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natali 33 [55]
4 years ago
5

PLEASE HELP ASAP 25 PTS + BRAINLIEST TO RIGHT/BEST ANSWER

Mathematics
1 answer:
dolphi86 [110]4 years ago
8 0

Answer:

1-7i

Step-by-step explanation:

Multiply the parenthesis

-3-4i-3i-4i²

By Definition i²=-1

-3-4i-3i-4 x (-1)

Any expression multiplied by -1 equals its opposite

-3-4i-3i+4

Calculate the sum

1-4i-3i

Collect like terms

1-7i

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This math question i really dont get..
MA_775_DIABLO [31]
Diagram below

ok so what you do is find area of total-areapond=areaaround
then times that by the height

areatotal=pir^2
r=7.5+2=9.5
aeratotal=pi9.5^2=90.25pi

areapond=pi7.5^2=56.25pi

areaaround=90.25pi-56.25pi=34pi

volume=area times height
34pi m^2
15 cm thick
convert 15cm to m
0.15m
34pi times 0.15=5.1pim^3=16.02m^3

volume=16.0 m^3
if converted to cm
v=16022122.5 cm^3

5 0
3 years ago
You have a car worth $3,200. You owe $1,400 on the loan. You also owe $320 on a credit card. How much are your total liabilities
geniusboy [140]

Answer:

since liabilities means- "the state of being responsible for something, especially by law." you would have to pay 1720$ and sell the car.

Step-by-step explanation:

4 0
3 years ago
In the figure below, the measure of <br> True<br> False
Yuki888 [10]

Answer:

The answer to this is true because they are open at the same angle

5 0
3 years ago
Read 2 more answers
How to find angle measurements of a triangle when given equations?
krek1111 [17]
This is an example
Hope this helps

8 0
4 years ago
IM BEGGING PLZ! I’ll mark brainliest! Plz!
Free_Kalibri [48]

Answer:

Step-by-step explanation:

SOHCAHTOA

Sine is opposite over hypotenuse

Cosine is adjacent over hypotenuse

Tangent is opposite over adjacent

In this context, opposite means the side opposite of the angle. Adjacent means the side that is touching the angle. And the hypotenuse is the longest side, which is usually visually obvious.

3.) tan(25) = x/31

Use a calculator for tan(25), then multiply both sides by 31 to get your x value.

x = 14.5

4.) cos(48) = 17/x

Use a calc to do 17/cos(48) to get the x value

x = 25.4

5.) sin(theta) = 17/18

Divide 17/18, then take the inverse sine of both sides with a calculator to get the theta value

theta = 70.8 degrees

6.) tan(theta) = 31/42

Divide 31/42, then take the inverse tangent of both sides with a calc.

theta = 36.4 degrees

7.) Your best bet is to draw a picture. For my case, Im going to imagine it. The angle is 35 degrees and the hypotenuse is 300 feet. The question is asking for the opposite of the angle. This calls for sine.

sin(35) = x/300

x = 172.1 feet

8 0
3 years ago
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