Solve by substitution

4x + 7y = 1

y = - 2x-7

John Cell bookbags. He sells a leather bag for $69.80 and the sales tax is 6% of the sale price about how much is a sales tax on the book bag?

Of the 400 doctors who attended a conference, 240 practiced family medicine and 130 were from countries outside the united states ... one-third of the family medics practitioners were not from the united states.

Write the number in standard form. 1.66*10^9

The altitude to the hypotenuse of a right triangle divides the hypotenuse into segments of lengths 6 and 9. What is the length of the altitude? A. 2004-04-01-01-00 B. 2004-04-01-01-00 C. 2004-04-01-01-00 D. 2004-04-01-01-00

When an object loses its original shape and size

Ella runs a cat rescue center. She started with 2 cats, and her center has an increase of 5 cats per year.

Round 2874992 to nearest 10000

Decide whether a discrete or continuous random variable is the best model for each of the following variables: (a) The time until a projectile returns to earth. (b) The number of times a transistor in a computer memory changes state in one operation.

The rquation of a citcle is x^2+y^2=16 what is the radius of the circle

BETH and Carley are selling candy bars to raise money for new cheer outfits. Beth has sold one less than twice the number of candy bars carely has sold. If they have 188 candy bars in all how many has Beth sold?