3x + 4y = 38 ( equation 1) ----> ×5
5x - 5y = -30 ( equation 2) ----> ×3
When you multiply eqn 1 by 5 you get, 15x + 20y = 190
And when you multiply eqn 2 by 3, you get, 15x - 15y = -90
Then you solve both equations by subtracting eqn 2 from eqn 1
15x + 20y = 190
15x - 15y = 90
Then 15x - 15x gets cancelled and 20y - (-15y) gives 35y and 190 - (-90) gives 280.
So that gives 35y = 280
y = 8
And when you replace y = 8 in any of the two equations, x = 2
Answer:
The constant of proportionality is just 0.59
You set up the equation with 35/75 and you said that equal to X tan. You then take your calculator and type in 35÷75 and press the equal button. You then hit the second function button and then press tan and it will give you 25
Answer:
c
Step-by-step explanation:
You do 10 x 10 6 times and the same for 3 times and your get the answer
example
10^3 x 10^2
10x10x10 = 1,000
10x10 = 100
1,000 x 100 = 100,000
