Answer:
1)· 5x + 2y = 9. First we solve for y. 2y= 9 -5x. y=(9-5x)/2. Now that we have the value of y. We substitute on the original equation and resolve. 5x + 2y = 95x + 2y = 9 5x + 2(9-5x)/2 = 9 5x + 9 - 5x = 9 9 = 9
That would be x = 1
Now substitute and resolve to find y.
5(1) + 2y = 9
5 + 2y = 9
2y = 4
y = 2
So our answer x=1 and y = 2. (1,2)
Proof :
5(1) + 2(2) = 9
5+ 4 = 9
9 = 9
Step-by-step explanation:
hoped it helped for the first one i didnt now the second one
Answer:
I dont know what that, but I think Its 3
yellow car = x
white cars = 9x ( 9 times as many white cars)
9x +x = 40
10x = 40
x = 40/10 =4
4 yellow cars
9*4 = 36 white cars
-20 28/35, -20, 20 28/40, 20 27/30
- the negative numbers will always be less than the positive numbers, so those will be first. Now you have to find the BIGGEST negative number, that’s is worth less than the smaller negative number, because negatives are like opposites of positives. So the bigger negative number is first, then the next negative number. Now you just find the smallest positive number to the biggest positive number.
