Nbclibyron Nbclibyron

20-04-2020
Mathematics

contestada

If ax + y=23, 3x - y = 9, and x =8, what is the value of a ?

Respuesta :

Anisatunizzati Anisatunizzati

21-04-2020

Answer:

a = 1

Step-by-step explanation:

x = 8

3x - y = 9

3(8) - y = 9

24 - y = 9

-y = 9 - 24

-y = -15

y = 15

ax + y = 23

a(8) + 15 = 23

8a = 23 - 15

8a = 8

a = 8/8

a = 1

Answer Link

Otras preguntas

Three times one number added to five times another number is 54. The second number is two less than the first. Use a system of equations to find the numbers.

A card is drawn at random from a well-shuffled deck of playing cards. Find the probability that the card drawn is (i)a card of spade or an ace (ii)a red king (i

Prove that any number raised to the 0'th power equals 1

if the letters of the word 'MOTHER'are written in all possible order and these words are written out as in dictionary ,find the rank of the word 'MOTHER'.

After school, Marcus can walk 1 mile to the library in about the same time he can bike 2.5 miles to the sporting goods store. His speed on the bike is 6 mi/h f

Two cars leave Denver at the same time and travel in opposite directions. One car travels 10 mi/h faster than the other car. The cars are 500 mi apart in 5 h. H

find the missing endpoint given one endpoint and midpoint endpoint-(6,-10) midpoint (-1,2)

MaryJo decided to solve the equation 3x - 2 = -x - 6

MaryJo decided to solve the equation 3x - 2 = -x - 6

Write an algebraic expression to answer the question below. A pipe is cut into two pieces. One piece has a length of 37 feet. If the other piece has a length