If the probability that a bird will lay an egg is 75%, the probability that the egg will hatch is 50%, and the probability that the chick will be eaten by a snake before it fledges is 20%, what is the probability that a parent will have progeny that survive to adulthood?(A) 30%
(B) 14.5%
(C) 7.5%
(D) 2%

Answers

Answer 1
Answer:

Answer: (A) 30%

Step-by-step explanation:

Given : The probability that a bird will lay an egg =0.75

The probability that the egg will hatch  =0.50

Now, the probability that the egg will lay an egg and hatch = 0.75*0.50

Also,The probability that the chick will be eaten by a snake before it fledges =0.20

Then, the probability that the chick will not  be eaten by a snake before it fledges : 1-0.20=0.80

Now, the probability that a parent will have progeny that survive to adulthood will be :-

0.75*0.50*0.80=0.30=30\%

Hence, the probability that a parent will have progeny that survive to adulthood =  30%


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Simplify the following expression by using the distributive property 6(3a-4)

Answers

\huge\boxed{\boxed{Hello\:there!}}

The Distributive property states that

a(b+c)=ab+ac

Now, let's simplify:

6(3a-4)

18a-24

\huge\bold{Hope\:it\:helps\;and\;good\;luck.}

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Answer:

first you multiply 6 and 3a which equals 18a. Then you multiply 6 and 4 which equals 24. So in the end it should look like: 18a-24

What is 75 equal to?

A.) 7x 5
B. 5x5x5x5x5x5x5
C.7x7x7x7x7
D. 5 ‘7

Answers

Answer:

C

Step-by-step explanation:

you are multiplying 7 by its self 5 times

Final answer:

75 does not equal any of the options provided in the question. The calculations for each option yield numbers that are either larger or smaller than 75.

Explanation:

The number 75 can be best expressed as equal to 7x5 based on the options given in the question. Let's do a quick math check to confirm:

A) 7x5 = 35, which is not equal to 75.

B) 5x5x5x5x5x5x5 = 78125, which is much larger than 75.

C) 7x7x7x7x7 = 16807, which is also much larger than 75.

D) The last option 5 '7 does not make mathematical sense.

So, based on the calculations, none of the given options correctly express the number 75.

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What is the circumference, in centimeters, of the circle? Use 3.14 for pi (please!!)

Answers

Answer:

the diameter is 24 so the ray is 12

circonference = 2*pi*R = 2*3.14*12= 75.36

It should be 75 cm
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Write a function in terms of t that represents the situation.A population of 210,000 increases by 12.5% each year

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Answers

The exponential function is given by y = 210000(1.125)^t \n

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An exponential function is in the form:

y=ab^x

Where a is the initial value of y and b is the multiplier factor

Let y represent the population after t years.

Given an initial population of 210000, hence:

  • a = 210000

The population increases by 12.5% each year, hence:

  • b = 100% + 12.5% = 112.5% = 1.125

The exponential function is given by y = 210000(1.125)^t \n

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HELP!How do you derive the equation of a circle?
How do you identify the center and radius of a circle?
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Answers

Answer:

How do you derive the equation of a circle?

you can reverse the circle formula

How do you identify the center and radius of a circle?

You can identify the center because it is the middle of the circle and the radius can be draw from the center to the round part.

How do you define the radian measure of an angle?

it is the ratio of the length of the arc the angle forms÷the radius of the circle

How are arc length and area of a sector related to proportionality?

sector x radian

area = (r^2 x)/2

arc length = r x

they are not propotional

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Answers

The variable x equals x=7

Answer:

2x+13=4x-1

2x=14

x=7

another solution

2x+13=-(4x-1)

2x+13 =-4x+1

6x=-12

x =-2

so solutions are 7,-2