Answer:
-15.96
Step-by-step explanation:
A conjugate is a binomial with the sign inside changed. So the conjugate of (1/5 + 4i) is (1/5 - 4i)
Set the original and the conjugate next to each other and F.O.I.L. Multiply the first numbers of each binomial, the 1/5 and the 1/5 to get 1/25. This is the "F."
Multiply the outer members, the 1/5 and the 4i to get - 60i. This is the "O."
Multiply the inner numbers ( the + 4i and the 1/5) to get + 60i. This is the "I."
Multiply the positive 4i and the negative 4i to get 16i squared
The positive 60i and the negative 60i cancel each other out.
The i squared changes into - 1. This makes the 16 negative.
Add 1/25 to - 16 to get - 15.96
Answer: 32.67 cm
Explanation:
Circumference = πD
Circumference = π(10.4)
Circumference = 32.67 cm
Answer:
6
Step-by-step explanation:
6+14=20
40/2+20
Answer:
Mixed fraction: 1 and 3/4
Improper fraction: 7/4
Step-by-step explanation:
Mixed: You have 1 whole circle and only three out of four pieces of an other circle
Improper: Add the colored pieces of the two circles together but because the circles are divided into fourths, the number four is the denominator or bottom number. Therefore, you get seven over four(7/4) as the improper fraction
