Answer:
1) let the larger number be x and the smaller is y
2) 9x + 2y = 6
3x - y = 7
3) 9x+2y=6 and 9x -3y = 21
5y = -15
y= -3
5)
3x=4
x=4/3
When you have an exponent that is negative, it means to take reciprocal of the fraction then take it the power.
Some examples:
5^-2 = 1/5^2 = 1/25
10^-3 = 1/10^-3 = 1/1000
If this answer wasn't clear enough, just comment below or DM me a message!
Let the height of the trees are h1,h2 and h3,
Then,we know that
Mean height=(h1+h2+h3)/3
Answer:
x = -3
Step-by-step explanation:
x + 3y = -5
x = -3y - 5
2(-3y - 5) - y = 11
-6y - 10 - y = 11
-7y - 10 = 11
-7y = 21
y = -3
