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Nonamiya [84]
3 years ago
11

A biology class examined some flowers in a local meadow. Out of the 40 flowers they saw, 8 were perennials. What percentage of t

he flowers were perennials?
Write your answer using a percent sign (%).
Mathematics
1 answer:
Sladkaya [172]3 years ago
4 0
So first we want to say, 8 out of the 40 flowers were perennials.

8 out of 40 is 8/40, or simplified down to 1/5.

1/5 in percentage form is 20% because 1 divided by 5 = 20%.
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Please help... How many odd perfect squares are between 5 and 211?
frez [133]

Answer:

we conclude that the total number of perfect odd squares between 5 and 211 will be: 6

Step-by-step explanation:

Let us check by taking squares

  • 3² = 9
  • 5² = 25
  • 7² = 49
  • 9² = 81
  • 11² = 121
  • 13² = 169

As taking 14² = 256 would exceed 211, and 1² = 1 is smaller than 5.

Therefore, we conclude that the total number of perfect odd squares between 5 and 211 will be: 6

8 0
3 years ago
Debate the following statement: "Correlation means Causation." Determine whether this statement is true or false, and provide re
Pachacha [2.7K]

Answer:

Thats FALSE.

The concept CORRELATION not automatically means CAUSATION.

Step-by-step explanation:

Previous concepts

The correlation coefficient is a "statistical measure that calculates the strength of the relationship between the relative movements of two variables". It's denoted by r and its always between -1 and 1.

And in order to calculate the correlation coefficient we can use this formula:

r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}  

Solution to the problem

Some useful concepts are:

Correlation is a statistical measure described with a number that describes the size and direction of a relationship between two or more variables. The correlation between variables, NOT mean that the change in one variable is the cause of the change in the values of the other variable.

Causation is a term refered to one event as the result of the occurrence of the other event for example, there is a causal relationship between event A and B like a cause and effect. One important thing to mention here is that the causation is not an easy concept to measure.

"The difference between the two types of relationships are easy to identify since one can be measured with a numerical value and the other no (Here is one example: smoking causes an increase in the risk of developing lung cancer), or it can correlate with another ( smoking is correlated with alcoholism, but it does not cause alcoholism)".

So is clear that the concept CORRELATION not automatically means CAUSATION.

6 0
3 years ago
14.4 A Book and a Cake A book costs $45. Sales tax on the book is 7%. Write two different expressions that represent the final c
snow_tiger [21]

Answer: 1. $45*1.07 | $45(1.07) 2. (0.85)*32 represent the final price of the cake in dollars because (0.85) is the 15% off in decimals.

Step-by-step explanation:

1 if you multiply 45 by 1.07 it will be 48.15 and that's the final cost of the book, same with $45(1.07) is just another way to represent the multiplication.

2 As I said the 0.85 represent the 15% off, and when you multiply it will be less.

3 0
3 years ago
Here is the full question
salantis [7]
There's 10 letters in volleyball. 4 of them are l's. So 4/10.
Fraction: 4/10
Decimal: 0.4
Percent: 40%

Hope this helps! :)
8 0
3 years ago
Read 2 more answers
Petercombin8.27ouncesofstrawberrieswith6.65ouncesofblueberriestomakefuritbowls.Hepourstheequallyinto2bowlsandhas1.56ouncesofruit
Debora [2.8K]

There are 6.68 ounces of fruit in each bowl

Step-by-step explanation:

The given is

1. There are 8.27 ounces of strawberries

2. There are 6.65 ounces of blueberries

3. Peter combines them to make fruit bowls

4. He pours the quantity into 2 bowls

5. There are 1.56 ounces left over

We need to find how many ounces of fruit in each bowl

∵ There are 8.27 ounces of strawberries

∵ There are 6.65 ounces of blueberries

- Add them to find the total quantity of the fruit Peter combined

∴ The total quantity of fruit = 8.27 + 6.65

∴ The total quantity of fruit = 14.92 ounces

Subtract the quantity left over from the total quantity to find the

quantity that poured in the two bowls together

∵ There are 1.56 ounces of fruit left over

∵ The total quantity of fruit is 14.92 ounces

∴ The quantity of fruit in the 2 bowls = 14.92 - 1.56

∴ The quantity of fruit in the 2 bowls = 13.36 ounces

To find the quantity of fruit in each bowl divide the quantity of fruit

in the two bowls by 2

∵ The quantity of fruit in the 2 bowls = 13.36 ounces

∴ The quantity of fruit in each bowl = 13.36 ÷ 2

∴ The quantity of fruit in each bowl = 6.68 ounces

There are 6.68 ounces of fruit in each bowl

Learn more

You can learn more about word problems in brainly.com/question/3950386

#LearnwithBrainly

5 0
3 years ago
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