convert 21/40 to a percent

When number N is increased by 60% it becomes equal to number 50 decreased by 20%. Find the value of N.

Meghann drives 486 miles on the highway to visit her cousin. she uses cruise control to drive at a constant speed. Meghana travels 216 miles in the first 4 hours. At that rate, how long will the trip take?

Which function represents transforming f (x) = 3^x with a reflection over the x-axis and a vertical shift of 4 units? 3^x + 4, - 3^x + 4, 3^x-4, - 3^x+4

Here is a list of numbers. 31 29 33 37 43 38 33 40 a) Find the mode of the numbers in the list.

X^2+14=9x A) x = 2, x = 7 B) x = 3, x = 5 C) x = - 2, x = - 7 D) x = - 3, x = - 5

The function f (x) = - 3x2 + 36x - 119 written in vertex form is f (x) = - 3 (x - 6) 2 - 11. Which statements are true about the graph of f (x) ? Check all that apply. The axis of symmetry is the line x = 6. The vertex of the graph is at (-6, - 11).

200 cans of food were distributed to 3 charity homes. 2/5 of the cans were given to the first home, 1/3 of the remainder to the second home and the rest to the third home. How many cans did the third home receive?

A car dealer earns a 4% Commission on all cars sold last month he earned $7,000 in commission he wants to earn $8,000 in commission this month what increase is total sales from last month total sales does he need in order to reach a go for this

The charge for a bicylce repair was $9.28 for parts, 1/4 hour of labor at $18 per hour, and a $2 shop fee. What was the total cost (c) of the repair?

18x-16y=-312 78x-16y=408