Answer:
You have to eliminate one of the variables when the equations are added.
A) x + 2y + z = 10
B) 2x -y +3z = -5
C) 2x -3y -5z = 27
We mulutiply A) by 2 then add it to B and C
A) 2x + 4y + 2z = 20 and the sum =
6x = 42 Luckily, the "y" and "z" variables cancel out and we find:
x = 7
Then we use x =7 in calcucating equation A) and B)
A) 2y + z = 3
B) -y + 3z = -19
THEN solve for y and z by eliminating variables.
Step-by-step explanation:
For Letter C You Need to Count The Squares in the Pond And the Half Squares are a Half. The Answer for C is 33 Because The Half and the Other Half is a Whole So I Made 3 New Wholes and Added it to the 30.
Answer:
Step-by-step explanation:
area of circle=πr^2
=3.14*5^2
=3.14*25
=78.5 ft^2
Y = 0.8597(60) + 73.4728
y = 124.9468
About 125 g
Answer:
The plane is now at (1100, 600) in unit mile
Step-by-step explanation:
The airport is the point (0 ,0) and the plane travels from there 1100 miles east and thereafter 600 miles north. If the unit is in mile then we may say that the planes co -ordinates are now (1100 , 600)
Since,
positive x -axis points towards east and positive y-axis points towards north.
