3 years ago

Which of the following expressions has a value that is less than –2?

Mathematics

1 answer:

natali 33 [55]3 years ago

3 0

Answer: A

Step-by-step explanation: 0.25−2.50=-2.25

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D/13>-3 A. D>-16 B. D>39 C. D>10 D. D>-39 Help?

mylen [45]

D/13>-3

You have to multiply 13 in both sides to eliminate the Denominator 13 on the left leaving variable D only.
(D/13)(13) > -3(13)

D > -39

so... D. D > -39

3 0

3 years ago

The proportion of items in a population that possess a specific attribute is known to be 0.45. a. If a simple random sample of s

yanalaym [24]

Answer: 0.05

Step-by-step explanation:

Sampling error is the error occurs by considering sample for study instead of entire population.

Given : The proportion of items in a population that possess a specific attribute is known to be 0.45.

Sample size : n= 100

Sample proportion of items in a population that possess a specific attribute : $\hat{p}=0.48$

Now, the formula to find the sampling error :

$\text{Sampling error} =\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$\text{Sampling error} =\sqrt{\dfrac{0.48(1-0.48)}{100}}$

$=\sqrt{\dfrac{0.48(0.52)}{100}}\\\\=\sqrt{0.002496}\approx0.05$

Hence, the sampling error =0.05

4 0

3 years ago

An arc of a circle is 3πm long, and it subtends an angle of 72° at the center of the circle. Find the radius of the circle.

Alex777 [14]

72⁰_______3π m
360⁰______15π m

C = 15π = 2π r
r = 7•5 m

8 0

3 years ago

Find the value of angle y?

tankabanditka [31]

Value of angle Y is 180-51

8 0

2 years ago

A bracelet that regularly sells for $44 is on sale for 25% off.Find the sale price of the bracelet.

a_sh-v [17]

Answer:

$33

Step-by-step explanation:

multiply 44 by 25 then divide by 100 to get $11 that's the amount that's being discounted so u subtract 44-11 ti get final answer

4 0

3 years ago

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