3 years ago

Simplify: (7+4i)+(-4+5i)+(4+7i) a)15+6i b)3+9i c)7+16i d)-1+2i

Mathematics

1 answer:

Kay [80]3 years ago

8 0

Answer:

i strongly believe the answer is (c)

Step-by-step explanation:

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Vadim26 [7]

Answer:

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Step-by-step explanation:

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4 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

In the figure, x:y = 2:3 and y:z = 3:5. If x = 10, find the value of z. 15 20 25 30

Solnce55 [7]

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3 years ago

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noname [10]

Answer

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Step-by-step explanation:

*Snarls at my own stupidity*

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3 years ago

At the beginning of the school year, the 7th grade class at Oak Hill Middle School has 480 students. There are 270 girls and 210

Dimas [21]

Answer:

Part 1: 43.75%

Part 2: 44.07%

Step-by-step explanation:

Hello!

(Pt.1) First, set up a ratio $210/480$ . Next, you use long division I got the percent 43.75. After that, you subtract 6 from the girls group, (because of them moving away and then more coming back.) and 2 from the boys group. Then, you subtract those from the school "population" and you get 472 as the final population. So then you set up another ratio, $208/472$ . I got a percent of 44.07% from that.

Thanks For Reading!

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3 years ago