Cheat on a test with me ;) LOL

Mathematics

2 answers:

zimovet [89]3 years ago

5 0

YEAH THAT PERSON UP THERE RIGHTDSDJ

zepelin [54]3 years ago

4 0

1. A & B & C are true.

2. A & D

3. C & D

Edit: The answers for 4 and 5 are.

4. C & D

5. C

Definition: rational numbers are numbers that could be expressed as a ratio of two integers. For example its a decimal that keeps repeating the numbers 0.555555555 (it'll keep on going.) And that's called a irrational number.

Definition: irrational numbers are numbers that keep repeating.√2, √3, √5, √11, √21, π(Pi) are all irrational. A irrational number is a real number that can't be simplified as a fraction. But 0 will always be a rational number. Anything with "π" will always be a irrational number.

Hope this helps.

In a rush rn sorry!

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PLEASE HEP ASAP!!!!!!! 30 POINTS!!!!!

anzhelika [568]

Answer:

a) 42°F < x < 176°F

b) The inequality graph is attached.

c) No, This is because at 20° F benzene would not be in liquid form but in solid form.

Step-by-step explanation:

According to the Question,

a) For the benzene to remain in liquid form, the temperature of benzene must be less than the boiling point and greater than the boiling point. Let x be the temperature of benzene, For benzene to remain as liquid, its temperature must be between:

42°F < x < 176°F

b) The inequality graph is attached. The graph shows that the temperature of benzene must be between 42°F and 176°F so that it would be a liquid. The Closed circles represent that it is greater than 2.

c) No, This is because at 20° F benzene would not be in liquid form but in solid form. Because the temperature cannot go below 42 before it freezes, she would not have been able to conduct her research .

5 0

3 years ago

A sample with a mean of m = 40 and a variance of s2 = 20 has an estimated standard error of 1 point. how many scores are in the

tamaranim1 [39]

The correct option is 20.

The score found for the sample is 20.

<h3>What is Standard error?</h3>

A standard error is a statistic that is applied to test the distribution of data. This metric is comparable to standard deviation. We can calculate the standard error if we know the sample size & standard deviation. It assesses the mean's precision.

Now, according to the question;

Sample mean; $\bar{x}=40$