A pond contains 20 tadpoles, of which f are frog tadpoles and the others are toad tadpoles. If 10 more frog tadpoles are added to the pond, the probability of catching a frog tadpole is doubled. Find f

Answers

Answer 1

Answer:

The value of f is 5

Step-by-step explanation:

Initially, the number of frog tadpoles = f

The initial probability of catching a frog tadpole = f/20

Adding 10 more frog tadpoles,

Number of frog Tadpoles = f +10

Total number of tadpoles in the pond = 20+10 = 30

new probability of catching a frog tadpole = (f+10)/30

New probability of catching a frog tadpole = 2 x Initial probability of catching a frog tadpole

(f+10)/30 = 2 x (f/20)

(f+10)/30 = f/10

f+10 = f x 30/10

f+10 = 3f

2f = 10

f = 5


Related Questions

What is the answer to this

Answers

Answer:

The domain and range are both x > -4

Step-by-step explanation:

hope it helps have a great day

plz mark brainlest!!

Solve the problem below PLease

Answers

Answer: B) y = -x^4

Work: I just plugged in the numbers into all the equations listed, and B worked correctly for them all, thus that's the correct answer.

I hope this helps, and Happy Holidays. :)

(1/2 + 3/8) x 8 evaluate using order of operation (Pls help it’s due tomorrow)

Answers

After simplifying the expression (1 / 2 + 3 / 8) × 8 , we get the result as 7.

We are given the expression:

(1 / 2 + 3 / 8) × 8

We need to evaluate the expression.

For this, we will use the rule of BODMAS.

So, first, we will solve the brackets and add the numbers.

So, we get that:

(1/2 + 3/8) × 8

= ( 4 / 8 + 3 / 8 ) × 8

= ( 7 / 8 ) × 8

Now we will multiply to get the value of the expression:

= 7

Therefore, after simplifying the expression (1 / 2 + 3 / 8) × 8 , we get the result as 7.

Learn more about expression here:

https://brainly.com/question/723406

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(15 points) plz ay help would be appreciated and brainly will be given to best answer/for e-f find the value of x,y.z in each figure

Answers

Answer:

For E, each angle is 60° because its an equilateral triangle.

F is 45° for x, 135° for y, lastly z is 22.5°

HELP ASAP!!!
When completing an autobiography template, you should never include which of the following? Accomplishment, Experiences, Family roots, Fictional dates​

Answers

Answer:

Hello The answer is D

Step-by-step explanation:

Why would you submit FICTIONAL dates for a autobiography about

your REAL life.

Who know these questions answers is

Answers

Answer:

4) The square root of 25 is rational

5) pi is irrational

Step-by-step explanation:

To know if the answer is rational or irrational, check to see if they can be turned into a fraction.

Answer:

4) [tex]\sqrt{25}[/tex]

5) [tex]\pi[/tex]

Step-by-step explanation:

4) [tex]\pi[/tex] is irrational.

[tex]\sqrt{2}[/tex] and [tex]\sqrt{3}[/tex] are also irrational.

[tex]\sqrt{25}[/tex] = 5. 5 is a whole number and thus is rational.

5) 16.5% = [tex]\frac{16.5}{100}[/tex]

0.0675 is a terminating decimal so it is rational.

8[tex]\frac{3}{4}[/tex] = 8.75 is also a terminating decimal so it is rational.

Help meeeeeeeeeeeeeee

Answers

Answer: 236?

Step-by-step explanation:

What is the difference in height between a seagull flying 11 meters above the surface of the ocean and a shark that is swimming 9 meters
below the surface?
a
2 meters
b
-2 meters
20 meters
c
d
-20 meters

Answers

Answer:

20 m

Step-by-step explanation:

If the seagull is 11 m above the surface, and the shark is 9 m below the surface, add the 11 m and 9 m to get the absolute value of the distance between the seagull and the shark

11 m + 9 m = 20 m

can someone help me don't show my math hw? ily and tysm.

Answers

Answer:

Step-by-step explanation:

16)

 [tex]\frac{4}{10} , \frac{32}{72}\\\\\frac{4}{10} = \frac{32}{72}[/tex]

Cross multiply,

4 * 72   = 32 * 10

  288   ≠   320

So, these are not in proportion.

17)

[tex]\frac{40}{25} = \frac{32}{20}[/tex]

Cross multiply,

40 * 20 = 32 * 25

800  = 800

So, these are in proportion.

18)

[tex]\frac{15}{45}=\frac{9}{c}[/tex]

Cross multiply,

15 * c = 9*45

      c = [tex]\frac{9*45}{15}[/tex]

      c = 9*3

     c = 27

19)

[tex]\frac{16}{120} = \frac{v}{15}[/tex]

Cross multiply

16 * 15 = v * 120

[tex]\frac{16*15}{120} =[/tex] v

v = 2

(-3,1) and (3.-5)

find the slope of the line
PLZ HELP ​

Answers

Answer:

Slope = ∆y/∆x

slope = ( -5_1 ) / ( 3_-3 )

slope = -6 / 6

slope = -1

Gente ayuda por faavor ,alguien lo puede resolver
Cuáles son los números enteros que cumplen con cada una de las siguientes condiciones?
a) La distancia entre dos números opuestos es 6.
b) El siguiente de su opuesto es -3.
c) La mitad de su anterior es -2.
d) El doble de su siguiente es el opuesto de 6.
e) El valor absoluto o módulo de su siguiente es menor que su anterior.

Answers

The answer for this answer would be A

Please help it’s due today

Answers

Answer:

Each person will have 6

Step-by-step explanation

each person will have 6

2.1/(x+ 1 4/5)=3/10x
what is x?

please help

Answers

The answer is 7/5. Sorry for my weird handwriting

Answer:

x=0.3

Step-by-step explanation:

Write the equation that describes the line in slope-
intercept form.
Slope = -9; Y-intercept =5/4

Answers

Answer:

y= -9x+ 5/4

Step-by-step explanation:

y=mx+b

m is slope and b is y intercept

Which statements could be represented by the expression 2(a + b)? Choose ALL correct answers.
*
2 points
The quantity a plus b doubled
The sum of a and b plus 2
Twice the quantity of a and b
The difference of a and b times 2

PLS HELP ASAP

Answers

Answer: The quantity a plus b doubled

               Twice the quantity of a and b

Step-by-step explanation: You're multiplying the sum of a and b by two. Multiplying by two and doubling is the same. Twice is a synonym for two times. there is no addition happening that involves 2 and there is no subtraction with a and b so the second and fourth choice are eliminated.

A and B if I’m right


Two communications companies offer calling plans. With Company X, it costs 30¢ to connect and
then 5e for each minute. With Company Y, it costs 20¢ to connect and then 4¢ for each minute. Write
and simplify an expression that represents how much more Company X charges, in cents, for n
minutes
Which of these expressions represents how much more Company X charges than Company Y?

OA. (30 + 4n) - (20+5n)
OB. 30n -5- 20n - 4
OC. (30n - 4) - (20n-5)
OD. (30 + 5n) - (20 + 4n)

The expression _ represents how much more Company X charges than Company Y.
(Simplify your answer.)

HELP

Answers

Answer:

D

Step-by-step explanation:

      you can model the amount that each phone plan will cost after n    minutes with these linear equations

                company X: [tex]30 + 5n[/tex]

                company Y: 20 + 4n

if you subtract the functions you can get the function for the

30 + 5n - ( 20 + 4n )

help pls and thank you!!!

Answers

Answer:

Consistent and independent

Step-by-step explanation:

The only touch at one point and they are not the same line and are not parallel

What should be added to3x+ty-3z so, that result will be 2x+5z-y9

Answers

Answer:

x+8z-9y-ty

2x+5z-9y + x-8z+9y+ty

=3x+ty-3z

Ttrrrrtyfrttfs tyjvgrt

Find angle 1

(5x+6)° and (7x-18)°

Answers

Answer:

Step-by-step explanation:

<1 is the supplement of 5x + 5.  You have to assume that the almost horizontal lines are parallel. In addition, two angles on the same side of a transversal across two parallel lines and are interior angles are supplementary.

5x + 6 + 7x - 18 = 180                   Add  like terms

12x - 12 = 180                                Add 12 to both sides

12x = 180 + 12

12x = 192                                      Divide by 12

x = 192 /12

x = 6

====================

5x + 6 = 5*12 + 6

5x + 6 = 60 + 6

5x + 6 = 66

<1 + 66 = 180

<1 = 180 - 66

<1 = 114

Can someone please help me with this question?

Answers

X = 28 hope this helps

Which of the following gives the number of ways to make a three digit walker combination out of the digits 0 to 9 if numbers cannot be repeated

P(10,3)

P(9,3)

P(10,7)

Answers

P (10,3) would be the answer. Please let me know


(2x^2+3x^3-16-8x) / (x-2)

Answers

Answer:

=3x^2+8x+8

Step-by-step explanation:

2. Use the distributive property to evaluate the expression.
A) 4(x-2)
B) 3(y+9)
C) -2(3-r)

Answers

Answer:

a) 4x-8

b) 3y + 27

c) -6 + 2r

Step-by-step explanation:

Here, we want to use the distributive property to evaluate the given expressions

Mathematically, the distributive property is;

(a + b) * c = (a * c) + (b * c)

So we use this on each of our questions;

a) 4(x-2)

= (4 * x) - (4 * 2) = 4x-8

b) 3(y + 9)

= (3 * y) + (3 * 9)

= 3y + 27

c) -2(3-r)

= (-2 * 3) - (-2 * r)

= -6 + 2r

:)()()()()()()()()()())(()()()()()()()()()helppp

Answers

Answer:

13

hope this helps you

Consider the isosceles triangle below where the side lengths are given in cm:

Part A: Is the side length √ 24 + 4 rational or irrational? Explain your reasoning.

Part B: The expression 2(√24+4)+√6 can be used to find the perimeter of the triangle. What does the "2" represent in this expression?

Part C: Write the perimeter of the triangle in simplest form. Show your work. (Remember to use units)

Answers

Answer:

I think is B

because its the one that sounds good

How do you graph this? ALSO I WILL GIVE BRAINLIEST ASWER TO FIRST PERSON TO ANSWER!!!!!!!!

Answers

Step-by-step explanation:

I have attached an image of the graph of this inequality from Desmos, a virtual graphing website to help answer your question.

However, to explain this graph, each and every x value less than or equal to 5 would be an appropriate solution to the inequality, thus all values less than or equal to 5 are shaded in.

Find the rate of change between

(-1,-4)
(3,1)

Answers

Slope formula - [tex]\frac{y2-}{x2-} \frac{y1}{x1}[/tex]

First coordinate pair - (-1, -4)

Second coordinate pair - (3, 1)

Coordinate format - (x, y)

y2=1, y1=-4

x2=3, x1=-1

[tex]\frac{1-}{3-} \frac{(-4)}{(-1)} =\frac{5}{4}[/tex]

Hope this is what your looking for :)

the slope goes by several names

• average rate of change

• rate of change

• deltaY over deltaX

• Δy over Δx

• rise over run

• gradient

• constant of proportionality

however, is the same cat wearing different costumes.

[tex](\stackrel{x_1}{-1}~,~\stackrel{y_1}{-4})\qquad (\stackrel{x_2}{3}~,~\stackrel{y_2}{1}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{1}-\stackrel{y1}{(-4)}}}{\underset{run} {\underset{x_2}{3}-\underset{x_1}{(-1)}}} \implies \cfrac{1 +4}{3 +1} \implies {\Large \begin{array}{llll} \cfrac{ 5 }{ 4 } \end{array}}[/tex]

need help! asap last minute homework

Answers

Answer:

3, 0, -5, -8, 6

Step-by-step explanation:

The domain is the x values

The range is the Y values

for example in (-2, 3)

the domain is -2 and range is 3

Which category do all of these shapes belong to?
Help

Answers

Answer:

rectangles

Step-by-step explanation:

All of these shapes belong to rectangles category.

What is rectangular shape?

A quadrilateral with parallel sides that are equal to one another and four equal vertices is known as a rectangle.

Given:

Three shapes in the form of quadrilateral are given.

From the diagrams,

the shapes have the opposite sides equal and parallel.

That means, the shapes are rectangles.

Therefore, the shapes are rectangles.

To learn more about the rectangular;

brainly.com/question/21416050

#SPJ5

HELPPPPPPPP MEEEEEEEE PLSSDDD

Answers

Answer:

156cm

470+30+8=508cm

780+90+7=877cm

560+40+8=608cm

Step-by-step explanation:

The answer would be 146 cm
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