robertalfa23ow8xa8 robertalfa23ow8xa8

02-04-2020
Mathematics

contestada

If 5x + 3y = 12 and 4x - 5y = 17, what is y?

Respuesta :

ghanami ghanami

03-04-2020

Answer:

y=-1

Step-by-step explanation:

5x + 3y = 12 ....(*)

4x - 5y = 17....(**)

multiply (*) by : -4 and(**) by 5

you have : -20x -12 = -48.....(1)

20x -25y = 85....(2)

add(1) and(2) : -37y = 37 so : y =37/-37= -1

Answer Link

Otras preguntas

Which is an example of bivariate data?(1) age of students in a club(2) grade level and age of students in a school(3) type of lunch each student orders at schoo

what are some interesting facts about the great sandy desert?

Which situation describes a correlation that is not a causal relationship? (1) Car color and number of car accidents(2) Hours spent studying and test score(3) A

Zoey made 6 3/4 cups of fruit salad for a picnic. At the picnic, they ate 1/3 of the fruit salad. How much fruit salad did they eat?

write the equation in function form.then graph the equation y-x=-1

if square root of 405 rounded to the nearest thousandth is 20.125 how do u simplify to get to that answer, thank u.

solve for m (r=3m+3z) solution is m=___, use integers or fractions for any numbers in the expression (simplify answer) please help

n^2+7n+15=5 show work please

in a geometric series t1=23,t3=92 and the sum of all of the terms of the series is 62813. How many terms are in the series

how do you write fraction 9/10 as a decimaland how to convert fractions into decimals