Answer: b) multiply row 1 by -3 and add the result to row 2
Step-by-step explanation:
Answer:
A and C
Step-by-step explanation:
Slimination
multiply first equaiton by 2
2x+6y=10
add to second equiaotn
2x-2x+6y-6y=10-10
0=0
this is true so therfor they are the same equaiton
so solve
x+3y=5
3y=-x+5
y=-1/3x+5/3
subsituter values for x and get valuse for y
if x=2 then y=1
Answer:
The correct answer is 12.446 feet.
Step-by-step explanation:
A ladder leans against a building forming an angle of 50° with the ground.
The base of the given ladder is 8 feet away from the building.
Let the length of the ladder that is to be found be x feet.
Thus we find the cosine of the angle of inclination.
∴ cos 50° = 
⇒ x = 12.446 feet
Therefore the length of the ladder is 12.446 feet.
Answer:
1. (5 * 6) + 10 / 8 = 8
4. (18 / 2) + 14 (-8^3) - 25 = 200
Step-by-step explanation:
1. parentheses between 5 and 6
4. -8 cubed