joanna93 joanna93

02-12-2019
Mathematics

contestada

1) 3х + 8 y = 30
бx +7y = 6

Respuesta :

naythankyouboi naythankyouboi

02-12-2019

Multiply the first equation my 2 and than subtract the two equations to eliminate x

6x+16y=60-
6x+7y=6
9y=54
Y=6
Then plug in y to one of the equations
6x+7(6)=6
6x+42=6
6x=-36
X=-6

X=-6 Y=6

Answer Link

Otras preguntas

You have 535 g of Zinc Chloride, ZnCl2. How many moles is this?

Micah wants to know the height of his school he places a small mirror on the ground between himself and the school then he backs up until he can see the highest

Joel made egg sandwiches and tuna sandwiches in the ratio 2:3. He then made 15 more tuna sandwiches and the ratio changed to 1:3. How many sandwiches did Joel m

Simplify: (−2)3 · (−2)4 A) (−2)12 B) (−2)7 C) 212 D) 27

Solve the problem using the guess-and-check method. It takes 6 boxervillians to change a light bulb, and there are 84 boxervilians at a light bulb-changing par

a cd usally sells for 17.00 if the CD is 30% off and the sales tax is 8% what is the total price of the CD including tax

an experiment was done to determine if the rate at which an egg cooked depended on the temperature of water in which was boiled .what is the independent variabl

The planet Pluto is 39.5 AU’s from the sun.How long does it take to go around the sun once.

Which of the following is not a primary function of dietary protein? A. Regulating metabolism and fluid balance B. Building new cells and tissues

please revise this paragraph. Combine two or more sentences in your paragraph for varied syntax. _____Review your paragraph for any use of passive voice. Revise