1/2 of 40= 20
40/5=8
20+8=28
28 of your CDs will not work properly.
I hope this helps!
Answer:
Step-by-step explanation:
To find an equation of the sphere with center (4, −12, 8) and radius 10
intersection with xy-plane
Put z=0
(A circle with centre at (4,-12) and radius 6)
intersection with xz-plane
Put y =0
Sum of squares cannot be positive, so DNE
intersection with yz-plane
Put x=0
A circle in YZ plane with centre at y =-12 and z =8 and radius square root of 84
Slit the shape into a rectangle and two triangles:
Rectangle = 9 x 8 = 72 sq. Ft.
Triangle = 1/2 x 8 x 2.5 = 10 sq. Ft x 2 = 20 sq. Ft.
Total area = 72 + 20 = 92 sq. Ft.
3 coats x 92 = 276 sq ft worth of paint.
1 quart covers 200 so he would need to buy 2 quarts:
2 x $8.97 = $17.94 total
Answer:
2 <em>3/5</em>
Step-by-step explanation:
Multiply the cost per yard by the number of yards bought.
Change 3 1/2 to an improper fraction:
3 1/2 = 7/2
Now you have 7/2 x 5/8
Multiply the top numbers together and then the bottom numbers together:
(7 x 5) / (2 x 8) = 35/16
Now rewrite the improper fraction as a proper fraction:
2 3/16 which would be $2.19
