Answer:
x + y = -2
Step-by-step explanation:
The two primary equations to remember when dealing with graphing 2-variable equations are: ax + by = c (a & b are the x & y coefficients, respectively), and the other is y = mx + c (m = slope, x & y represent themselves). There is another equation to find the slope. If not already known, it's: ∆y/∆x {∆(aka Delta) = difference}. So, since that's all been established, we can proceed to calculate your question:
1) Find your slope: 1 - (-4) = 5 for your y-variable. And -3 - 2 = -5 for your x-variable. So your slope = 5/-5 = -1
2) Use the y = mx + c equation together with either set of (x,y) coordinates to get the equation 1 = (-1)(-3) + c. Which gives you c = -2
3) So, going back to the main equation to remember, the ax + by = c, use a one of your given sets of x,y coordinates and input your known values for x, y, & c to get: a(-3) + b(1) = (-2) and do the same with other set (these are just double-checks, coefficients are all equal to 1 anyways). So, you should arrive to the equation: x + y = -2
Answer:
1233cm^2
Step-by-step explanation:
a of triangle = 1/2 bh
1/2 x 12 x 9 = 54
108 x 2 = 108
a of regtangle = l x w
25 x 15 = 375
375 x 3 = 1125
total surface area = 1125 + 108 = 1233cm^2
Answer:
yes
Step-by-step explanation:
sorry I thought this was funny I have no idea what’s happening
Answer:
They sold 16 French fries.
Step-by-step explanation:
Let x represent the number of large burgers that they sold on that day.
Let y represent the number of French fries that they sold on that day.
fast food sells large burgers for five dollars each and french fries for three dollars each that day and their total sales was $98.It means that
5x + 3y = 98 - - - - - - - - - - - - - -1
they sold six more french fries than burgers. It means that
y = x + 6
Substituting y = x+ 6 into equation 1, it becomes
5x + 3(x + 6) = 98
5x + 3x + 18 = 98
8x = 98 - 18 = 80
x = 80/8 = 10
y = x + 6 = 10 + 6
y = 16
