2 years ago

Which of the following choices best describes the behavior of the light rays when they pass through the lens:

Mathematics

1 answer:

yulyashka [42]2 years ago

5 0

i would C because it the lights didnt bend

it went through

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The inverse, f'(x), of f(x) =

astraxan [27]

Step-by-step explanation:

Given

$f(x) = \frac{x + 5}{x}$

$f(2) = \frac{2 + 5}{2} \\ = \frac{7}{2}$

Now

${f}^{ - 1} (x) = \frac{5}{x - 1}$

${f}^{ - 1} (2) = \frac{5}{2 - 1} \\ = \frac{5}{ 1} \\ = 5$

Hope it will help :)❤

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2 years ago

Find the y-intercept and the slope of the line. 6x-2y=5

solmaris [256]

Answer:

m=3

b=(0,5)

Step-by-step explanation:

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1 year ago

A sample of n = 4 scores has SS = 48. What is the estimated standard error for this sample? Group of answer choices

mylen [45]

Answer:

Step-by-step explanation:

We have

n = 4 scores

SS = 48

For this question, we are required to find the estimated standard error

To get this, we first solve for the variance

S² = SS/n-1

= 48/4-1

= 48/3

= 16

Then S² = 16

S = √16

S = 4

Then the estimated standard error is given by:

S/√n

= 4/√4

= 4/2

= 2.

The estimated standard error is 2.

4 0

2 years ago

Madame Dubois bought 20 pearl necklaces for $500. Becoming bored quickly, she sold 3/4 of them at $40 each. She sold the rest at

Serjik [45]

$725

3/4 of 20 = 15 necklaces

15 x 40 = 600

The rest:

5 x 25 = 125

125 + 600

= 725

4 0

3 years ago

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What can 23/40 be simplified into

Lelechka [254]

23/40=0.575
Here you go

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2 years ago

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