How many oz. of a metal containing 40% nickel must be combined with 11 oz. of a metal containing 85% nickel to form an alloy containing 73% nickel?

18

step-by-step explanation:

ik this stuph and i am smart donkey

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

a = 3.14

b = 18

c = 18/5 or 3.6 or 3 3/5

step-by-step explanation:

total of apples - take away four

6-4 = 2

answer is 2 apples