Answer:
18.21 cm^2.
Step-by-step explanation:
Area of the unshaded part
= area of the square - area of the quadrant
= 7^2 - 1/4 pi *7^2
= 49 - 30.788
= 18.21 cm^2.
Answer:

Step-by-step explanation:
4x -10y= 40
Let's rewrite this equation in the slope-intercept form (y= mx +c) so that we can obtain it's slope.
10y= 4x -40
Divide both side by 10:

The product of the gradients of perpendicular lines is -1.
⅖(gradient of line)= -1
Gradient of perpendicular line



Answer:
i dont know the answer sry
Step-by-step explanation:
srryyy
15/40 x 100 = 37.5
equation for percent decrease is diiference/original x 100.