Answer:
2
Step-by-step explanation:
gradient =y² -y¹ /x²-x¹
=9-1/2--2
=8/4
=2
To simplify 4/(2+7i), we multiply it by a fraction equal to one that removes the i value in the denominator. The best value to do this is the complex conjugate divided by itself, so we have 4(2-7i)/((2+7i)(2-7i)). Simplifying, we have (8-28i)/(4-(-49))=(8-28i)/53, which is a completely simplified fraction since 8 and 53 are relatively prime (or coprime), and there are no radicals in the denominator.
Answer:
the cost of the women's haircut is $15 and to shampoo the woman's hair is $5
and the cost of the mens hair cut is $7 and to shampoo the mens hair is $2
15+5=$20 is how much it cost for the women.
7+2=$9 is how much it cost for the men.
Step-by-step explanation:
8/12 and 4/6 and10/15 and20/30 and 40/60
Captain has $30 money
Flame has $20 +$5 =$25
difference =30-25=5
Captain has $5 more money
