What is the sum of the complex numbers (5+7i)+(-2+6i)

3 + 13i

Step-by-step explanation:

1. (5+7i)+(-2+6i)

Remove parentheses

2. 5+7i-2+6i

Subtract

Collect the like terms

3. 5-2+7i+6i

4. 3+13i

Hope this helps!!!

please mark as brainliest:)

21.4 i did it already for s1

step-by-step explanation:

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!