3 years ago

Please help And be clear about you answer.

Mathematics

1 answer:

zimovet [89]3 years ago

7 0

I'm not 100% sure on this. I think it's 23.

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8i-(12-4i)+7√-9<br><br> show work please

Tanya [424]

Answer:

33i - 12

Step-by-step explanation:

$8i - (12 - 4i) + 7 \sqrt{ - 9} \\ = 8i - 12 + 4i + 7 \sqrt{9 \times ( - 1)} \\ = 12i - 12 + 7 \times 3 \sqrt{ - 1} \\ = 12i - 12 + 21i \: \: ( \because \sqrt{ - 1} = i)\\ = 12i + 21i - 12 \\ \therefore \red{ \bold{8i - (12 - 4i) + 7 \sqrt{ - 9} }= \purple{ \bold{33i - 12}}}$

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3 years ago

It takes Sara 1/2 day to make a birdhouse. How much of the birdhouse will be built after 2/5 day?

hram777 [196]

Answer:

80%

Step-by-step explanation:

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2 years ago

A science test, which is worth 100 points, consists of 24 questions. Each question is worth either 3 points or 5 points. If x is

Brilliant_brown [7]

The solution to the system of equations is (x, y) = (10, 14), where x is the number of 3-point questions and y is the number of 5-point questions. The appropriate choice is ...
The test contains 10 three-point questions and 14 five-point questions. (2nd selection)

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3 years ago

Maria studied the traffic trends in India. She found that the number of cars on the roads increases by 10% each year. If there w

laiz [17]

You would do

(1.1)(80,000,000)=88,000,000

That is the total cars for year two. To find the increase you would do

(1.1)(88,000,000)=96,800,000

Then you would subtract year 2 from year three

96,800,000-88,000,00=8,800,000

That gives you ur answer.

7 0

3 years ago

Read 2 more answers

What is the domain of the function y=tan(x/8)?

ehidna [41]

Answer: well i think it is B

Step-by-step explanation:

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2 years ago