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RoseWind [281]
3 years ago
5

Add (-5+2i) +(3+4) please answer this and you’ll receive 100 pts

Mathematics
1 answer:
makvit [3.9K]3 years ago
6 0

Answer:

2+2i

Step-by-step explanation:

(-5+2i)+(3+4)

-5+3+4+2i

-5+7+2i

2+2i

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Why does (x-2)^2+9=0 have no real solutions?
alex41 [277]

Answer:

see explanation

Step-by-step explanation:

Given

(x - 2)² + 9 = 0 ( subtract 9 from both sides )

(x - 2)² = - 9  ( take the square root of both sides )

x - 2 = ± \sqrt{-9}

\sqrt{-9} yields no real solutions

There is no real number when multiplied by itself gives - 9

In fact the solutions to \sqrt{-9} are said to be imaginary, that is ± 3i

where i = \sqrt{-1}

If interested investigate further.

7 0
3 years ago
using the midpoint formula, solve for the midpoint of the segment with these pairs of endpoints (-8,21) and (32,-2)​
dusya [7]

Answer

(24,9.5) using the midpoint formula

5 0
3 years ago
Read 2 more answers
Doug sold 125 sandwiches to raise money for his boy scout troop. 80% of those sandwiches were sold in his neighborhood. How many
grigory [225]

Answer:

Doug sold 100 sandwiches in his neighborhood.

Step-by-step explanation:

To solve for percentage you have to first find the percentage's decimal. To find this you have to the move the decimal point up to places. This makes 80 into 0.8. After you do this you will mutiply that but the total amount. So 125 times 0.8. Once you do this you should get 100. This means that Doug sold 100 sandwiches in his neighborhood.

4 0
3 years ago
Ms. Federman graded 5 papers in 40 minutes. At this rate, how many minutes will it take her to grade 30 papers?
Ksivusya [100]

Answer:

240 minutes

Step-by-step explanation:

If it's 40 minutes for just 5 papers, we need to figure how many minutes it would take to grade just 1. So you have to divide 40 by 5 which is 8. Then 8 time 30 which is 240.

4 0
3 years ago
6th grade math help me, please :))
Gelneren [198K]

Answer:

\sf a) \ 2.5\\b) \ 7.5

Step-by-step explanation:

\displaystyle \frac{250}{100}

\sf Express \ as \ a \ decimal.

=2.5

\sf Multiply \ 3\% \ with \ 250.

\displaystyle 250 \times \frac{3}{100}

\displaystyle \frac{750}{100}=7.5

5 0
3 years ago
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