Answer:
just plug in
g(x)=7x
g(-7)=7*(-7)
7*(-7)=-49
Step-by-step explanation:
Answer:
3cm
Step-by-step explanation:
V = L * W * H
V = 10 * W * 4
10 * 4 = 40
120 / 40 = 3
W = 3
Answer: See below for table
<h3>
Explanation:</h3>
What we know:
- Mary is 1st
- Isabella is a few seconds behind Mary
- Pilar is two places behind Isabella
- Anna is ahead of Pilar
How to solve:
Using Mary as a starting point, we can make accurate guesses to each person's rank.
<h3>
Process:</h3>
Mary
1st place, known constant
Isabella
2nd place, just behind Mary
Pilar
4th place, 2 places behind Isabella
Anna
3rd place, ahead of Pilar and behind Isabella
<h3>
Solution:</h3>
___________
Place | Name
1st | Mary
2nd | Isabella
3rd | Anna
4th | Pilar
---------------------
Hi!
[1] -3x-7y=8
[2] 3x-2y=-44
lets take [1]
-3x-7y=8
-7y=8+3x
-7y-8=3x
3x=-7y-8
No use 3x=-7y-8 and put it in 3x-2y=-44
-7y-8-2y=-44
-9y-8=-44
-9y=-36
9y=36
y=4
then use y in 3x-2y=-44
3x-2(4)=-44
3x-8=-44
3x=-36
x=-12
Therefore, y = 4 and x = -12
