3 years ago

How do I do this? My teacher makes these problems very confusing...

Mathematics

1 answer:

prohojiy [21]3 years ago

8 0

You substitute the equation and see if it works. Also, the first one that you answered is wrong.

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Please Help! Answer Number 4

faltersainse [42]

Answer:

1485

Step-by-step explanation:

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2 years ago

If set D is a subset of set E, then which of the following is true?

Georgia [21]

If set D is a subset of set E, it means that set E includes set D. D ∩ E = D The answer to your question is A. I hope that this is the answer that you were looking for and it has helped you.

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3 years ago

What is the answer too r2+15r+36=0

Rashid [163]

R2+15r+36=0 the answer is r=6

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3 years ago

A school has a hurdle track that is 1/5 of a mile long. They are considering extending the track to be 1/4 of a mile long. The c

Anastaziya [24]

Answer: 4/5

Step-by-step explanation:

Here, The hurdle track that is 1/5 of a mile long.

And, After extending the track, the length of the hurdle track = 1/4 of a mile

Therefore, the unit rate of length in the longer track per mile of length in the shorter track = the initial length of the hurdle track / the final length of the hurdel track

= $\frac{1/5}{1/4}$

= $\frac{4}{5}$

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3 years ago

Read 2 more answers

The sum of the speed of two trains is 722.7 miles per hour. If the speed of the first train is 3.3 mph faster than the second tr

stellarik [79]

$x-speed\ of\ first\ train\\x-3.3-speed\ of\ second\ train\\\\x+x-3.3=722.7\\x+x=722.7+3.3\\2x=726\\x=363\\\\x-3.3=363-3.3=359.7\\\\Speed\ of\ first\ train\ is\ 363 mph,\ speed\ of\ second\ train\ is\ 359.7.$

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2 years ago