Answer: 5x^(-1) or 5/x.
Step-by-step explanation: The equation given is (5*x^2)/x^3 and we are supposed to solve it for x = 2. First. we simplify the equation. Since we have x^2 in the numerator and x^3 in the denominator, using the equation a^x/a^y = a^(x - y) we find that we get 5*x^(-1) we can leave it like this or simplify it to 5/x, since negative exponents mean fractions.
Answer:
x = 36°n + 7° OR x = 90°n + 37.5° for any integer n
Step-by-step explanation:
Since cos(x) = sin(90°-x), we have
sin(7x-20°) = sin(90°-(3x+40°)) = sin( 50° - 3x )
sin( x ) = sin( y ) implies either:
x = 360° n + y
or
x = 360°n + 180° - y
Generally sin(x) = sin(y) ⇒ x = 180°n + (-1)ⁿ y
First case:
7x - 20° = 360°n + 50° - 3x
10x = 360°n + 70°
x = 36°n + 7°
Second case:
7x - 20° = 360°n + 180° - ( 50°-3x )
7x - 20° = 360°n + 180° - 50° + 3x
7x - 20° = 360°n + 130° + 3x
4x - 20° = 360°n + 130°
4x = 360°n + 150°
x = 90°n + 37.5°
Answer:
the 2
Step-by-step explanation:
Answer:
14 rainy days were there.
Step-by-step explanation:
Total days = 90.
Rainy days = 2/13
Non rainy days = 11/13
If 90 days = 13 total ratio
? = 2 ratio
(90×2)/13 = 14days.
There are 240 nickles in 12 dollars.
1 dollar=20
so,
20×12=240
