What is the value of y in this simplified expression? k + m 10

Question

asked Feb 10, 2020 211k views

2 Answers

Rohit Dhawan · Answer 1 · 2020-02-10T19:17:20+0000

Question 1:

For this case we have that by definition of properties of powers it is fulfilled that:

$a ^ {- 1} = \frac {1} {a ^ 1} = \frac {1} {a}$

So, if we have the following expression:

$(-j) ^ {- 7}$

We can rewrite it as:

$\frac {1} {(- j) ^ 7}$

So we have to:

x = 7

ANswer:

Question 2:

For this case we have that by definition of properties of powers it is fulfilled that:

$a ^ {- 1} = \frac {1} {a ^ 1} = \frac {1} {a}$

If we have the following expression:

k^(-5)+m^(-10)

We can rewrite it as:

$\frac {1} {k ^ 5} + \frac {1} {m ^ {10}}$

So we have
y = 5

Answer:

TOC · Answer 2 · 2020-02-14T18:05:22+0000

Answer:

y=5

x=7

Explanation:

When given an expression in the form a⁻ᵇ the expression is the same as 1/aᵇ where a and b are integers.

Solving the question by giving the equivalents of the expression:

Therefore (-j)⁻⁷ is the same as 1/j⁷

The value of x=7

k⁻⁵+m⁻¹⁰=1/k⁵+1/m¹⁰

Therefore the value of y is 5.