Find the missing value to the nearest hundredth cos _____ 7/18

Mathematics

1 answer:

Bezzdna [24]3 years ago

6 0

I believe D will be the correct answer.

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List the angles of triangle ABC in order from smallest to largest measure if AB = 9, AC = 11, and BC = 10.

galben [10]

Across smallest side- smallest angle.
across largest side- largest angle
largest side is AC, so largest angle is B
smallest side is AB, so smallest angle is C
angles from smallest to largest : C, A, B

4 0

3 years ago

a furlong is a unit of measure used in horse racing. every year, horses race 10 furlongs in the kentucky derby, one furlong is e

tankabanditka [31]

1.25 m.
here you go.

7 0

3 years ago

Round 80531 to the nearest thousand.

Iteru [2.4K]

That would be 8,1000

6 0

3 years ago

Read 2 more answers

The 1996 gss asked, "if the husband in a family wants children, but the wife decides that she does not want any children, is it

zzz [600]

The confidence interval would be
$0.80\pm0.03$ .

We use the formula
$p\pm z*\sigma_p$ , where

$\sigma_p=\sqrt{\frac{p(1-p)}{N}}$ , with p being the sample proportion and N being the sample size.

First we find the z-score associated with this level of confidence:
Convert 95% to a decimal: 95/100 = 0.95
Subtract from 1: 1-0.95 = 0.05
Divide by 2: 0.05/2 = 0.025
Subtract from 1: 1-0.025 = 0.975

Using a z-table (http://www.z-table.com) we see that this value is associated with a z-score of 1.96.

Since 578/720 said yes, this gives us p=0.80:
$\sigma_p=\sqrt{\frac{0.80(1-0.80)}{720}}=\sqrt{\frac{0.8(0.2)}{720}=0.015$

This gives us
$0.80\pm1.96(0.015)=0.80\pm 0.03$

5 0

4 years ago

At a rate of 36 miles per hour, it takes Henry 15 minutes to drive from the library to his house. Show how to find the distance

EastWind [94]

This is applying the formula
$distance=rate*time$

We have a slight problem, though, because we are measuring rate in miles per hour, and we are measuring time in minutes. To make this problem solvable, we need to convert to either miles per minute or convert the time to hours. I'm going to convert the 15 minutes into hours:
$15min*\frac{1 hour}{60 min}=\frac{1}{4}hour$

Now that all of the units match, we have:
$distance=36\frac{mi}{hr}*\frac{1}{4}hr$

You can finish from there I'm sure.

4 0

4 years ago