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Artyom0805 [142]
3 years ago
6

Find the circumference for a circle pi = 3.142 diameter= 45cm​

Mathematics
2 answers:
yaroslaw [1]3 years ago
3 0

Answer:

The circumference of the circle is 141.39 cm

Step-by-step explanation:

Circumference of a circle C = \pi d or 2\pi r

If diameter d = 45 cm and \pi = 3.142

Then C = 3.142*45

C = 141.39 cm

marysya [2.9K]3 years ago
3 0

Answer:141.39

Step-by-step explanation:

To find the circumference of a circle of diameter 45cm using 3.142 as pi

C=πd

C=3.142×45cm

C=141.39cm

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A manufacturer of banana chips would like to know whether its bag filling machine works correctly at the 436.0 gram setting. It
Vilka [71]

Answer:

We conclude that the machine is under filling the bags.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 436.0 gram

Sample mean, \bar{x} = 429.0 grams

Sample size, n = 40

Alpha, α = 0.05

Population standard deviation, σ = 23.0 grams

First, we design the null and the alternate hypothesis

H_{0}: \mu = 436.0\text{ grams}\\H_A: \mu < 436.0\text{ grams}

We use one-tailed(left) z test to perform this hypothesis.

Formula:

z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }

Putting all the values, we have

z_{stat} = \displaystyle\frac{429 - 436}{\frac{23}{\sqrt{40}} } = -1.92

Now, z_{critical} \text{ at 0.05 level of significance } = -1.64

Since,  

z_{stat} < z_{critical}

We reject the null hypothesis and accept the alternate hypothesis. Thus, we conclude that the machine is under filling the bags.

8 0
3 years ago
If the square root of x is greater than x then x could be
Shtirlitz [24]
Any decimal under 1, i believe.
8 0
3 years ago
Calculate the area of a circle with a diameter of 6cm
7nadin3 [17]
Area of circle = πd²/4,    where d = diameter
 
                      = π*6*6/4 = 9π ≈ 9 *3.1416 ≈ 28.2744 cm²

Area ≈ 28.27 cm²

Hope this explains it.

4 0
3 years ago
Read 2 more answers
59:34
EastWind [94]

Answer:

planes

Step-by-step explanation:

planes are a shape or two demetional objects

8 0
3 years ago
What’s 40 41 42 43 44 45 46 47 48 49 50 IQR pls fast!!!!!
aliina [53]

Answer:

IQR = 6

Step-by-step explanation:

Given:

The given set of data is:

40 41 42 43 44 45 46 47 48 49 50

Number of terms, n=11

Therefore, the median is given as (\frac{n+1}{2})^{th} term which is the sixth term. Median = 45

(40 41 42 43 44) <u>45</u> (46 47 48 49 50 )

Now, we find the median of the lower half (Q_1) and upper half (Q_3)of the data that are before and after the median.

The lower half of the data has the values 40 41 <u>42</u> 43 44.

Number of terms are 5. So, median is the third term which is, Q_1=42

The upper half of the data has the values 46 47 <u>48</u> 49 50.

Number of terms are 5. So, median is the third term which is, Q_3=48

Now, IQR is given as the difference of upper half median and lower half median.

IQR=Q_3-Q_1\\IQR=48-42=6

4 0
3 years ago
Read 2 more answers
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