Roy is correct. When you multiply fractions, you multiply the numerator of one fraction and the other numerator of the other fraction, and vice versa for denominator.
7 x 3 = 21 (Numerators)
——- —-
3 x 8 = 32 (Denominators)

I hope this helped!

3 0

3 years ago

Convert the polar representation of this complex number into its rectangular form: z=4(cos120 + isin 120)

Yakvenalex [24]

Answer:

The answer is D

Step-by-step explanation:

took the test

8 0

3 years ago

a scientist has two solutions which she has labeled solutions A and solution B each contains salt. she knows that solution A is

loris [4]

Answer

Let x = the number of ounces of Solution A

Let y = the number of ounces of Solution B

x + y = 180 y = 180 - x

.60x + .85y = .75(180)

.60x + .85y = 135 Multiply both sides of the equation by 100 to remove the decimal points.

60x + 85y = 13500

60x + 85(180 - x) = 13500

60x + 15300 - 85x = 13500

-25x = -1800

x = 72ounces

y = 180 - 72

y = 108 ounces

6 0

3 years ago