Answer:
x = 9
Step-by-step explanation:
If you have any questions about the way I solved it, don't hesitate to ask me in the comments :)
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P.S:
x cannot be equal to (-9) because the value of a side cannot be negative
The formula that I used is Pythagoras Theorem
Total time taken by Sam before Al caught up with him = 15+10 = 25 minutes
In hours = 25 minutes = 25/60 = 5/12 hrs
Distance covered by Sam = Distance covered by Al = Speed (Sam) * time taken = 3.2*5/12 = 4/3 miles.
Al takes 10 minutes to cover that distance. Therefore,
Al's speed = Distance/time = (4/3)/(10/60) = (4/3)*(60/10) = 8 mph
Answer:
12%
Step-by-step explanation:
85/700 × 100 = 12.14
Answer:
A. -8x⁷ + 18x⁵y⁵ - 12x²y⁴ + 27y⁸
Step-by-step explanation:
Given:
(2x⁵ + 3y⁴)(-4x² + 9y⁴)
Required:
Find an equivalent polynomial
Solution:
(2x⁵ + 3y⁴)(-4x² + 9y⁴)
Using distributive property of multiplication
2x⁵(-4x² + 9y⁴) + 3y⁴(-4x² + 9y⁴)
-8x⁷ + 18x⁵y⁴ - 12x²y⁴ + 27y⁸
There are no like terms to add or combine, therefore:
(2x⁵ + 3y⁴)(-4x² + 9y⁴) = -8x⁷ + 18x⁵y⁵ - 12x²y⁴ + 27y⁸
1/3 x^(-2/3) cos (x^1/3) + 1/3(sinx)^-2/3 .cos x
