rooksmichelle3 rooksmichelle3

13-02-2020
Mathematics

contestada

Solve each system of linear equations by elimination. 5x-y=7 4x+8y=-12

Respuesta :

ghanami ghanami

14-02-2020

Answer:

Step-by-step explanation:

hello :

5x-y=7....(*)

4x+8y=-12...(**)

multiply (*) by 8 : 40x-8y =56 ...(***)

add(**) and (***) : 44x = 44 so : x = 1

put this value in (*) : 5(1)-y = 7

y = 5-7 = -2

Answer Link

Otras preguntas

For the next 6 years, you plan to make equal quarterly deposits of $600.00 into an accountpaying 8% compounded quarterly. How much will be the total you have at

Michael is busy with project work that he brought home. His son, Stephen, wants him to put a movie in the DVD player. Michael tells him to wait for 10 minutes,

did you board exam finish my is not over i am still having 1 more exam to over my exams will get over in 18-March-2020[tex]\left[\begin{array}{ccc}1&2&

Which substance is a pure substance? Cereal Silver Jelly bean Shampoo

If the sphere shown above has a radius of 10 units then what is the approximate volume of the sphere

34. Suppose that g is a function from A to B and f is a function from B to C. Prove each of these statements. a) If f ◦g is onto, then f must also be onto. b) I

need help is for tomorrow ASAP

What are the zeros of x2−3x+2

Jamela is driving home from work in a car. At time t (measured in minutes) her distance from home (measured in miles) is given by . At the same time, Yujin is

While looking at some seawater through your microscope, you spot the egg of an unknown animal. Which of the following tests could you use to determine whether t