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snow_lady [41]
3 years ago
15

1: Let us say that a car travels 500. mi in 7.00 hr. What is the average speed? I

Mathematics
1 answer:
Sati [7]3 years ago
8 0

Answer:

71.4 m/h to one decimal place.

Step-by-step explanation:

500/7 = 71.4 m/h.

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Income tax returns show that the mean income of self-employed persons in a particular year was £15,000, with a standard deviatio
DochEvi [55]

Answer:

Yes, There is significant difference.

Step-by-step explanation:

Null Hypothesis , H0 : Mean income = 15000

Alternate Hypothesis , H1 : Mean income  ≠  15000

t = (x - u) / ( s / √n)

x = sample mean = 14500 here, u = population mean = 15000 here ,             s = standard deviation =  975 here  , n = sample size

t = (14500 - 15000) / (975 / √169)

-500 / 75 = - 6.66

As  calculated t value in absolute terms is > 1.96 , ie tabulated value at 95% significance level (two sided). So we reject the null hypothesis in favor of alternate hypothesis. Hence, we state that 'Mean Income ≠  15000'

6 0
3 years ago
What does "What scale would be appropriate to graph the data?" mean?
shusha [124]

I think it means which graph is the best at representing the data or data set.

For example if you were to graph the population of an animal you would use a line graph to represent the data

If you were determining how much percentage you would get  a job you would use a pie graph. Etc

8 0
3 years ago
A 2 liter bottle of coke for $1.39 or a 12 pack of 12 ounce cams of pepsi for $3.49? which is the best deal
pav-90 [236]
A 2-liter bottle of Coke for $1.39 is the best deal. No need to divide.
5 0
3 years ago
Read 2 more answers
If f(x) = x^2 - 3x + 1 over 2, determine f ( 4 ) .
svet-max [94.6K]
F(x)=x^2-3x+1/2, if f(4)
Substitute x with 4, to get
f(x)=x^2-3x+1/2
f(4)=4^2-3(4)+1/2
f(4)=16-12+1/2
f(4)=4+1/2
f(4)=4 1/2 or 4.5. Hope it help!
7 0
3 years ago
What is 16.92 x 8.4 how much is the sum.
lana66690 [7]

16.92 × 8.4 = 142.128

This is called the product

6 0
3 years ago
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