Answer:
18x^2 y^8
Step-by-step explanation:
2(-3xy^4)^2
We know that (ab)^x = a^x b^x
2 * (-3)^2 x^2 y^4^2
2 *9 x^2 y^4^2
We know that a^b^c = a^(b*c)
18 x^2 y^(4*2)
18x^2 y^8
I think it’s -2.26794919i
Answer:
Step-by-step explanation:
we know that
The circumference of a circle is equal to
where
D is the diameter of the circle
In this problem we have
substitute and solve for D
Answer:
y = 2
x = 5
Step-by-step explanation:
4x + 5y = 10 | ×3 |
3x - 3y = 21 | ×4 |
12x + 15y = 30
12x - 12y = 84
____________--
27y = -54
y = -54/27
y = 2
4x + 5y = 10 | ×3 |
3x - 3y = 21 | ×5 |
12x + 15y = 30
15x - 15y = 105
____________+
27x = 135
x = 135/27
x = 5
The second one is the only equivalent equation. Simply plug in each variable in each equation. And compare!
