tofunmi44 tofunmi44

14-10-2020
Mathematics

contestada

15. • Solve the simultaneous equations
x+3y=1
-x+y=3
A. 1 and 1
B.
1'and-2
2 and -2
D. 1 and 2
C.

Respuesta :

14-10-2020

Answer:
B. 1 and -2
Explanation:
First, add up the equations:
x-x+3y+y=4
4y=4
y=1
Now, plug y into any of the original equations above and solve for x:
-x+1=3
-x=2
x=-2
Therefore, the answer is B. 1 and -2

Answer Link

Otras preguntas

what is the answer to (12+5)×10-4

Mi hermana es talentosa. Ella _____ cuentos muy buenos y dibuja también.

The scale on your architectural drawing of a water storage tank is 1 inch to 6 feet if the tank is 3 1/4 inches tall and your blueprint how many feet high will

What did the math teacher say after spending 8 hours in the snow and ice worksheet answers with the correct letter answers.

If the concentration of glucose is increased from 0.1 M to 2.0 M, will the conductance change? Why?

What two molecules are compounds

Which best explains how Ronald Reagan’s economic message helped him win the 1980 presidential election? Many Americans agreed with Reagan, saying that taxes ne

Normal distribution models what type of variable? Random continuous variable Discrete continuous variable Random variable Discrete random variable

A 12 ft tall buildings casts an 8 ft long shadow. How long of a shadow will a 5 foot tall woman have?

What divided by what equals 12