hogrefekelsey
hogrefekelsey hogrefekelsey
  • 04-04-2021
  • Mathematics
contestada

a first number plus twice a second number is 8 twice the first number plus the second totals 25

Respuesta :

barackodam barackodam
  • 04-04-2021

Answer:

The first number is 14

The second number is -3

Step-by-step explanation:

x + 2y = 8

2x + y = 25

Solving simultaneously,

2x + 4y = 16

2x + y = 25

On subtracting, we have

3y = -9

y = -3

Going to substitute for y, we have

x + 2(-3) = 8

x - 6 = 8

x = 14

Answer Link

Otras preguntas

what’s the difference between a mixture and a substance
Find the y-intercept and x-intercept of the line. 2x-y=6
The density of oxygen gas is 1.429 × 10–3 g/cm3 at standard conditions. What would be the percent error of the average of two separate experimental determinatio
X+y+z=2 2x+y-z=5 X-y+z=-2
Negative 10 minus 2?
Find f(x) and g(x) so the function can be expressed as y = f(g(x)). (1 point)y = Seven divided by x squared. + 10Please give a detailed explanation to this ques
At December 31, Gill Co. reported accounts receivable of $238,000 and an allowance for uncollectible accounts of $600 (credit) before any adjustments. An analy
What is the purpose of balancing criticism with encouragement? Select all that apply. *shows objectivity *communicates respect and concern for others *soothes t
An animal shelter spends $4.00 per day to care for each bird and $7.00 per day to care for each cat. Alyssa noticed that the shelter spent $194.00 caring for b
Atomic number of calcium