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4 years ago

a bicycle manufacturer needs 4 brake pads for each bicycle there 173 brake pads in stock how many bicycles can be made

1 answer:

6 0

Hey!
All you need to do is divide 173 by 4. that is 43.25. You can't have a fourth of a bicycle so you want to round down. You can make 43 bicycles.
Hope this helps!

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Jacinta is working on a jigsaw puzzle that has 403 pieces. She has completed 1/4 of the puzzle. About how many pieces has she pl

slava [35]

$403 / 4 = 100.75$
to get any fraction of a number, as long as the numerator is 1 in the fraction, just divide by the denominator. In this case it's 4. Since you can't place .75 of a puzzle piece, she's placed 100 pieces in the puzzle.

4 0

4 years ago

3.2 divided by 8.896

eimsori [14]

Answer:

2.78

Step-by-step explanation:

Hope this helps you :)

(You can also just use a calculator and type in the numbers.)

4 0

4 years ago

Read 2 more answers

Tiles identical to the one shown below are piled up one on top of another to form a tower of volume 1830 cm3. What is the height

Snezhnost [94]

Answer:

Step-by-step explanation:

In the figure attached, the tile is shown.

Data:

Volume of the tower: 1830 cm³

Area of the base of the tower: 60 cm²

Volume of the tower: height of the tower * area of the base of the tower

Replacing with data:

height of the tower = 1830/60 = 30.5 cm

4 0

4 years ago

(1 point) A noted psychic was tested for ESP. The psychic was presented with 180 cards face down and was asked to determine if t

Luba_88 [7]

Answer:

a) $z=\frac{0.239 -0.2}{\sqrt{\frac{0.2(1-0.2)}{180}}}=1.308$

b) $p_v =P(z>1.308)=0.0954$

Step-by-step explanation:

Data given and notation

n=180 represent the random sample taken

X=43 represent the correct guesses

$\hat p=\frac{43}{180}=0.239$ estimated proportion correct guesses

$p_o=0.2$ is the value that we want to test

$\alpha$ represent the significance level

z would represent the statistic (variable of interest)

$p_v$ represent the p value (variable of interest)

Concepts and formulas to use

We need to conduct a hypothesis in order to test the claim that the ture proportion is higher than 0.2 or no.:

Null hypothesis: $p=0.2$

Alternative hypothesis: $p > 0.2$

When we conduct a proportion test we need to use the z statistic, and the is given by:

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

The One-Sample Proportion Test is used to assess whether a population proportion $\hat p$ is significantly different from a hypothesized value $p_o$ .

Part a: Calculate the statistic

Since we have all the info requires we can replace in formula (1) like this:

$z=\frac{0.239 -0.2}{\sqrt{\frac{0.2(1-0.2)}{180}}}=1.308$

Part b: Statistical decision

It's important to refresh the p value method or p value approach . "This method is about determining "likely" or "unlikely" by determining the probability assuming the null hypothesis were true of observing a more extreme test statistic in the direction of the alternative hypothesis than the one observed". Or in other words is just a method to have an statistical decision to fail to reject or reject the null hypothesis.

The next step would be calculate the p value for this test.

Since is a right tailed test the p value would be:

$p_v =P(z>1.308)=0.0954$

5 0

4 years ago

To find volume and surface area of a cylinder matlab

swat32

1)Volume= π r² h
radius=r
hight=hight
2) A= 2 π r h + 2 π r²
A= surface area
r= radius
h= hight

3 0

3 years ago