3 years ago

BRAINLIEST: Evaluate each expression for x = 2 and y = 5. 3. -4x^-2 + 3y^0

Mathematics

1 answer:

Nostrana [21]3 years ago

6 0

2

-4(2)^-2 + 3(5)^0
-4/2^2+3
-1+3
2

the x^-2 moves to the denominator
anything to the 0 power is 1

You might be interested in

Bus one had half of the grade eight students and 6 grade, seven students, bus two had 15 grade seven students and one-third of g

Rzqust [24]

I'm not sure about that one

7 0

3 years ago

20 POINTS !! IF YOU ANSWER THE QUESTIONS !

tatuchka [14]

12 the answer is 12 I know it

6 0

3 years ago

Which equation is equivalent to √x^2+81 = x+10

jeka57 [31]

Keywords:

<em>equation, operations, equivalent, binomial, square root </em>

For this case we have an equation in which we must apply operations to rewrite it in an equivalent way. We must start by raising both sides of the equation to the square. Thus, we eliminate the square root of the left side of equality and finally solve the binomial of the right side of equality.

So we have:

$\sqrt {x ^ 2 + 81} = x + 10\\(\sqrt {x ^ 2 + 81}) ^ 2 = (x + 10) ^ 2\\x ^ 2 + 81 = (x + 10) ^ 2$