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Nana76 [90]
3 years ago
15

Home heating oil is sold by the gallon. Last winter, the Romano family used 370 gallons of oil at $2.56 per gallon. If the price

increases 9% next year, what will their approximate heating expense be ? Round to the nearest ten dollars .
Mathematics
2 answers:
Ivanshal [37]3 years ago
5 0

Answer:

$1030

Step-by-step explanation:

Hope this helps

belka [17]3 years ago
4 0

Answer:

$1030

Step-by-step explanation:

Last winter:

Total expense = 370 * 2.56 = $947.2

Next year,

price increases 9% per gallon

which means, per gallon cost is $2.7904

Approx. expense = 370 * 2.7904 = $1032.448 which is round down to $1030

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Over [174]

Answer:

35 = 5 + 10x

Step-by-step explanation:

x = the ticket price.

Each ticket was $3

hope this helps :)

5 0
3 years ago
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a railroad track rises 30feet for every 400 feet of track. what is the measure of the angle of elevation of the track?
tensa zangetsu [6.8K]
It will be 0.075 the tracks
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3 years ago
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What type of triangle has side lengths 9, 10, and √130? A. obtuse B. not a triangle C. acute D. right
EastWind [94]

Answer: Option C.

Step-by-step explanation:

The lengths of our triangle are:

9, 10 and √130.

If the triangle is a triangle rectangle, by the Pitagoream's theorem we have:

A^2 + B^2 = H^2

in this case H is the larger side, this must be √130.

then:

A and B must be 9 and 10.

9^2 + 10^2 = (√130)^2

81 + 100 = 130

This is false, so this is NOT a triangle rectangle, the hypotenuse is shorter than it should be.

Now, we have some kind of rule:

 if A^2 + B^2 = H^2 then we have one angle of 90° and two smaller ones. (triangle rectangle)

 if A^2 + B^2 > H^2 then all the angles are smaller than 90°, this is an acute triangle.

 if A^2 + B^2 < H^2 then we have one angle larger than 90°, this is an obtuse angle.

(H is always the larger side, A and B are the two shorter ones).

In this case:

81 + 100 > 130

Then this must be an acute angle.

3 0
3 years ago
Evaluate 3+(−4)−8−(−1)
castortr0y [4]

Answer: - 8

Step-by-step explanation:

3+(−4)−8−(−1)

3 - 4 - 8 + 1

3 - 12 + 1

-9 + 1

- 8

4 0
3 years ago
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PLEASE HELP ME!!!!!!! WILL GIVE THANKS AND RATING!!!!!! PLEASEEEEEEEEEEEEEE!!!!!!!
EastWind [94]
2 3/4 * 3.36 / (1 2/5) 
=11/4  *  3.36 / (7/5) 
= 9.24 /  (7/5) 
= 9.24 /  1.4
= 6.6
5 0
3 years ago
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