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Alexandra [31]
3 years ago
15

Describe why the expression 2^-4 is equivalent to the expression 1/2^4

Mathematics
2 answers:
sergey [27]3 years ago
8 0

Answer:

see expression

Step-by-step explanation:

Using the rule of exponents

a^{-m} ⇔ \frac{1}{a^{m} } , then

2^{-4}

= \frac{1}{2^{4} }

Thus

2^{-4} and \frac{1}{2^{4} } are equivalent expressions

jonny [76]3 years ago
6 0

Answer:

Because when a number is raised to negative indice, it automatically becomes a fraction of 1, with the number raised to the positive indice. If the original expression becomes the other..its still equivalent and equal to the same value-just changed to make solving more easier

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A line plot titled Household T V Ownership has Number of televisions on the x-axis. There is x about 0, 2 above 1, 4 above 2, 7
bogdanovich [222]

Answer

4

3

Step-by-step explanation:

i did the test.

8 0
4 years ago
Find an equation of a parabola with a vertex at the origin and directrix X = 2.5
adell [148]
Vertex=(0,0)
directrix is x=2.5
or x-2.5=0
so focus  S is (-2.5,0)
let P(x,y)be any point on the parabola.
Let M be the foot of perpendicular from P(x,y) on the directrix.
then SP=PM
\sqrt{(x-(-2.5))^2+(y-0)^2} =| \frac{x-2.5}{( \sqrt{1})^2 } |
squaring both sides(x+2.5)^2+y^2=(x-2.5)^2 , x^2+6.25+5x+y^2=x^2+6.25-5x

y^2=x^2+6.25-5x-x^2-6.25-5x=-10x
so eq. is  y^{2} =-10x


7 0
4 years ago
To mail a letter to Vienna, Austria the post office charges a flat rate of $9.75 and an additional $0.50 for every ounce the let
bearhunter [10]

Missing details

Which type of function model would be appropriate for this situation?

Answer:

Linear function

Step-by-step explanation:

Given

y = 0.50x +9.75

Required

The function model

A function of the form:

y = mx + b

is referred to as a linear function where

m = slope/rate

b=y\ intercept

By comparison:

m = 0.50\ b = 9.75

<em>So, it is a linear function (linear model)</em>

4 0
3 years ago
Is this right? I’m currently taking an assessment and I need to make sure I am right.
Leto [7]
Correct good job that seem correct
3 0
3 years ago
Read 2 more answers
Can a coefficient have two variables?
Morgarella [4.7K]

Answer: <em>Yes</em>, a coefficient can have two variables.

6 0
3 years ago
Read 2 more answers
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