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3 years ago

15

Solve. -5 3/4 - 3 1/2 =

2 answers:

zepelin [54]3 years ago

5 0

Answer:

-9 $\frac{1}{4}$

or

-9.25

Step-by-step explanation:

Ksenya-84 [330]3 years ago

5 0

Answer:

-9.25

Step-by-step explanation:

Can i be made brainliest and the answer is at the top.

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Inverse of f(x) = x2 − 9

luda_lava [24]

To find the inverse of a function, replace every x in the equation with a y, and replace every y in the equation with an x:

$x = y^{2} - 9$

Add 9 to both sides:

$y^{2} = x + 9$

Square root both sides to get y by itself:

$y = \sqrt{x+9}$

This equation can be simplified by taking the square root of 9 out of the root:

$\sqrt{9} = 3$
$y = 3 + \sqrt{x}$

The inverse of this function is y = 3 + √x.

7 0

3 years ago

Read 2 more answers

3х – 8y = — 16<br> =<br> M<br> So yeah I kinda need help

marishachu [46]

Answer:

3x-8y-16 = 0

Step-by-step explanation:

8 0

3 years ago

HELP!!! STATS!!!

Vadim26 [7]

Answer:

The 99% confidence interval is $165.776 < \mu < 180.224$

Step-by-step explanation:

From the question we are told that

The sample size is n = 100

The sample mean is $\= x = 173 \ days$

The population standard deviation is $\sigma = 28 \ days$

From the question we are told the confidence level is 99% , hence the level of significance is

$\alpha = (100 - 99 ) \%$

=> $\alpha = 0.01$

Generally from the normal distribution table the critical value of $\frac{\alpha }{2}$ is

$Z_{\frac{\alpha }{2} } = 2.58$

Generally the margin of error is mathematically represented as

$E = Z_{\frac{\alpha }{2} } * \frac{\sigma }{\sqrt{n} }$

$E = 2.58 * \frac{28 }{\sqrt{100} }$

=> $E = 7.224$

Generally 95% confidence interval is mathematically represented as

$\= x -E < \mu < \=x +E$

=> $173 -7.224 < \mu < 173 + 7.224$

=> $165.776 < \mu < 180.224$

4 0

3 years ago

What would the median be if each of the students increased their sales by 3

Tanzania [10]

Need more information

5 0

3 years ago

SHOW that (x + 3) and (x - 2) are factors of f(x) = x4 + 10x3 + 23x2 -<br> 34x - 120.

Anna35 [415]

If f(x) = 0 then it is a root

x + 3 = 0
x=-3
f(-3) = (-3)^4 + 10(-3)^3 + 23(-3)^2 - 34(-3) - 120 = 0

x - 2 = 0
x=2
f(2) = (2)^4 + 10(2)^3 + 23(2)^2 - 34(2) - 120 = 0

8 0

3 years ago