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3 years ago

How to solve for a squared in the pythagorean

1 answer:

8 0

There are a few places to go when you want to know something, maybe like this
http://www.wikihow.com/Solve-Pythagoras-Theorem-Questions

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Evaluate 9÷3[(20-7)-2^2]

german

Answer:

Step-by-step explanation:

You will have to use the PEMDAS rule here. so Parntheses goes first, then exponents, then mutiplicaton or division, and finally addition or subtraction.

20-7= 13

-2^2 = (-2 * -2) = 4

9/3 = 3

so... 13*3 = 39+4 =43

3 0

3 years ago

Paraphin [41]

Answer:

what grade so i can help you

Step-by-step explanation:

3 0

3 years ago

Help y’all what shape is this

ddd [48]

It’s a Trapezium (also called Trapezoid)

8 0

3 years ago

Read 2 more answers

A random sample of 25 glass sheets is obtained and their thicknesses are measured. The sample mean is x= 3.54 mm and sample stan

lisabon 2012 [21]

Answer: (3.46, 3.62)

Step-by-step explanation:

The formula to find the confidence interval for population mean is given :-

$\overline{x}\ \pm\ t_{\alpha/2}\dfrac{s}{\sqrt{n}}$

, where n = sample size.

$t_{\alpha/2}$ = Two-tailed t-value for significance level of $(\alpha)$ and degree of freedom df= n-1.

$s$ = sample standard deviation.

As per given , we have

$\overline{x}= 3.54$ mm

s= 0.20 mm

n= 25

Significance level $=\alpha=1-0.95=0.05$

Since population standard deviation is not given , it means the given problem has t- distribution.

Two-tailed t-value for significance level of $(0.05)$ and degree of freedom df= 24:

$t_{\alpha/2\ ,df}=t_{0.025,\ 24}=2.0639$

95% Confidence interval for population mean:

$3.54\ \pm\ (2.0639)\dfrac{0.20}{\sqrt{25}}$

$=3.54\ \pm\ (2.0639)\dfrac{0.20}{5}$

$=3.54\ \pm\ (2.0639)(0.04)$

$=3.54\ \pm\ 0.082556$

$=(3.54- 0.082556,\ 3.54+ 0.082556 )=(3.457444,\ 3.622556)\approx(3.46,\ 3.62)$

Hence, the 95% two-sided confidence interval for the mean glass thickness = (3.46, 3.62)

7 0

4 years ago

So totally confused please help

OLga [1]

Answer:

The answer to your question is: r = 0.1

Step-by-step explanation:

Data

P = $4500

A = $9000

t = 9 years

r = rate

Formula

$r = \sqrt[t]{\frac{A}{P}} - 1\\$

Substitution

$r = \sqrt[9]{\frac{9000}{4500} - 1\\$

Simplification

$r = \sqrt[9]{2} - 1$

Result

r = 1.08 - 1

r = 0.08 ≈ 0.1

7 0

3 years ago