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goldenfox [79]
3 years ago
11

Somebody help me please

Mathematics
1 answer:
liberstina [14]3 years ago
6 0

Answer:

Step-by-step explanation:

The answer is A

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2 Gallons are needed to cover entire wall

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Select the correct answer.
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On a trip, a motorist drove 150 miles in the morning and 50 miles in the afternoon. His average rate in the morning was twice hi
Lina20 [59]

Answer:

Morning's average rate = 50 mph, and Afternoon's average rate = 25 mph.

Step-by-step explanation:

Suppose he drove 150 miles for X hours, then his average rate in the morning was (150/X) mph.

Given that he spent 5 hours in driving.

And he drove 50 miles for (5-X) hours, then his average rate in the afternoon was 50/(5-X) mph.

Given that his average rate in the morning was twice his average rate in the afternoon.

(150/x) = 2 * 50/(5-x)

150/x = 100/(5-x)

Cross multiplying terms, we get:-

150*(5-x) = 100*x

750 - 150x = 100x

750 = 100x + 150x

750 = 250x

x = 750/250 = 3.

It means he spent 3 hours in the morning and 2 hours in the afternoon.

So morning's average rate = 150/3 = 50 mph.

and afternoon's average rate = 50/(5-3) = 25 mph.

8 0
3 years ago
Jerry has a part-time job at a supermarket. The ordered pairs show the number of hours he worked for (input values) and the numb
Karo-lina-s [1.5K]

Answer:

Yes

Step-by-step explanation:

The ordered pairs are (6,72) (8,96) (5.5, 66) (9,108) (7,84).

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Let us divide the values of y by x

\dfrac{72}{6}=12

\dfrac{96}{8}=12

\dfrac{66}{5.5}=12

\dfrac{108}{9}=12

\dfrac{84}{7}=12

The fuction which defines the above ordered pairs is y=12x

It can be seen that the amount of money earned is 12 times the number of hours worked.

So, per hour Jerry earns 12 dollars.

Hence, the ordered pairs are relation.

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3 years ago
12 decreased by some number h
Nimfa-mama [501]

Answer:

12 - h

Step-by-step explanation:

5 0
3 years ago
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