Answer:
(8, - 5 )
Step-by-step explanation:
Given the 2 equations
3x + 4y = 4 → (1)
- x - 3y = 7 → (2)
Multiplying (2) by 3 and adding to (1) will eliminate the x- term.
- 3x - 9y = 21 → (3)
Add (1) and (3) term by term to eliminate x, that is
0 - 5y = 25
- 5y = 25 ( divide both sides by - 5 )
y = - 5
Substitute y = - 5 into either of the 2 equations and solve for x
Substituting into (1)
3x + 4(- 5) = 4
3x - 20 = 4 ( add 20 to both sides )
3x = 24 ( divide both sides by 3 )
x = 8
solution is (8, - 5 )
Answer:
0
Step-by-step explanation:
Cross multiple:
9x=10x
Move them to one side
0=1x
Divide
0=x
All the angles in a triangle= 180 degrees.
2x+5x+3x= 180
Combine like terms.
10x= 180
Divide by 10 into both sides.
x= 18
Now, plug that into <L.
3(18)= <L
<L= 54 degrees
I hope this helps!
~kaikers
Answer:
31.6
Step-by-step explanation:
80 * .55 = 48.4 (Current amount of water)
80 - 48.4 = 31.6 (Needed amount of water)
Answer:
67.1m
Step-by-step explanation:
67100 divided by 1000 = 67.1m
