Question

Evaluate 10x2y-2 for x = -1 and y = -2. 5/8 2 1/2 10(2)^0 40

Answer 1

Answer:

$2\frac{1}{2}$

Step-by-step explanation:

we have

$10x^{2} y^{-2}$

we know that

$10x^{2} y^{-2}=10\frac{x^{2}}{y^{2}}$

Substitute the value of x=-1 and y=-2 in the expression

$10\frac{(-1)^{2}}{(-2)^{2}}$

$10\frac{1}{4}$

$\frac{10}{4}$

Simplify

$\frac{5}{2}=2\frac{1}{2}$