Solve the system of equations.

3x + 2y + 4z = 7

4x + 3y + 5z = 9

7x + 4y + 7z = 5

a (x = - 5, y = 3,2 = 4)

b. (x = - 6, y = 4, z = 5)

c. (x = - 3, y = 1, z = 6)

d. (x = - 4, y = 2, z = 3)

Five less than a product of a number and 3 is 14

Twenty cars go past your house during a 5-minute period. At that rate, how many cars will go past your house during a 15-minute period?

X+2y=200 x=y+50 find the substitution

A regression analysis can be used to determine a. if a linear relationship exists between two categorical variables. b. a cause-and-effect relationship between two variables. c. if the difference in the population means may be zero. d.

Grammy gave the server $15 tip. If the tip was 20% of the cost of dinner, how much was dinner

Is it more efficient to solve - 3x+y=1 for x? why or why notes

How many cups is in 1 liter

Together sarah and max brought in 24 cookies to share with the class. Sarah brought in 7 cookies. Write an equation to find out how many cookies brought in.

Add one set of parentheses to the expression 2x2 + 4 - 5 so that the value of the expression is 75 when x = 6.

Kim took C dollars to the sporting goods store to spend on new cleats. If the cleats cost $42.97, which of the following expressions represents the number of dollars Kim will have after buying the cleats? A. 42.97- B. C + 42.97 C. 42.97 + c D. C-42.