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GaryK [48]
3 years ago
7

An object that starts at rest accelerates until it is moving at 247 km/h. If it takes 1.7 minutes for this change to occur what

is the average acceleration in m/s? 20 PTS!

Mathematics
1 answer:
fredd [130]3 years ago
6 0

I figured out the answer Chaseashley24! The answer to your question is:

0.673 m/s²

Hope this helps!

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50.27 if pi is 3.14

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Please help me I really need help
Murljashka [212]

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A study was designed to compare the attitudes of two groups of nursing students towards computers. Group 1 had previously taken
Leviafan [203]

Answer:

a. H0:μ1≥μ2

Ha:μ1<μ2

b. t=-3.076

c. Rejection region=[tcalculated<−1.717]

Reject H0

Step-by-step explanation:

a)

As the score for group 1 is lower than group 2,

Null hypothesis: H0:μ1≥μ2

Alternative hypothesis: H1:μ1<μ2

b) t test statistic for equal variances

t=(xbar1-xbar2)-(μ1-μ2)/sqrt[{1/n1+1/n2}*{((n1-1)s1²+(n2-1)s2²)/n1+n2-2}

t=63.3-70.2/sqrt[{1/11+1/13}*{((11-1)3.7²+(13-1)6.6²)/11+13-2}

t=-6.9/sqrt[{0.091+0.077}{136.9+522.72/22}]

t=-3.076

c. α=0.05, df=22

t(0.05,22)=-1.717

The rejection region is t calculated<t critical value

t<-1.717

We can see that the calculated value of t-statistic falls in rejection region and so we reject the null hypothesis at 5% significance level.

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3 years ago
Your broker charges you 2.5% commission on the market value of bonds you buy or sell. If you wish to buy a par value $1,000 bond
Sauron [17]
B. $21.67 is the answer.
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3 years ago
Read 2 more answers
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