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LenaWriter [7]
3 years ago
7

Julina is planninf a 1224-mile driving trip. Her car gets an average of 34 mpg, and the cost of gas is about $3.56/gallon. What

is the approximate driving cost of the trip
Mathematics
1 answer:
Zolol [24]3 years ago
3 0

Julina's car can travel 34 miles with one gallon of gas, so she will need

\dfrac{1224}{34}=36

gallons of gas to make the whole trip.

Since one gallon costs $3.56, 36 gallons cost

36\times 3.56=128.16

dollars.

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Evaluate this expression: 39 ÷ (2 + 1) - 2 × (4 + 1).
Lorico [155]

Answer:

3

Step-by-step explanation:

I used the MDAS method

5 0
3 years ago
Read 2 more answers
If 10% of all machines become worthless every year (they depreciate, in other words), then how many machines will become worthle
nikklg [1K]

Answer: Country A - 10machines

Country A - 1,000machines

Country A - 10,000machine

step-by-step explanation:

Since 10℅ of all machines becomes worthless every year, let's look at each country.

If 100 machines are all the machines in country A, then 10% of all the machines in country A (i.e 100 machines) will be 10% of 100 = 10 machines.

Similarly for country B, it will be equivalent to 10% of 10000, which is equal to 1,000machines.

Same goes for country C i.e 10% of 1000000 = 10,000machines are worthless.

5 0
3 years ago
I need help with this problem.
sdas [7]

Answer:

  \text{4}\quad -3x^{-1}+x^{-2}

Step-by-step explanation:

The answer choices suggest there is a common factor of (x+2) that can be removed from numerator and denominator.

The denominator factors as ...

  x^3+2x^2=x^2(x+2)

The numerator obviously has no factors of x. We can try any of several means to determine if (x+2) is a factor. I tried synthetic division and found that the numerator can be written as ...

  -3x^2-5x+2=(-3x+1)(x+2)

Then the expression simplifies to ...

  \dfrac{-3x^2-5x+2}{x^3+2x^2}=\dfrac{(-3x+1)(x+2)}{x^2(x+2)}\\\\=\dfrac{-3x+1}{x^2}=\dfrac{-3x}{x^2}+\dfrac{1}{x^2}=-3x^{-1}+x^{-2} \qquad\text{matches choice 4}

4 0
3 years ago
Can y’all help me please
likoan [24]

Answer:

y = -4x + 60

Step-by-step explanation:

(0, 60) and (4,44)

Slope:

m=(y2-y1)/(x2-x1)

m=(44 - 60)/(4-0)

m= (-16)/4

m= -4

Slope-intercept:

y - y1 = m(x - x1)

y - 60 = -4(x - 0)

y - 60 = -4x

y = -4x + 60

8 0
3 years ago
Read 2 more answers
Which of these expressions are equivalent to -2(x-5)
grin007 [14]

Hey there!

-2(x - 5)


DISTRIBUTE -2 WITHIN the PARENTHESES

= -2(x) - 2(-5)


= -2x + 10


Therefore, your answer is: -2x + 10


Good luck on your assignment & enjoy your day!


~Amphitrite1040:)

8 0
2 years ago
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