justarandomgirll justarandomgirll

08-12-2020
Mathematics

contestada

Solve the simultaneous equations:

5x + 3y = 9
7x - 2y = 25

x=
y=

Respuesta :

saranassirismail saranassirismail

09-12-2020

Answer:

x= 3, y= -2

Step-by-step explanation:

5x+3y= 9

x= 25÷7 + 2÷7 y

5(25÷7 +2÷7 y)

5( 25÷7 +2÷7 y ) + 3y= 9

y= -2

x= 25÷7 + 2÷7 x (-2)

x= 3

Answer Link

Otras preguntas

The raw materials that the United States produced more of during World War II than any other country were guns and bombs. oil and steel. aluminum and iron. helm

If you are given the endpoints of the diameter of a circle, which equatior can you use to find the center?

hello I would like some help with this problem if possible

Under which temperature and pressure would helium behave most like an ideal gas? A) 40 K and 0.2 atm B) 40 K and 5.0 atm C) 600 K and 0.2 atm D) 600 K and 5.

Which of the following belief systems are examples of Dharmic religions? A. Christianity and Judaism B. Christianity and Hindusim C. Buddhism and Islam D. Buddh

A 50.0 mL sample containing Cd 2 + and Mn 2 + was treated with 50.0 mL of 0.0400 M EDTA . Titration of the excess unreacted EDTA required 19.5 mL of 0.0270 M Ca

What population problem is India facing, and what are the consequences of this situation?

(pls hurry)This cylinder is cut by the plane shown. The plane is parallel to the base of the cylinder. What is the shape of the cross-section?

2. If you are up late studying for a test, which of the following foods are you most likely to crave?

The mass of the sphere is 800 lbs. Find the density of the sphere to the nearest tenth. answer choices 7.8 lbs/ft3 21.2 lbs/ft3 28.3 lbs/ft3 7.1 lbs/ft3