+2

Then we divide by 5 to get (n+2)/5

This is set equal to 14 to get the equation (n+2)/5 = 14

Solving the equation would look like this

(n+2)/5 = 14

n+2 = 5*14 .... multiply both sides by 5

n+2 = 70

n = 70-2 .... subtract 2 from both sides

n = 68

================================================

Problem 13

<h3>Answer: Not a solution</h3>

------------------

Explanation:

We'll replace every copy of x with -3 and simplify

-2x + 5 > 13

-2*(-3) + 5 > 13

6 + 5 > 13

11 > 13

The last inequality is false because 11 is not greater than 13. Since the last inequality is false, this makes the first inequality false when x = -3.

Therefore, x = -3 is not a solution.

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2 years ago
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grigory [225]

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Step-by-step explanation:

6 0
3 years ago
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statuscvo [17]

Answer:

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Step-by-step explanation:

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2 years ago
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Answer:

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Step-by-step explanation:

<u>Given the following data;</u>

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Total tuition and book = $5,500 * 2 = $11,000

Total tuition and book cost = $11,000

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There are 12 months in a year, in 2 years = 12 * 2 = 24 months.

Thus, total on transportation = $100 * 24 = $2,400

Total transportation cost = $2,400

Overall \; cost = Total \; tuition \; and \; book \; cost + Total \; transportation \; cost

Substituting into the above equation, we have;

Overall cost = $11,000 + $2,400

Overall cost = $13,400.

<em>Hence, Lakita's education will cost her $13,400 in total.</em>

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Answer:

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