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2 years ago

A tram moved upward 9 meters per second for 36 seconds. What was the total change in the tram's elevation?

Mathematics

1 answer:

anyanavicka [17]2 years ago

8 0

Answer:

324 meters.

Step-by-step explanation:

9*36 :)

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A bicycle wheel has a diameter of 24inches. <br> what is the area of the wheel?

goldfiish [28.3K]

Answer:

$\large\boxed{A=144\pi\ in^2\approx452.16\ in^2}$

Step-by-step explanation:

A diameter is two times longer than a radius. Therefore, if the diameter

d = 24in, then the radius r = (24in) : 2 = 12in.

The formula of an area of a circle:

$A=\pi r^2$

Substitute:

$A=\pi(12)^2=144\pi\ in^2$

$\pi\approx3.14$

Then

$A\approx(144)(3.14)=452.16\ in^2$

5 0

3 years ago

Which points are solutions to the linear inequality y < 0.5x + 2? Check all that apply.

marusya05 [52]

Are you given choices?
Plug in the x- and y-coordinates of the given points.
The ones that make the inequality true are solutions.

4 0

3 years ago

Read 2 more answers

A coin is loaded so that the probability of getting heads is 3/4. If the coin is flipped twice, what is the probability of getti

baherus [9]

The answer is 0.5625 or 9/16

5 0

3 years ago

Gretta has a savings account with $6,500 in it that earns 9.5% simple interest per year. How much interest, to the nearest cent,

meriva

Answer: $617.50

Step-by-step explanation:

9.5% of 6500 = 9.5*6500/100=9.5*65=617.5

So the interest is $617.5 or $617.50

Hope this helped. If you have any questions or clarifications please ask.

Thanks and please rate!

6 0

1 year ago

Read 2 more answers

The null hypothesis for an ANOVA is that all treatments/samples come from populations with the same mean. The alternative hypoth

LenKa [72]

Answer:

Alternative hypothesis: "AT LEAST ONE" of the population means is different from the others

Step-by-step explanation:

Analysis of variance (ANOVA) "is used to analyze the differences among group means in a sample".

The sum of squares "is the sum of the square of variation, where variation is defined as the spread between each individual value and the grand mean"

If we assume that we have n groups and we want to check if the population means are equal, th best way to check this it's with an ANOVA test.

The hypothesis for this case are:

Null hypothesis: $\mu_{1}=\mu_{2}=\dots =\mu_{n}$

Or in words:

Null hypothesis: All treatments/samples come from populations with the same mean

Alternative hypothesis: Not all the means are equal $\mu_{i}\neq \mu_{j}, i,j=1.2,\dots ,n$

Or we can say:

Alternative hypothesis: "AT LEAST ONE" of the population means is different from the others

8 0

3 years ago