Solve the system of equations by the substitution method.

x+y=4

y=-3x

Translate this sentence into equation twice the difference of a number and five is 9

Find two consecutive whole numbers that square root 119 lies between

A city planner wants to estimate the average monthly residential water usage in the city. He selected a random sample of 39 households from the city, which gave the mean water usage to be 3410.30 gallons over a one-month period.

70% of a number is what fraction of that number?

The Drama Club is showing a video of their recent play. The first showing begins at 3:45 p. M. The second showing is scheduled at 6:25 p. M. With a 1 2 - hour break between the showings. How long is the video in hours and minutes? Pt.

Kelly has a ribbon that is 60 inches long. She cuts off 40% of the ribbon for an art project. while working on it, she decides she only needs 75% of the piece she cut off. How much ribbon does Kelly end up using in her project

How do I find the area of a circle and the radius is 4

Ben builds custom ladders of varying heights. He uses this equation to determine the number of rungs, r, to put on a ladder that has a height of h feet. r = h : 0.

Ellie uses 27 feet of fabric to make 48 doll dresses. she uses the same amount of fabric to make each dress. How many yards of fabric did Ellie use to make each dress?

Explain how you found the answer to 706,421 rounded to 800,000