Answer:
The purpose of solving this problem is to determine what 9% of 891 is. One common real life problem where a solution like this may be helpful include calculating how much tip to leave at a restaurant. Solving this problem requires two simple math operations that you can perform on any calculator. The first step is a division and the second step is a multiplication. Here's a cool tip though, you can actually reverse the order of these operations and the result will be the same! Here are the steps:
Step 1: Divide 891 by 100
In this case, the number that we are "comparing" to 100 is 891, so we must first normalize the number by dividing it by 100. The operation we have to solve is this:
891
100
=
891
÷
100
=
8.91
Step 2: Multiply 8.91 by 9 to get the solution
Now that we have our normalized number, 8.91, we just have to multiply it by 9 to get our final answer. The forumla for this is obviously quite simple:
8.91
×
9
=
80.19
That's all there is to it! Note that you can replace these values with new ones from any similar problem.
Step-by-step explanation:
Answer:
10
Step-by-step explanation:
3^2 + 3(6 − 2^2) ÷ 6.
PEMDAS says parentheses first
Calculate inside the parentheses
3^2 + 3(6 − 4) ÷ 6.
3^2 + 3(2) ÷ 6.
Then exponents
9 + 3(2) ÷ 6.
Then multiply and divide from left to right
9+6 ÷ 6.
9+1
10
Answer:
2m + 20
Step-by-step explanation:
Given that:
Cost per meal = m
Tip left = $10
Total cost for each person :
m + 10
Total amount spent by the two :
2(m + 10)
2m + 20
Using a calculator, the correlation coefficient is of 0.7649. Since the correlation is greater than 0.6, there is strong correlation.
<h3>What is a correlation coefficient?</h3>
- It is an index that measures correlation between two variables, assuming values between -1 and 1.
- If it is positive, the relation is positive, that is, they are direct proportional. If it is negative, they are inverse proportional.
- If the absolute value of the correlation coefficient is greater than 0.6, the relationship is strong.
Using a calculator, we insert the points (x,y) to find the coefficient. In this problem, the points are given as follows:
(1, 5), (4, 8), (8, 3), (13, 10), (19, 13)
The coefficient is of 0.7649. Since the correlation is greater than 0.6, there is strong correlation.
More can be learned about correlation coefficients at brainly.com/question/25815006
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Answer:
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