All categories

3 years ago

Explain the difference between rational numbers and integers.

1 answer:

5 0

Rational numbers are positive and negative numbers that can be said or seen fully (ex. 5 or 2.391); unlike irrational numbers that go on forever like pi.

Integers are negative and positive whole numbers, that do not include fractions or decimals. (ex. -1, 0, 50, -230)

You might be interested in

Solve for r<br> n(17 + r)= 34r – r

solmaris [256]

Answer:

17n/33-n is the answer

6 0

3 years ago

A researcher is gathering data on the 50 states. She wants to actually enter the name of the state into the data matrix as one o

makvit [3.9K]

Answer: String variables

Step-by-step explanation:

SPSS means Statistical Package for Social Sciences.

The SPSS has only two variables namely:

1. String variables which includes numbers,letters and other characters.

The string variables cannot perform calculations. It is basically used to type names of people, age,occupation,home addresses,email addresses e.t.c Which is what is what the researcher was trying to do.

2. Numeric variables which include only numbers. It can perform calculations too using mathematical operations like addition,multiplication,division and subtraction.

6 0

3 years ago

Find the value of z Subscript alpha divided by 2 that corresponds to a confidence level of 89.48%.

Katyanochek1 [597]

Answer:

For this case we know that the confidence level is 89.48% or 0.8948 and the significance would be: $\alpha=1-0.8948 = 0.1052$ and the value of $\alpha/2 =0.0526$

Now we need to find a quantile in the normal standard distribution who accumulate 0.0526 of the area on each tail of the normal standard distribution and we got:

$z_{\alpha/2}= \pm 1.62015$

And we can use the following excel code for example:

"=NORM.INV(0.0526,0,1)"

Step-by-step explanation:

For this case we know that the confidence level is 89.48% or 0.8948 and the significance would be: $\alpha=1-0.8948 = 0.1052$ and the value of $\alpha/2 =0.0526$

Now we need to find a quantile in the normal standard distribution who accumulate 0.0526 of the area on each tail of the normal standard distribution and we got:

$z_{\alpha/2}= \pm 1.62015$

And we can use the following excel code for example:

"=NORM.INV(0.0526,0,1)"

4 0

3 years ago

Ivan runs each lap in 4 minutes. He will run at most 28 minutes today. What are the possible numbers of laps he will run today?

Irina-Kira [14]

Answer:

7 laps

Step-by-step explanation:

4n = 28

n = 7

hope this helps :)

7 0

3 years ago

Mark can make 42 birdays cakes in 7 days how many birthday cakes can mark make in 5 days?

iragen [17]

42 cakes in 7 days, that's 42/7= 6 cakes per day
6*5=30

8 0

3 years ago

Read 2 more answers