3 years ago

Need help solving this precalculus question. Will mark brainliest

Mathematics

1 answer:

LuckyWell [14K]3 years ago

5 0

The answer is -5/4
If you want the steps, just ask me in the comments. I hope this helps!

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Rama09 [41]

Answer:

Where is the picture?

Step-by-step explanation:

Have a great day

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3 years ago

A student received a 75% on an exam. If there were 20 questions on the exam, which ratio would show the number of questions answ

Agata [3.3K]

75%=¾
¾*20=15

He answered 15 questions correctly.

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3 years ago

Read 2 more answers

khanya builders are paid R480 for 8 hours of work,whiles rex builders are paid R660 for 12 hours of work.which company is paid t

kiruha [24]

Answer:

khanya pays higher

Step-by-step explanation:

You have to find the $/hr ratios:

khanya's is 480/8->$60/hr

rex's is 660/12->%55/hr

Khanya pays the higher rate

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3 years ago

After painting the fence steve and janet realize that their house also needs painting. But steve will have to do the painting hi

gladu [14]

Answer:

Therefore, Steve will paint house for 20.6 days.

Step-by-step explanation:

We know that Steve determines that it would take them 9 days to paint the house together (if they were both healthy) and that it would take Janet (when healthy) 16 days to paint the house alone.

We conclude that in 1 day Janet painted 1/16 of the house. In nine days, Janet painted 9/16 of house.

So, 7/16 of house paint Steve in nine days.

We have the following proportion:

$\frac{7}{16}:9=1:x\\\\\frac{7}{16}x=9\\\\x=9\cdot \frac{16}{7}\\\\x=20.6$

Therefore, Steve will paint house for 20.6 days.

4 0

3 years ago

An investment in a savings account grows to three times the initial value after t years. If the rate of interest is 5%, compound

RideAnS [48]

3p=pe^0.05t
3=e^0.05t
T=(log(3)÷log(e))/0.05
T==21.97 years

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3 years ago