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Vedmedyk [2.9K]
3 years ago
5

(3+2i)+(5+7i) equals

Mathematics
1 answer:
dlinn [17]3 years ago
6 0
I simplify so is 

8+9i
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Pls pls help <br> Perform the indicated operations.<br> a) 7a/20b<br> b) 7ab/20<br> c) 7/20ab
Elina [12.6K]

Answer:

it's a) 7a/20b

Step-by-step explanation:

5( \frac{a + 2}{4b} ) - 2( \frac{a - 1}{10b} ) + 4( \frac{a - 3}{5b} ) \\  \\  \frac{5a + 10 - 2a + 2 + 4a - 12}{20b }  \\  \\  \\  \frac{7a}{20b}

8 0
3 years ago
Can i get some help and a good explenation
denis-greek [22]

Answer:

The correct answer is $2,50

Step-by-step explanation:

The unit rate is what we use to determine the price of a single unit, when something is sold in a group, as in this case 5 ounces.

4 0
3 years ago
Read 2 more answers
the sales tax rate in a city is 8%. Find the sales tax charged on a purchase of $800. Then find the total cost.
Svetradugi [14.3K]
64 dollars is the tax, the total cost would be $864.
Use this for percentages.
https://percentagecalculator.net/

7 0
3 years ago
2^x + 3^y = 9<br>2^x+1 - 3^y+1=8<br>find x and y​
Taya2010 [7]

Suppose :

2^x = t ..**&**.. 3^y = u

_____________________________

t + u = 9 × 3 3t + 3u = 27

=====》

2t - 3u = 8 2t - 3u = 8

+ __________

5t = 35

5 × t = 5 × 7

t = 7

&

u = 2

________________________________

Thus :

2^x = 7 ===》 x = Log _ 2 { 7 }

3^y = 2 ===》 y = Log _ 3 { 2 }

8 0
3 years ago
Please answer ASAP it’s really important please
bazaltina [42]

Answer:

Letter A.

Step-by-step explanation:

0 is not divisible, so the last the last two alternatives are impossible.

The second one doesn't work, so I'd stick to letter A.

6 0
3 years ago
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