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3 years ago

I need all the answers

Mathematics

1 answer:

Veronika [31]3 years ago

3 0

169375923763928374774992228737474783938.84747474848883939939393838383838383io3

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PLEASE HELP! Two joggers run 9 miles north then 3 miles west.What is the shortest distance, to the nearest tenth of a mile, they

Marysya12 [62]

Answer:

9.4 miles

Step-by-step explanation:

5 ² +8 ² =C ²

25+64=c ²

89=c ²

c=9.4

3 0

3 years ago

What is the product of (x − 7)(2x² – 5x<br> -<br> 3<br> + 3)?

butalik [34]

Answer:

2x³-5x-14x²+35

Step-by-step explanation:

this is the simplified version/answer

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2 years ago

A researcher took a random sample of 100 students from a large university. She computed a 95% confidence interval to estimate th

katen-ka-za [31]

Answer:

Part (A): The correct option is true.

Part (B): The null and alternative hypothesis should be:

$H_o: \mu =0 ; H_a:\mu \neq0$

Step-by-step explanation:

Consider the provided information.

Part (A)

A random sample of 100 students from a large university.

Increasing the sample size decreases the confidence intervals, as it increases the standard error.

If the researcher increase the sample size to 150 which is greater than 100 that will decrease the confidence intervals or the researcher could produce a narrower confidence interval.

Hence, the correct option is true.

Part (B)

The researcher wants to identify that whether there is any significant difference between the measurement of the blood pressure.

Therefore, the null and alternative hypothesis should be:

$H_o: \mu =0 ; H_a:\mu \neq0$

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3 years ago

4 raised to power two minus 8u minus 9=0

coldgirl [10]

Answer:

x can be 3, -3, i, or -i.

Step-by-step explanation:

If you can't find the factoring by looking at this, simplify the equation.

let

to make things easier to see

Now we have

−

See it now?

We can factor into

(

−

)

(

)

Now substitute back in

for

(

−

)

(

)

Since

(

−

)

is a difference of two squares,

(

−

)

(

)

Now we have

(

−

)

(

)

(

)

x can be 3, -3 for the first two parts

can become

−

Taking the positive and negative root means

√

−

Thus

in addition to 3 and -3.

4 0

3 years ago

Read 2 more answers

Convert the quadratic equation, <br>f (x) = 2(x - 3)2 +1, into standard form.

laiz [17]

Step-by-step explanation:

........4x-y=11........

8 0

3 years ago