If a train travels between two cities in 3 hours at an average speed of 65 miles per hour how long it take at an average speed of 80 miles per hour

14. what temperature is 12 degrees lower than - 3 celsius 15. In a group of 60 children, there are three times as many boys as girls. How many girls are there? 16. If x=5, calculate the value of: 2x² + x

3/8 to 7/8 find the percent of change and is it decrease or increase

Simplify 218.9 multiplied by 0.0031

Perpendicular lines have slopes that are what

When 19 is added to one-quarter of a number, the result is 40. What is the number?

The standard form of the equation of a parabola is x = y2 - 4y + 20. What is the vertex form of the equation? A. x = (y - 4) 2 + 4 B. x = (y - 2) 2 + 16 C. x = (y - 2) 2 + 4 D. x = (y - 4) 2 + 12

Can somebody explain how to convert fractions with different denominators to fractions with the same denominator

There are 6 boys and 8 girls in a singing group. what fractional part of the group is girls

Is the relation a function? { (14, 9), (15, 8), (8, 7), (1, 9), (15, 2) }

What is 2.685 rounded to the nearest hundredths place