Put both of those equations into slope intercept form (in order to be typed into the graphing calculator).
2x + 3y = 16.9
3y = -2x + 16.9
y = (-2/3)x + 16.9/3
5x = y + 7.4
5x - 7.4 = y
So in the graphing calculator,
Y1 = (-2/3)x + 16.9/3
Y2 = 5x - 7.4
Then find the point of intersection and the x value of that would be the solution.
You get the coordinate (2.3, 4.1). So x = 2.3, y = 4.1
Answer:
0.1
Step-by-step explanation:
Take paranthesis away.
5.6-3.2-2.3
subtract 3.2 from 5.6
2.4-2.3=0.1
Hope it helps1
Answer:
4/7
Step-by-step explanation:
When you multiply by fractions you multiply the numerators and denominators
4/1 x 1/7
Anything that doesnt have anything under it always has a 1 as its denominator
80 adult, 50 child. Got answer by trial and error, so no clue as to how to get the answer using any formula.
Step-by-step explanation:
(3x+20)² is the same as
(3x+20)(3x+20)
you need to have for different numbers
SO
3x*3x is 9x²
3x*20 is 60x
20*3x is also 60x
20*20 is 400
put it together
9x²+60x+60x+400
simplify to
9x²+120x+400