2
3
4
01:40:47
Which shows the correct substitution of the values a, b, and c from the equation 0 = 4x2 + 2x – 1 into the quadratic formula
below?
Quadratic formula: x= -b IV b2 - 4ac
20
x = -2 +222-414) – 17
204)
-2 + √2² - 4(4) (2)
264
-2+√2² +4 (4) (-2)
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isi

step-by-step explanation:

use that smart brain

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

ratio is 2 : 9

the answer is three

13.5 : 3