Antoniokamp Antoniokamp

10-01-2017
Mathematics

contestada

Which value of x satisfies both -9x + 4y = 8 and -3x − y = 4?
a.-1/7
b.-7/9
c.-8/7
d.-9
e.-4/3

Respuesta :

apologiabiology apologiabiology

10-01-2017

cancel y values
multiply 2nd equation by 4 and add to first

-9x+4y=8
-12x-4y=16 +
-21x+0y=24

-21x=24
divide both sides by -21
x=24/-21
x=-8/7

C is answer

Answer Link

Otras preguntas

Please Help Meeeeee, Amanda's house is due west of Stamford and due south of Newport. Stamford is 12 kilometers from Amanda's house and 13 kilometers from Newpo

Labco Scientific sells high-purity chemicals to universities, research laboratories, and pharmaceutical companies. The company wants to invest in new equipment

PLEASE HELP! I need help in order to pass this class!

Which solid figures do NOT have a vertex or vertices prisms pyramids cylinders cones

Modeling with Inverses I'm confused with this whole section in this unit activity on my online class This is Half of the page

"VWth enchanting murmurs Daisy admired this aspect or that of the feudal silhouetteagainst the sky, admired the gardens, the sparkling odor of jonquils and the

-Plz Help Meh- Calculate the acceleration of a car if the force is 450N and the mass is 1300kg.

find the total number of unit cubes that fill the entier prisem

ma1015P week 3 assignment

sorry theres 3 more after this its all urgent