emarissawillett emarissawillett

09-01-2020
Mathematics

contestada

-3×+7y=5
-8×+14y=-10
By elimination

Respuesta :

dnnshrzh dnnshrzh

09-01-2020

-3x+7y=5 (x2) -> -6x+14y=10

-6x+14y=10
-8x+14y=-10
——————— -
2x=20
x=20/20
x=1

Susbstitute x=1,

-8x+14y=-10
-8(1)+14y=-10
-8+14y=-10
14y=-10+8
14y=-2
y=-2/14
y=-1/7

I hope it helps

Answer Link

Otras preguntas

"Giant Swing", the seat is connected to two cables as shown in the figure (Figure 1) , one of which is horizontal. The seat swings in a horizontal circle at a

Calculate the vapor pressure lowering on an aqueous solution of glycerin that contains 180g of glycerin and 1000g of water at 25c. The vapor pressure of water a

Three boxes are stacked one on top of the other. One box is 3 feet 7 inches tall, one is 3 feet 10 inches tall, and one is 4 feet 9 inches tall. How

Explain Why s-32 is a stable nuclidle

ASAP HELP FOR NUMBER 13!! 13a, b, c, and d!! CORRECT ANSWERS PLS THANK U GUYS SO MUCH!!!

Consider the equation y = 14 – 2x. with y on the vertical axis and x on the horizontal axis, the horizontal intercept of this line is

The length of a rectangle is the square root of 100 times an unknown number, x. The width is one-half an unknown number, y, less three-halves x. If the area of

The term muckrakers refers to progressive era journalists who were known for

Solve each equation. Check your solution. 3 1/10s = 6 1/5 = ? 2 2/9 = -4/5m = ? -2 4/5 = -3 1/2n = ?

How can a non living thing have an ecological footprint