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irina [24]
3 years ago
5

A garden contains 20 different species of plants. Five of these plants are ferns. What percent of the garden is made up if ferns

?
Mathematics
2 answers:
algol133 years ago
6 0

Answer:

25%

Step-by-step explanation:

A garden contains 20 different species of plants. Five of these plants are ferns.

Total number of species = 20

In that 20 species , 5 are ferns

WE need to find out how much percentage of 20 is 5

LEts make an equation. x be the percentage

x% of 20 is 5

\frac{x}{100} \cdot 20 = 5

\frac{x}{5}= 5

Now multiply both sides by 5

x= 25

So 25% of 20 species plans is equal to 5 ferns

777dan777 [17]3 years ago
4 0
5 out of 20 plants can be written as 5/20.  

A percentage is just a fraction with the denominator being 100.  
100 / 20 = 5. 
5 X 5 = 25
25/100

25% of the garden is made up of ferns

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A
Gre4nikov [31]

Answer:

3,25-2,5=0,75 it is equal to 3/4 so D

7 0
2 years ago
Where do the graphs of the linear equation y=2x+5 and y=-2x-3 intersect?
Aleksandr [31]
It graphs in the y=2x-3 so I say it’s d bc it is in the answer up above
6 0
3 years ago
A dentist polls his patients and finds that 83 percent brush their teeth at least twice a day, 47 percent floss daily, and 19 pe
puteri [66]

Answer:

The correct option is B. 23%

Step-by-step explanation:

Let the event that patient brushes his teeth at least twice a day is denoted by A

So, P(A) = 0.83

Let the event that patient flosses daily is denoted by B

So, P(B) = 0.47

Now, it is given that 19 percent patients brush at least twice a day and floss daily.

⇒ P(A and B) = 0.19

Now, we need to find conditional probability of occurring event B given A has occurred.

\implies P(B|A) =\frac{P(A\: and\: B)}{P(A)}\\\\\implies P(B|A) = \frac{0.19}{0.83}\\\\\implies P(B|A) = 0.2289\approx 0.23

Hence, Nearest required percentage = 23%

Therefore, The correct option is B. 23%

4 0
3 years ago
Read 2 more answers
The expression 3+(2+n) is equivalent to?
Harlamova29_29 [7]

Answer:

5+n

you have to distribute the “+” so you can drop the parenthesis. Then, you have 3+2+n. Add and you end up with 5+n

7 0
3 years ago
con que ecuacion matematica puedo lograr conseguir esta cantidad 255030 teniendo estas dos cantidades. 574821 y 174118​
AlekseyPX

Answer:

can u translate this

Step-by-step explanation:

5 0
3 years ago
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