An equivalent equation has been written by multiplying the second equation by 2.

4x - 9y = 7 → 4x - 9y = 7

2 (-2x + 3y = 4) → - 4x + 6y = 8

What is the solution to the system?

a. (-19/2, - 5)

b. (-5,-19/2)

c. (-15/2,-11/3)

d. (-19/10,1/15)

Solve. -13 = - 7 + v A. -20 B. -6 C. 6 D. 20

If f (x) = 4x^2+1 and g (x) = x^2-5 find (f-g) (x) A. 3x^2+6 B. 3x^2-4 C. 5x^2-4 D. 5x^2-6

Erica and Matt earn the same amount of money each month. Erica saves 3/10 of her earnings. Matt's saves 3/6 of his earnings. Which explanation correctly tells who saves more?

Why does it take 4 copies of 1 tenth to equal 2 copies of 1 fifth?

A particular type of bacteria grows at a rate of 21 % per day. If my hyena got infected with 2300 bacterium when his leg was cut by barbed wire, how many bacterium will be present in 10 days when I finally decide I need to take the hyena to the

The figure is composed of 2 congruent triangles and a rhombus.

Carla has a credit card that uses the average daily balance method. For the first 15 days of a 31-day billing cycle, her balance was $2560, but then she paid off her entire balance and didn't make any new purchases.

The expression x^2 + x + b is a perfect square trinomial. What is the value of b?

Solve the equation by factoring: 3x^2 + 22x - 16 = 0

If a 10 foot piece of electrical tape has 0.037 feet cut from it, then what is the new length of the tape?