WILL GIVE BRAINLIEST AND 30 POINTS! Simplify −3 +i over 7 + i . First, multiply both the numerator and denominator by A. -3 + i B. -3 -i C. 7 + i D. 7-1 Hint: C is incorrect.

You have (-3 +i)/(7 + i) so you need to remove the i from the numerator, so you have to multiply by 7-i and you get

(-22 + 4i)/50 which can be simplified to

(-11 + 2i)/25

Step-by-step explanation:

What you are trying to do in this question is get rid of the i in the denominator. To do that you must multiply top and bottom by the conjugate of 7 + i

The conjugate is 7 - i

D if correct if you just made a typo. Otherwise there is no answer.

( - 3 + i ) * (7 - i)

(7 + i ) ( 7 - i)

( - 3 + i ) * (7 - i)

49 - i^2

( - 3 + i ) * (7 - i)

49 + 1

( - 3 + i ) * (7 - i)

50

I'll let you work out the numerator. If you get (-2 + i)/5 you are correct.

answer: the answer is 35%

the thermometer is precise but not accurate

step-by-step explanation: