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2 years ago

1. Solve 16+14÷2+3⋅5−11

Mathematics

1 answer:

tiny-mole [99]2 years ago

6 0

Answer:

1. 27

2.6

Step-by-step explanation:

remember the priorities of operations :

1. brackets

2. exponents

3. multiplications and divisions

4. (and truly last) additions and subtractions

so,

16 + 14÷2 + 3×5 - 11 =

16 + 7 + 15 - 11 = 23 + 4 = 27

5 coins are tossed at the same time.

each coin has a result (head or tail).

but the observed event is the sum of all tails that show when tossing the 5 coins.

so, the possible outcomes are

0 tails

1 ...

2 ...

3 ...

4 ...

5 tails

so, in total, 6 different possible outcomes.

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Both the P-value method and the critical value method use the same standard deviation based on the claimed proportion p, so they

erastova [34]

Answer:

Yes, it's also true about the confidence interval method.

Step-by-step explanation:

The confidence interval includes all the null hypothesis values for the population mean that would be accepted by the hypothesis test at the significance level of 5%. Now, it means this assumes a two-sided alternative.

Now, when testing claims about

population proportions, the critical method and the P-value method are equivalent due to the fact that they always produce the same result. Similarly, a conclusion based on a confidence interval estimate will be the same as a conclusion based on a hypothesis test.

So, Yes the confidence interval method and the P-value or critical methods will always lead to the same conclusion when the tested parameter is the standard deviation.

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3 years ago

Xavier left his house at time zero and

Lady_Fox [76]

Answer:

Graph the points, (2,18) (7, 24) and (16, 0)

Step-by-step explanation:

Going to the store takes 2 minutes for 18 blocks, which is the first point

He stays at the store for 2 minutes then takes 3 minutes to get to the bank which is 6 blocks away, add the time together and blocks, and you get the second point

He stopped at the bank for 3 minutes and the drove back home. It takes him 6 minutes to get back home, (24/6), add all the minutes together and you get 16.

(This is assuming the graph is y for blocks and x for minutes)

5 0

3 years ago

Think about parallel and perpendicular lines. In what profession might a person rely upon this information? Describe how that pe

zhannawk [14.2K]

<span>An engineer relies heavily on the use of perpendicular and parallel lines. they use these lines to draw concepts, plot graphs, and find solutions to problems that arise.</span>

7 0

4 years ago

Sophie is riding her bike home when she runs over a nail. It gets stuck to the tire of her bike but does not pop the tire. As sh

pochemuha

Answer:

a) The sinusoidal equation is;

The function is h = -24·cos[π(t )] + 24

The sketch of one full revolution is attached

b) The height of the nail at 0.8 seconds is 43.42 cm

Step-by-step explanation:

The sinusoidal equation that models the nails height can be given as follows;

y = A·cos[B(x - C)]+D

A = The amplitude = Half maximum height = 48/2 = 24 cm

The period = 2·π/B = Time to complete one oscillation = 2 seconds

∴ B = 2·π/2 = π

x = t = Time

C = The horizontal shift

D = the vertical shift = 24 cm

y = The height of the nail = h

We have;

h = -24·cos[π(t - C)] + 24

At t = 0, h = 0, therefore, we have;

0 = -24·cos[π(0 - C)] + 24

24·cos[π(0 - C)] = 24

∴ cos[π(0 - C)] = 24/24 = 1

π(0 - C) = 0

C = 0

The function is h = -24·cos[π(t )] + 24

b) The height of the nail at 0.8 seconds is given as follows;

h = -24×cos[π(0.8)] + 24 =

h = 19.42 + 24 = 43.42 cm.

3 0

3 years ago

2. What is the sum of the following: 3¾ + 1½? A. 4½ B. 7½ C. 5¼ D. 6

quester [9]

The answer is C. 51/4. Hope I helped!

5 0

4 years ago

Read 2 more answers