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4 years ago

Forty is no greater than the difference of a number and 2

2 answers:

8 0

This can be written as:
$40 \leq n - 2$

"No greater than" does not necessarily mean less than, but it just means it cannot go over. So equal to or less than.

"The difference of a number and 2" can be represented as "n - 2"

If you were to solve this inequality, you would end up getting:
$42 \leq n$ or $n \geq 42$

Hope this helps! :)

Mademuasel [1]4 years ago

5 0

40 (< or equal to) x-2 i think

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Help plz, thx urgent

Aleksandr-060686 [28]

5.trapezoid 7. Rectangle the other ones I forgot but I hope this helps

3 0

3 years ago

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Explain to Jimmy how estimating first can help him determine if his answer is reasonable his answer was 384 is at a reasonable a

goblinko [34]

Real answer
48
*26
------
1,248

Estimate
50
*25
------
1,250

So the answer is..
Estimating is helpful because it makes sure you answered correctly. No, this answer is incorrect and if he had done the estimate he could have seen how he was wrong.

3 0

3 years ago

An SRS of ten brands of breakfast cereals is tested for the number of calories per serving. The following data result: 185, 190,

Pepsi [2]

Using the t-distribution, as we have the standard deviation for the sample, it is found that the 95% confidence interval estimate for the mean number of calories for servings of breakfast cereals is (195.3, 215.7).

<h3>What is a t-distribution confidence interval?</h3>

The confidence interval is:

$\overline{x} \pm t\frac{s}{\sqrt{n}}$

In which:

$\overline{x}$ is the sample mean.
t is the critical value.
n is the sample size.
s is the standard deviation for the sample.

From the sample and the significance level of 0.05, we have that the parameters are given by:

$\overline{x} = 205.5, s = 14.2, n = 10, t = 2.2622$

Hence:

$\overline{x} - t\frac{s}{\sqrt{n}} = 205.5 - 2.2622\frac{14.2}{\sqrt{10}} = 195.3$

$\overline{x} + t\frac{s}{\sqrt{n}} = 205.5 + 2.2622\frac{14.2}{\sqrt{10}} = 215.7$

The 95% confidence interval estimate for the mean number of calories for servings of breakfast cereals is (195.3, 215.7).

More can be learned about the t-distribution at brainly.com/question/16162795

8 0

2 years ago

FGH is a right angle true or false

galina1969 [7]

Answer:

Yes

Step-by-step explanation:

f to h to g is a right triangle

8 0

3 years ago

Read 2 more answers

central angle of a sector is 72° and the sector has an area of 16.2(pie) ft^2. what is the radius of the circle?

Cloud [144]

Sector area = (central angle / 360) * PI * radius^2
sector area = (72 / 360) * PI * radius^2
radius^2 = sector area / [(72 / 360) * PI]
radius^2 = 16.2 * PI / [(1 / 5) * PI]
radius^2 = 16.2 / .2
radius^2 = 81
radius = 9

Source:
http://www.1728.org/radians.htm

6 0

4 years ago