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nekit [7.7K]
3 years ago
8

Write a4bc2in expanded form.

Mathematics
1 answer:
zimovet [89]3 years ago
8 0

Answer:

I'm not sure

Step-by-step explanation:

I don't even think that is possible

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A trapezoid has interior angle measures of 90,90 ,75 and X degrees. Find the measure of angle x in the trapezoid. Enter only the
alexgriva [62]

The angles inside a trapezoid add up to equal 360 degrees

X = 360-90-90-75 = 105 degrees.

7 0
2 years ago
A sample of 81 account balances of a credit company showed an average balance of $1,200 with a standard deviation of $126.
TEA [102]

Answer:

(a) Null Hypothesis, H_0 : \mu = $1,150  

    Alternate Hypothesis, H_A : \mu \neq $1,150

(b) The test statistic is 3.571.

(c) We conclude that the mean of all account balances is significantly different from $1,150.

Step-by-step explanation:

We are given that a sample of 81 account balances of a credit company showed an average balance of $1,200 with a standard deviation of $126.

We have test the hypothesis to determine whether the mean of all account balances is significantly different from $1,150.

<u><em>Let </em></u>\mu<u><em> = mean of all account balances</em></u>

(a)So, Null Hypothesis, H_0 : \mu = $1,150     {means that the mean of all account balances is equal to $1,150}

Alternate Hypothesis, H_A : \mu \neq $1,150    {means that the mean of all account balances is significantly different from $1,150}

The test statistics that will be used here is <u>One-sample t test statistics</u> as we don't know about population standard deviation;

                               T.S.  = \frac{\bar X-\mu}{\frac{s}{\sqrt{n} } }  ~ t_n_-_1

where, \bar X = sample average balance = $1,200

             s = sample standard deviation = $126

             n = sample of account balances = 81

(b) So, <u>test statistics</u>  =  \frac{1,200-1,150}{\frac{126}{\sqrt{81} } }  ~ t_8_0

                               =  3.571

The value of the sample test statistics is 3.571.

(c) <u>Now, P-value of the test statistics is given by the following formula;</u>

          P-value = P( t_8_0 > 3.571) = <u>Less than 0.05%</u>

Because in the t table the highest critical value for t at 80 degree of freedom is given between 3.460 and 3.373 at 0.05% level.

Now, since P-value is less than the level of significance as 5% > 0.05%, so we sufficient evidence to reject our null hypothesis.

Therefore, we conclude that the mean of all account balances is significantly different from $1,150.

8 0
3 years ago
A shipping container holds 144 boxes. How many boxes can be shipped in 4 containers?
WITCHER [35]

Answer:576

Step-by-step explanation:

Just do 144×4 and then you get 576 hopefully I helped

8 0
3 years ago
9,15,15,6,10,19,14,16 What is the Mean , Median , Mode and Range ?
lesya692 [45]

Answer:

The mean is 104 (Just add them all up)

The median is either 6 or 10 (its the number in the middle, sometimes there are two medians)

The mode is 15 (It shows up more than once)

The range is 13 (Take the smallest number and the highest number and subtract)

7 0
3 years ago
Read 2 more answers
Graph this line using the slope and y-intercept:
dsp73

Answer:

98765432123459 that is te answer

Step-by-step explanation:

8 0
2 years ago
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