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erma4kov [3.2K]
3 years ago
6

Which expression is equivalent to (-2+4i)+(1-7i)-(-8+5i) -7i -i 7-8i -9+2i

Mathematics
1 answer:
vichka [17]3 years ago
6 0
7-8i

Add -2+1+8=7
Add 4i-12i= -8i
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A tower that is 111 feet tall casts a shadow 126 feet long. find the angle of elevation of the sun to the nearest degrre
Sergeeva-Olga [200]
The angle here is an acute angle at ground level.  Then the side adjacent to this angle is 126 feet.  The opp. side is the tower, 111 feet tall.

Then   

tan theta = opp / adj = 111 / 126.  Using the inverse tangent function, we find that the measure of the angle is 0.722 radian or 41 degrees (to the nearest degree).
3 0
2 years ago
4,567.89
In-s [12.5K]

Answer:

I got 40210.1

Step-by-step explanation:

4,567.89+7,894.56=12462.45

12462.45+1,232.45=13694.9

13694.9+1,474.10=15169

15169+2,585.20=17754.2

17754.2+3696.36=21450.56

21450.56+3,214.56=24665.12

24665.12+6,545.65=31210.77

31210.77+7,898.78=39109.55

39109.55+1.100.55=40210.1

5 0
2 years ago
Please help serious answers only
pishuonlain [190]
90-7x3

90-21=69

Ther you go have a great day
6 0
3 years ago
Read 2 more answers
Which fraction is equivalent to 50%? (in simplest fraction form) A) 1 2 B) 1 4 C) 2 5 D) 4 5
Tatiana [17]

Answer:

1/2 is equivalent to 50%

Step-by-step explanation:

In order to convert a fraction to a percentage you divide the numerator (Top number of a fraction) by the denominator (Bottom number of a fraction), multiply by 100, and add a percentage sign.

So lets try that with our first answer option A) 1/2:

1 divided by 2 = 0.5

0.5 x 100 = 50

50%

So we know that 1/2 is equivalent to 50%

8 0
2 years ago
I need some help please
MariettaO [177]
Ok so what you will do is 3-18 then you will add 1 and make is to 400X1
4 0
2 years ago
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