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Mrac [35]
3 years ago
13

The distance traveled by an object divided by the time in which the distance was traveled is called the ___ of the object.

Mathematics
2 answers:
Sveta_85 [38]3 years ago
8 0
I believe it is called the average speed. 
zavuch27 [327]3 years ago
5 0
the Velocity of the object
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Which expression should you simplify to find the 90% confidence interval,
Alex787 [66]

Answer:

0.45 - 1.96\sqrt{\frac{0.45(1-0.45)}{36}}=0.287

0.45 + 1.96\sqrt{\frac{0.45(1-0.45)}{36}}=0.613

And we can conclude at 95% of confidence that the true proportion of interest for this case is between 0.287 and 0.613

Step-by-step explanation:

The estimated proportion of interest is \hat p=0.45

We need to find a critical value for the confidence interval using the normla standard distributon. For this case we have 95% of confidence, then the significance level would be given by \alpha=1-0.95=0.05 and \alpha/2 =0.025. And the critical value is:

z_{\alpha/2}=-1.96, z_{1-\alpha/2}=1.96

The confidence interval for the true population proportion is interest is given by this formula:  

\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}

Replacing the values provided we got:

0.45 - 1.96\sqrt{\frac{0.45(1-0.45)}{36}}=0.287

0.45 + 1.96\sqrt{\frac{0.45(1-0.45)}{36}}=0.613

And we can conclude at 95% of confidence that the true proportion of interest for this case is between 0.287 and 0.613

8 0
3 years ago
Ned, the owner of neds shop, sells peanuts for $10 per pound and cashews for $9 per pound. Ned wants to create a 20 pound barrel
Ymorist [56]
We will use a system of equation for this one. 
P=Peanuts; C=Cashews
P+C=20
This represents the pounds.
10P+9C=191
We can make the first equation equal C.
C=20-P
10P+9(20-P)=191
10P+180-9P
P+180=191
P=11
There are 11 pounds of peanuts, which means there's 9 pounds of cashews.

4 0
3 years ago
the inflation rate of the u.s dollar is 3.8 percent. What this means is that every year, prices increase by 3.8 percent. Of a po
harkovskaia [24]
The weighted average price for all fresh vegetables was $0.64 per pound and the price difference between the most and least expensive item was $2.67 per pound
7 0
3 years ago
Select the correct answer from each drop-down menu. The base of pyramid A is a rectangle with a length of 10 meters and a width
ASHA 777 [7]

Step-by-step explanation:

The formula of a volume of a pyramid:

V=\dfrac{1}{3}BH

B - base area

H - height

H - height of pyramids

Pyramid A:

B=(10)(2)=200\ m^2

V_A=\dfrac{1}{3}(200)H=\dfrac{200}{3}H\ m^3

Pyramid B:

B=10^2=100\ m^2

V_B=\dfraC{1}{3}(100)H=\dfrac{100}{3}H\ m^3

V_A>V_B\\\\V_A=2V_B

The volume of the pyramid A is twice as large as the volume of the pyramid B.

The new height of pyramid B: 2H

The new volume:

V_{B'}=\dfrac{1}{3}(100)(2H)=\dfrac{200}{3}H\ m^3

The volume of the pyramid A is equal to the volume of the pyramid B.

3 0
3 years ago
What is the correct answer
masha68 [24]

Answer:

C it is C

Step-by-step explanation:

5 0
3 years ago
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