Use PEMDAS
P-parenthesis
E- exponents
M- multiply
D- division
A- Add
S- subtract
Answer:
Odd numbers.
Step-by-step explanation:
Closed under addition means you will able to take any two numbers from whatever set is mentioned and add them to get a number in that same set.
(If I say counting numbers, I'm still talking about the natural numbers.)
So let's look at the natural numbers {1,2,3,4,5,6,...}.
1+1=2
1+2=3
1+3=4
...
6+19=25
Let a and b be counting numbers.
a+b is still going to be a counting number.
You will always get a counting number when adding two counting numbers. So the counting numbers (also known as the natural numbers) is closed under addition.
Let's skip down to odd numbers because the other sets are similar to the first.
Let's add a pair of odd numbers.
3+5=8
8 is not odd so the odd numbers are not closed under addition because we will not always get an odd number. In fact, you will never get a odd number, but the thing is you just need one example to show it is not closed.
(2k+1)+(2a+1)
2(k+a)+2
2(k+a+1) is even so adding two odds will always give you an even.
The percent decrease of daylight on November 1,2007 is 54.67.
Step-by-step explanation:
- While finding the difference between 18.75 and 8.5 is about 10.25h.
- Percentage gives right value of increase and decrease in value.
- It is easier to calculate and understand percentage wise.
- It is imperative to start percentage by 10%,5% and 1%.
- While taking 10% of 18.75 it comes to 1.875.
- If we take 5 times of 10% it comes too 9.375h.
- It is very closer to 10.25h.
- If you take 5% it goes approximately beyond 10.25h.
- It is imperative to take less then 4% 0.75 it comes to 10.125h.
- If we take 1% 0.1875 which is again beyond 10.25h.
- It is important to take exactly 10.25h.
- If we take less then 1% about 0.67%. It is closer to 10.25h.
- 10% of 5 times 9.375 4% 0.75 and 0.67.
The critical values corresponding to a 0.01 significance level used to test the null hypothesis of ρs = 0 is (a) -0.881 and 0.881
<h3>How to determine the critical values corresponding to a 0.01 significance level?</h3>
The scatter plot of the election is added as an attachment
From the scatter plot, we have the following highlights
- Number of paired observations, n = 8
- Significance level = 0.01
Start by calculating the degrees of freedom (df) using
df =n - 2
Substitute the known values in the above equation
df = 8 - 2
Evaluate the difference
df = 6
Using the critical value table;
At a degree of freedom of 6 and significance level of 0.01, the critical value is
z = 0.834
From the list of given options, 0.834 is between -0.881 and 0.881
Hence, the critical values corresponding to a 0.01 significance level used to test the null hypothesis of ρs = 0 is (a) -0.881 and 0.881
Read more about null hypothesis at
brainly.com/question/14016208
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Do you mean
(x)(x-1) * (3x) *6
If so
X^2-x(3x)
3x^3-3x^2(6)
18x^3-12x^2
