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Irina-Kira [14]

2 years ago

10

A train travels 80 mph for 2 hours and then it travels 60 mph for 3 hours . What is its average speed over the entire 5-hour tri

p?

1 answer:

boyakko [2]2 years ago

3 0

Answer:

68 mph

Step-by-step explanation:

80 m/hr * 2 hr = 160 miles

60 m/hr * 3 hr = 180 miles

total miles / total time = average speed

340 miles / 5 hr = 68 m p h

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Using your equation from #2, how many hours did the plumber work at your home? Solve the equation from #2

jek_recluse [69]

Answer:

the answer i got was 3 which would be none of the above bc i minused 40 on both sides to get 150 then i divided 150/50 which got me 3.

Step-by-step explanation:

:) your welcome

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3 years ago

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Simplify the expression. 1.4 – 5.5 – 1.73 + 1.8 – 1.09

Lana71 [14]

The answer would be 1.4

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3 years ago

Totally cellular charges $30 for a monthly plan, with an additional .20 per text message. Gnarly Cells charges $40 for a monthly

Taya2010 [7]

Answer:

100 texts

Step-by-step explanation:

Let the amount of text messages be x. Since we are looking at making both plans equal, we add the fixed monthly charges to the number of messages multiplied by the cost.

The total amount charged by Totally will be 30 + 0.2x

The total amount charged by Gnarly will be

40 + 0.1x

Now since we are trying to get the number of text messages that make both charges equal, we equate the two charges and that is:

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5 0

3 years ago

Compare the following pair of numbers A and B in three ways. a. Find the ratio of A to B. b. Find the ratio of B to A. c. Comple

frosja888 [35]

a. 8:21

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3 years ago

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A spinner is divided into 4 equal - size sections. The sections 4 are red green orange and blue. If Joana spins the spinner twic

ycow [4]

Answer:

RR RG RO RB

GG GR GO GB

OO OR OG OB

BB BR BG BO

There are 16 possible outcomes.

Step-by-step explanation:

For this question, we combine the possibilities together.

R = red G = green O = orange B = blue

There are 16 possible outcomes.

You can also find the total number of possible outcomes by using the formula for permutations. n is the total number of choices. r is the number you are examining.

$\frac{n!}{(n-r)!}$

$\frac{4!}{(4-2)!} =12$

This number doesn't include the outcome of having the same color twice. There are four colors meaning that their four outcomes in which the same color is spun twice.

12 + 4 = 16

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3 years ago