Mathematics: The formula d= rt gives the distance traveled in time t at rate r. A bicyclist rides for 1.5 hours and travels 25 miles. what is the average rate of speed? A. 26.5 miles per hour B. 16.7 miles per hour C. 23.5 miles per hour D. 37.5 miles per hour

The formula d= rt gives the distance traveled

u8p4

07.02.2022

Using then given formula replace the letters with the given information.

25 miles = r x 1.5 hours

To find r divide both sides by 1.5:

R = 25/1.5

R = 16.7 miles per hour

The answer would be B.

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yasyyas646646

21.01.2021

50x⁴ - 20x² + 1 = 0

1. Quadratic form

50(x²)² - 20x² + 1 = 0

2. U is

x² = u

3. U- substitution

50u² - 20u + 1 = 0

4. Find the discriminant and identify roots

d = (-20)² - 4*1*50 = 200u = (20 ± √200)/100u = (2 ± √2)/10

Solve for x

x² = (2 ± √2)/10x = ± √((2 ± √2)/10), four roots

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