A.) ((150*280)/2)*210
B.) ((150*280)/2)*2+210*3
Answer:
121.5
Step-by-step explanation:
1.5^2 = 2.25
2.25*54 = 121.5
Answer:
m = -4
Step-by-step explanation:
We are given that a line intersects the points (-2, 9) and (3, -11).
We want to write the slope of this line.
The slope (m) can be found using the formula , where and are points.
Even though we have everything we need to calculate the slope, let's label the values of the points to avoid any confusion & mistakes.
Now substitute these values into the formula (remember that the formula has subtraction).
m=
m=
Simplify.
m=
Subtract the values on top.
m=
Now add the values on the bottom together.
m=
Now divide -20 by 5.
<u>m = -4</u>
Answer:
x=16
y=40
Step-by-step explanation:
x + y = 56
y = 56 - x (isolate a variable)
y = -x + 56 (this is optional)
2x = .5y + 12
2x = .5(-x + 56) + 12 (substitute for y)
2x = -.5x + 28 + 12
2x = -.5x + 40
2.5x = 40
x = 16
16 + y = 56 (plug what you got for x back into the original eq)
y = 40
Answer:
49.13
Step-by-step explanation:
1/2×6×8=24 3.14×4²/2=23.15
24+23.15=49.13