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Pachacha [2.7K]
2 years ago
9

Donald Duck's car gets 30 miles per gallon. How many miles can he drive on 9.2 gallons of gas? At $ 2.19 a gallon, how much woul

d that cost?
Mathematics
1 answer:
Vinil7 [7]2 years ago
5 0

Answer:

276 miles, $ 20.148

Step-by-step explanation:

Given:

Donald Duck's car travels in 1 gallon gas = 30 miles

Cost of 1 gallon = $ 2.19

Question asked:

Distance travel in 9.2 gallons = ?

Cost of 9.2 gallons of gas = ?

Solution:

By applying unitary method:

His car travels in 1 gallon = 30 miles

His car will travel in 9.2 gallons = 9.2\times30

                                                    =  276 miles

Cost of 1 gallon = $ 2.19

Cost of 9.2 gallons = 9.2\times2.19

                                = $ 20.148

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jekas [21]
Eq. 1 .10x + .25y = 9.45
Eq. 2 x + y = 60 rewrite as x = 60 - y and substitute into equation 1.

.10(60 - y) + .25y = 9.45
6 - .1y + .25y = 9.45
6 + .15y = 9.45
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y = 23
60 - 23 = 37

23 quarters
37 dimes


23* .25 = 5.75
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7 0
3 years ago
(m-3)/(7)=(m)/(m+8) Solve the proportion.
ExtremeBDS [4]

Answer: m=6, m=-4

Step-by-step explanation:

To solve this proportion, we have to cross multiply.

\frac{m-3}{7} =\frac{m}{m+8}

(m-3)(m+8)=7m

Now that we have cross multiplied, we actually need to FOIL the left side to expand the equation.

m^2+8m-3m-24=7m

Combine like terms.

m^2+5m-24=7m

We can move all terms to one side and then solve for m.

m^2-2m-24=0

We can actually factor this to:

(m-6)(m+4)=0

We set each factor equal to 0 to find m.

m-6=0

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6 0
3 years ago
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GenaCL600 [577]
The answer is 4/5 because if u plus then splash then pool
3 0
3 years ago
20 POINTS HURRY PLEASE
irina1246 [14]

Answer:

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Step-by-step explanation:

15² = 12² + 8²

225 = 144 + 64

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4 0
3 years ago
Read 2 more answers
3. If a triangle has a height of 12 inches and a base of 5 inches, what's its area?
Mrac [35]

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60/2=30 .

4 0
3 years ago
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