Churchboy120122 Churchboy120122

28-02-2018
Mathematics

contestada

Substitute

-3x-8y=4
-2x+7y=15

Respuesta :

drewemiller drewemiller

28-02-2018

-2x=15-7y
x=-7.5+3.5y

-3x-8y=4
-3(7.5+3.5y)-8y=4
-22.5-10.5y-8y=4
-22.5-18.5y=4
-18.5y=4+22.5
-18.5y=26.5
y=-53/35

the fraction might not be in lowest terms.

Answer Link

Otras preguntas

General properties of matter include all but which of the following. a. Mass b. Color c. Volume d. Denstiy

What gives the author's writing about the Civil War authenticity? a. Bierce lived during the Civil War time period. b. Bierce actually fought as a soldier durin

What is the molarity of a 750.0 milliliter solution containing 2.5 moles of solute?

Why are bees important to the reproductive success of flowering plants? a) bees transport nutrients to the plant b) bees carry pollen to other plants c) bees b

Which of the following weapons helped continue the stalemate on battlefields during World War I

PLEASE HELP!! Which of the following factors influenced the decision by the United States to aid Israel during the Yom Kippur War? a. the United Nations' reques

The weights of 40 students were recorded. If the 75th percentile of their weights was 140 pounds, what is the total number of students who weighed more than 140

choose the connective that best complete the following sentence I like to play baseball -----------------, I can't throw a ball very well. A.besides B.or insta

The equilibrium vapor pressure is achieved when the rate of evaporation equals what? a. rate of sublimation b. rate of condensation c. rate of freezing d. rate

Which of the following weapons helped continue the stalemate on battlefields during World War I

ACCESS MORE EDU ACCESS