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4 years ago

What is 2 5/6 +1 5/7

1 answer:

8 0

Hi Cherise1cherhop lets break this equation down with these steps:

1) add the whole numbers first

2) find the LCD of the fractions and that would be 42 since 42 can go into both denominators through multiplication

3) make the denominators (bottom numbers) the same as the LCD (42)

4) simplify it, now the denominators are equal

5) join the denominators together

6) simplify it (3 + 65/42)

7) convert 65/42 to mixed fraction

8) now that we made it a mixed fraction, simplify it

Answer: 4 23/42

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Use the order of operations to evaluate the expression below.<br> 15 + 25 = 5 - 48 : 6+4 - 2

GenaCL600 [577]

Answer

Step-by-step explanation:

divide 48:6 first -> 15 + 25 = 5 - 8+4 - 2

then solves the right side of this equation from left to right -> 15 + 25 = -1

add 15 + 25 -> 50 = -1

switch -1 place -> 51 = 0

7 0

3 years ago

Young's modulus is a quantitative measure of stiffness of an elastic material. Suppose that for aluminum alloy sheets of a parti

neonofarm [45]

Answer:

a1) $\mu_{\bar{X}} = 70$

a2) $\sigma_{\bar{X}} = 0.4$

b1) $\mu_{\bar{X}} = 70$

b2) $\sigma_{\bar{X}} = 0.2$

c) X is more likely to be within 1 GPa of 70 GPa in the random sample of part b because of the largeness in sample size and less scattering of data

Step-by-step explanation:

Mean value, $\mu = 70$

Standard deviation, $\sigma = 1.6$

a1) sample size, n = 16

Mean of the sampling distribution of the sample mean = mean value, i.e.

$\mu_{\bar{X}} = \mu\\\mu_{\bar{X}} = 70$

a2) The standard deviation of the sampling distribution of the sample mean

$\sigma_{\bar{X}} = \frac{\sigma}{\sqrt{n} } \\\sigma_{\bar{X}} = \frac{1.6}{\sqrt{16} }\\\sigma_{\bar{X}} = 0.4$

b1) For sample size, n = 64

Mean of the sampling distribution of the sample mean = mean value, i.e.

$\mu_{\bar{X}} = \mu\\\mu_{\bar{X}} = 70$

a2) The standard deviation of the sampling distribution of the sample mean

$\sigma_{\bar{X}} = \frac{\sigma}{\sqrt{n} } \\\sigma_{\bar{X}} = \frac{1.6}{\sqrt{64} }\\\sigma_{\bar{X}} = 0.2$

c) X is more likely to be within 1 GPa of 70 GPa in the random sample of part b because it has a larger sample size, hence a decrease in the variability. This makes us easily determine the position of the sample around the population mean

5 0

4 years ago

Solve for x <br> 4x - 3 =17

MakcuM [25]

Answer:

x = 5

Step-by-step explanation:

Add three to 17 and your answer will be 20, then divide 20 and 4 and your answer is 5

8 0

3 years ago

8x-5y=-118x−5y=−118, x, minus, 5, y, equals, minus, 11 xxx-intercept: \Big((left parenthesis ,,comma \Big))right parenthesis yyy

SOVA2 [1]

You need to put a picture on here instead of that.

6 0

3 years ago

Read 2 more answers

Flip a coin 10 times and record the observed number of heads and tails. For example, with 10 flips one might get 6 heads and 4 t

FromTheMoon [43]

Answer:

Theoretical probability = 50%

Experimental probability varies.

See below for explanation.

Step-by-step explanation:

This is a problem on theoretical and experimental probability. The results obtained would enable you understand their differences.

The theoretical probability is the result that is expected to happen, but it isn't always what eventually happens.

The theoretical probability of a coin landing on heads is ½ or 50%. This is same for tails.

The experimental probability is the probability obtained from carrying out the experiment. As this is the result of what actually happens, the experimental probability could be lesser or greater than or equal to 50%.

You are required to carry out the experiment. This is because the result would vary from person to person as well as from one experiment to the other.

First, make a table for the number of trials, outcome (head and tail each) and the frequency. Pen down the result for each of the experiment carried out. You can use a tally to make it easy for compilation.

See attachment for table.

Theoretical probability of 10 trials:

Head= 5, tail = 5

Theoretical probability of 30 trials:

Head= 15, tail = 15

Theoretical probability of 100 trials:

Head= 50, tail = 50

It all amount to 50% each

So do your experiment and record the results. Afterwards compare your result which is the experimental probability

for head and tail with the theoretical theoretical.

Also compare your result with that of your classmate.

8 0

4 years ago