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Iteru [2.4K]
3 years ago
10

Convert 3π into degrees

Mathematics
2 answers:
lapo4ka [179]3 years ago
8 0
3rr=540 degrees did i help
fiasKO [112]3 years ago
7 0
3π = 540 Degrees
Hope it helped :)
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<img src="https://tex.z-dn.net/?f=%28x%20-%207%29%28y%20-%209%29" id="TexFormula1" title="(x - 7)(y - 9)" alt="(x - 7)(y - 9)" a
Snezhnost [94]

Remark

There are occasions where this is very handy to know. Use FOIL.

Solve

F: (First): x*y = xy

O: (Outside): x *(-9) = - 9x

I:(Inside): (-7)*y = - 7y

L:(Last): (-7)*(-9) = 63

Add the terms together

xy - 9x - 7y + 63   <<<< Answer


4 0
3 years ago
The mean amount purchased by a typical customer at Churchill's Grocery Store is $23.50 with a standard deviation of $5.00. Assum
DochEvi [55]

Answer:

a. \mathtt{P(X \geq 25) =0.0170}     ( to four decimal places)

b. P(22.5   ( to four decimal places )

c. The limits will be between the interval of   ( 22.33,24.67 )

Step-by-step explanation:

Given that :

mean = 23.50

standard deviation = 5.00

sample size = 50

The objective is to calculate the following:

(a)  What is the likelihood the sample mean is at least $25.00?

Let X be the random variable, the probability that the sample mean is at least 25.00 is:

P(X \geq 25) = 1 - P(\dfrac{X - \mu}{\dfrac{\sigma}{\sqrt{n}}} < \dfrac{25- 23.50}{ \dfrac{5}{\sqrt{ 50}} })

P(X \geq 25) = 1 - P(Z< \dfrac{1.5}{ \dfrac{5}{7.07107}} })

P(X \geq 25) = 1 - P(Z< \dfrac{1.5 \times 7.071}{ {5}})

P(X \geq 25) = 1 - P(Z< 2.1213)

P(X \geq 25) = 1 - P(Z< 2.12)   to two decimal places

From the normal tables :

P(X \geq 25) = 1 - 0.9830

\mathtt{P(X \geq 25) =0.0170}     ( to four decimal places)

(b) What is the likelihood the sample mean is greater than $22.50 but less than $25.00?

P(22.5

P(22.5

P(22.5

P(22.5

P(22.5  to four decimal places

(c) Within what limits will 90 percent of the sample means occur?

At 90 % confidence interval, level of significance = 1 - 0.90 = 0.10

The critical value for the z_{\alpha/2} = 0.05 = 1.65

Standard Error = \dfrac{\sigma}{\sqrt{n}}

Standard Error =  \dfrac{5}{\sqrt{50}}

Standard Error = 0.7071

Therefore, at 90 percent of the sample means, the limits will be between the intervals of : (\mu \pm z_{\alpha/2} \times S.E)

Lower limit =  ( 23.5 - (1.65×0.707) )

Lower limit =  ( 23.5 - 1.16655 )

Lower limit = 22.33345

Lower limit = 22.33    (to two decimal places).

Upper Limit = ( 23.5 + (1.65*0.707) )

Upper Limit = ( 23.5 + 1.16655 )

Upper Limit = 24.66655

Upper Limit = 24.67

The limits will be between the interval of   ( 22.33,24.67 )

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3 years ago
Which step did Craig do incorrectly?<br> A Step 1<br> B<br> C<br> Step 2<br> Step 3<br> Step 4<br> D
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Step 2 was done incorrectly because they did not. flip the positive sign to a negative

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 If a bag contains 12 apples, 4 bananas, and 8 oranges, what is the part-to-whole ratio of oranges to all fruit?
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Step-by-step explanation:

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3 years ago
Javed downloaded from the Internet two files that had a combined size of 696 megabytes. The size of the first file was 290 megab
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Answer:

7 minutes I'm pretty sure I'm sorry if I'm not but if I'm right can I have brainliest answer?

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