Answer:
-1/7=n
Step-by-step explanation:
We can use cross products to solve
5 7
-------- = ------
n+3 4
5*4 = 7*(n+3)
20 = 7*(n+3)
Distribute
20 = 7n+21
subtract 21 from each side
20-21 = 7n+21-21
-1 = 7n
Divide each side by 7
-1/7 = 7n/7
-1/7=n
Answer:
Step-by-step explanation:
y=4x+2
x+2y=22
x+2(4x+2)=22
x+8x+4=22
9x+4=22
9x=18
x=2
y=4(2)+2
y=8+2
y=10
(x,y) -> (2,10)
Answer:
25
Step-by-step explanation:
The answer to this question I’m pretty sure it’s B I had this question yesterday