so you're going to need to find the slope. in order to do that use (y2-y1)/(x2-x1)
(7-(-2))/(0-8)
simplify
9/-8
simplify -9/8
now using y=mx+b, we need to find b. so we can plug in the coordinates of (0,7) or (8,-2). let's use (8,-2) because it involves more math.
y=mx+b
-2=(-9/8)(8)+b
multiply (-9/8) by 8 to get -9
-2=-9+b
add 9 to both sides
7=b
so our equation is now
y=-(9/8)x+7
36x-8y^2
36(3)-8(-6)^2
108-8(36)
108-288
=-180 <----
Answer:
X = .5
Step-by-step explanation:
10 × 20 = 200
10.5 × 20 = 210
Explanation:
Y = 210
210 = 20(10+X)
divide both sides by 20
10.5 = 10+X
subtract 10 from both sides
.5 = X
X = .5
Answer:
the percentage is 55/100*100=55%
Step-by-step explanation:
the segment of the square is 40/4=10 cm
so the area of the square is 10^2=100cm^2
the shaded area = the area of the square - the sum of the areas of the triangles inside the square
100- (10*6/2+10*3/2)=100-(30+15)=55 cm^2