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3 years ago

HELP!!!! My Calculator Won't Work! What is (5412^2)-(7896)?

Mathematics

2 answers:

Lapatulllka [165]3 years ago

8 0

Answer:

(5412^2)-(7896) equals 29,281,848.

Step-by-step explanation:

5,412 squared, minus 7896, equals 29,281,848.

Elina [12.6K]3 years ago

6 0

Answer:

(5412^2)-(7896)=

29281848

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Compare 9 x 104 and 5 x 103.

MrRissso [65]

<span>b.9 x 10^4 is 18 times larger than 5 x 10^3
This is a simple matter of floating point division. So let's do that. 9 x 10^4 / 5 x 10^3 First, divide the significands. Giving 9 / 5 = 1.8 And subtract the exponents 4 - 3 = 1 So the result of the division is 1.8 x 10^1 which is 18. So 9x10^4 is 18 times larger than 5x10^3. Now looking at the available options, it's obvious that only "b" is correct.</span>

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4 years ago

Read 2 more answers

Evaluate [16 ÷ (2 + 3 • 2)] + [4 • (36 – 25)]

maw [93]

Answer:

Step-by-step explanation:

There is an open + in the middle. It does not have any brackets around it. Therefore you do it at the very last.

Left side of the plus sign.

[16 ÷ (2 + 3*2)] Do the multiplication inside the parenthesis ( 2*3) first.

= [16 ÷ (2 + 6)] Add inside the parenthesis.

= [16 ÷ 8 ] Do the division

= 2

Right side of the open plus sign

[4 * (36 - 25)] Do the subtraction first.

[4 * 11 ] Do the multiplication

Now combine both right and left side.

2 + 44

The answer is 46.

8 0

3 years ago

Read 2 more answers

e chairman of the statistics department in a certain college believes that 70% of the department’s graduate assistantships are g

8_murik_8 [283]

Answer:

38.46% probability that the sample proportion will NOT be between 0.60 and 0.73

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

For a proportion p in a sample of size n, we have that $\mu = p, \sigma = \sqrt{\frac{p(1-p)}{n}}$

In this problem, we have that:

$p = 0.7, n = 50$

$\mu = 0.7, \sigma = \sqrt{\frac{0.7*0.3}{50}} = 0.0648$

What is the probability that the sample proportion will NOT be between 0.60 and 0.73?

This is 1 subtracted by the probability that it is between 0.6 and 0.73.

Probability it is between 0.6 and 0.73

pvalue of Z when X = 0.73 subtracted by the pvalue of Z when X = 0.6. So

X = 0.73

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{0.73 - 0.7}{0.0648}$

$Z = 0.46$

$Z = 0.46$ has a pvalue of 0.6772

X = 0.6

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{0.6 - 0.7}{0.0648}$

$Z = -1.54$

$Z = -1.54$ has a pvalue of 0.0618

0.6772 - 0.0618 = 0.6154

NOT be between 0.60 and 0.73?

1 - 0.6154 = 0.3846

38.46% probability that the sample proportion will NOT be between 0.60 and 0.73

5 0

4 years ago

A biology class conducts a bird count every week during the semester. Using the number of species counted each week, a student

luda_lava [24]

Answer:

A student finds a 95% confidence interval of (16.34,18.69) for the mean number of species counted. This is a valid interval because the mean number of species or any population mean does not necessarily have to be a whole number, as stated by the student.

This given confidence interval of (16.34,18.69) helps us to simply estimate the mean species counted.

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3 years ago

What is the measure of ZB?

r-ruslan [8.4K]

Answer:

b = 28

Step-by-step explanation:

131 + 21 + b = 180

152 + b = 180

b = 28

6 0

4 years ago