2 years ago

What is the inverse of the function f(x) = 2x – 10?

Mathematics

1 answer:

Natasha2012 [34]2 years ago

7 0

Answer:

f^-1 (x)=1/2x+5

Step-by-step explanation:

y=2x-10

x=2y-10

2y=x+10

y=1/2x+10/2

y=1/2x+5

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Answer:

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Step-by-step explanation:

point slope form

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2 years ago

Write 0.125 as a fraction

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Answer:

Hey mate!!

Ur answer is, 0.125= 125/1000

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2 years ago

Lexie, a bowler, claims that her bowling score is more than 140 points, on average. Several of her teammates do not believe her,

Crazy boy [7]

Answer:

The test statistic is $t = 3.744$

Step-by-step explanation:

From the question we are told that

The population mean is $\mu = 140$

The The level of significance is $\alpha = 0.05$

The sample size is n = 18

The null hypothesis is $H_o : \mu = 140$

The alternative hypothesis is $H_a : \mu > 140$

The sample mean is $\= x = 155$

The standard deviation is $\sigma = 17$

Generally the test statistics is mathematically represented as

$t = \frac{\= x - \mu }{ \frac{ \sigma}{ \sqrt{n} } }$

substituting values

$t = \frac{ 155 - 140 }{ \frac{ 17 }{ \sqrt{18} } }$

$t = 3.744$

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