dominiquea dominiquea

03-03-2020
Mathematics

contestada

Solve by using substitution. SHOW YOUR WORK. y=-2x – 1
y = 8x + 19

Respuesta :

SilvanaMartins SilvanaMartins

03-03-2020

Answer: x= -2; y = 3

Step-by-step explanation:

y=-2x – 1

y = 8x + 19 -

replacing "y"

-2x – 1 = 8x + 19

-2x - 8x = 19 + 1

-10x = 20

x = 20/-10

x= -2

y=-2x – 1

y= -2.(-2) - 1

y= 4 - 1

y = 3

Answer Link

Otras preguntas

Alloys C and D are composed of metals X and Y in the ratios 6:3 and 5:7 respectively by weight. How many kg of X must be melted along with 30 kg of alloy C and

Carrying a jute bag for shopping (a)Reduce (b) Reuse (c) Recycle

1. What is the Warsaw Pact? 2. Describe NATO. 3. What was the Cuban Missile Crisis? Who was the leader during this event? 4. Who is Khrushchev? 5. Describe John

How is a savings account most useful? for saving for a long time without withdrawing for depositing and withdrawing money frequently for using money for CDs and

If alpha and beta be 2 distinct roots satisfying equation a cos theta+bsin theta=c,Show that cos (alpha+beta)=(a^2-b^2)/(a^2+b^2)

There are 17 books on a shelf. 8 of these books are new. (a) What is the ratio of all books to used books? (b) What is the ratio of new books to used books?

Please help me! It states constant speed but moving in circular motion. I know there is acceleration due to a rate of change of velocity but what is the directi

Light takes approximately one second to travel from the earth to the moon this means that the moon is approximately

Write the recursive formula for the geometric sequence. a1 = -2 a2 = 8 a3 = -32

Which is true? 0.9030>0.8736 1.3432<1.2678 10.7495 > 10.7594 1.003<0.9784