Solve by elimination.
The goal is to cancel out one of the variables in order to easily solve for the other variable.
Do this by changing the equations so that the coefficients of either x or y add up to 0.
Notice the coefficients of y are 3 and 3, if we make one of them negative then they add up to 0. 3+ (-3) = 0
Multiply 2nd equation by -1.
6x +3y = 9
-2x -3y = -1
__________
4x +0y = 8
Solve for x
4x = 8
x = 8/4 = 2
Plug x=2 back into one of original equations to find y.
---> 2(2) + 3y = 1
---> 4 + 3y = 1
---> 3y = -3
---> y = -1
Therefore solution is (2,-1)
Answer:
Algae
Step-by-step explanation:
I just know this I don't know if an explanation is needed..
This means that if the model is 1 in lengh then th ereal car is 20 times of that or 20 in legnth
so to find the answer, just multiply model by 20
8.7 =model
real=8.7 times 20=174
real car is 174 inches
12 inches=1 foot
conversion factor
1 ft/12in=1=convesion
so
174 times 1/12=14 and 6/12
the answer is 14 feet and 6 inches or 14.5 feet
Answer:
8.
Step-by-step explanation:
13).
This is an equilateral triangle.
We see that all 3 angles are equal, so all sides are equal also.
So 2x - 6 = 10
2x = 16
x = 8.
