A) she incorrectly determined the GCF.
The GCF of 32ab - ab would be ab, not 8b.
If you times 39.99 by 0.20 (20%) then you get your answer of $7.99
The circumference of a circle:
2丌r
In this case, the radius:
10.4÷2
=5.2cm
The circumference
=2兀(5.2)
=2(5.2)兀
=10.4兀
Therefore the answer is 10.4兀.
Hope it helps!
Answer:
Step-by-step explanation:
<u>Simplify:</u>
- √5(√8 + √18) =
- √5*8 + √5*18 =
- √40 + √90 =
- √4*10 + √9*10 =
- 2√10 + 3√10 =
- (2 + 3)√10 =
- 5√10
<u>The value of a:</u>
Answer:
dy/dx = (4 (x + y)^3 - y) / ( x - 4(x + y)^3).
Step-by-step explanation:
xy = (x + y)^4
Using implicit differentiation:
x dy/dx + y*1 = 4 (x + y)^3 * (1 + dy/dx)
x dy/dx + y = 4 (x + y)^3 + 4 dy/dx (x + y)^3
x dy/dx - 4 dy/dx (x + y)^3 = 4 (x + y)^3 - y
dy/dx( x - 4(x + y)^3) = 4 (x + y)^3 - y
dy/dx = (4 (x + y)^3 - y) / ( x - 4(x + y)^3)
