In the early 2016 there were about 80 devils living on Maria island.Of that total, 75% are offspring from the previous two breeding seasons. How many are offspring

Answers

Answer 1

Answer: 60 devils

Step-by-step explanation:

Question wants to know the number of offspring from the two previous breeding seasons.

There are 80 devils on the island. 75% of this 80 are from previous breeding seasons.

We need to find this 75% in whole numbers:

= Percentage of devils from previous seasons * Total number of devils

= 75% * 80 devils

= 60 devils


Related Questions

Davis has a thin box that is 5 inches wide. He wants to use the box to store markers that are 1/2 inch wide. If he lines up the markers side by side and uses the entire width of the box, how many markers can Davis fit in the box?

Answers

Answer:

10

Step-by-step explanation:

Given that :

Width of box, W = 5 inches

Width of marker to be stored in box = 1/2 inch

The number of 1/2 inch marker which can be stored in box is :

Width of box ÷ width of marker to be stored in box

5 inches ÷ 1/2 inches

5 / 0.5

= 10

Hence, Ten 1/2-inch width marker can be stored in the box

June was thinking of a number, she halves it and gets an answer of 24.3. What was the original number?

Answers

x:2=24.3
x=24.3 • 2
x=48.6
Answer is 48.6

What is the kinetic energy of a 4 kg cart pushed at a rate of 0.5 m/s?

A. 0.5J

B. 2J

C. 4J

D. 8J​

Answers

Answer:

A. 0.5J

Step-by-step explanation:

[tex]K. E._{(cart)} = \frac{1}{2} m {v}^{2} \\ \\K. E._{(cart)} = \frac{1}{2} \times 4 \times (0.5)^{2} \\ \\ K. E._{(cart)} = 2 \times 0.25 \\ \\ K. E._{(cart)} = 0.5 \: J[/tex]

The kinetic energy of a 4 kg cart pushed at a rate of 0.5 m/s is 0.5 J.

Kinetic energy = 1 /2 mv²

where

m = mass

v = velocity

Therefore,

m = 4 kg

v = 0.5

Kinetic energy = 1 / 2 × 4 × 0.5²

kinetic energy = 1 / 2 × 4 × 0.25

kinetic energy = 1 / 2 × 1

kinetic energy =  1 /2  = 0.5 j

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find each probability a coin landing heads up on every toss when it is tossed 3 times

Answers

Answer:

Their is not enough information

Step-by-step explanation:

Answer:

Step-by-step explanation:Consider coin 1:

It has to be either HEADS or TAILS (obviously). If it's a “Fair” coin the probability of getting either a Heads or Tails is (1/2) for each option.

Conclusion(so far):

Prob (Heads Coin 1) = (1/2) AND

Prob (Tails Coin 1) = (1/2)

To meet the requirements of the question, the second coin toss must have the same result as for the first coin toss.

So if the result for Coin 1 was Heads then the result for Coin 2 must also be Heads.

So

(Prob (Heads Coin 1 AND Heads Coin 2) = (Prob Heads Coin1) * (Prob Heads Coin 2) = (1/2)*(1/2) = (1/4)

Conclusion (so far) (2 coins tossed):

Prob of two coin tosses BOTH giving Heads is (1/2)*(1/2) = (1/4)

AND similarly

Prob of two coin tosses BOTH giving Tails is also (1/2)*(1/2) = (1/4)

To meet the requirements of the question, the third coin toss will, by definition be either HEADS or TAILS.

AND

Prob (Coin 3 Heads) = (1/2) AND

Prob (Coin 3 Tails) = (1/2)

The question is clear: We are asked to find the Probability that the (3 tosses) are the same.

That is, if the first toss (Coin 1) is Heads, then the results for Coin 2 and Coin 3 tosses must also be Heads.

Similarly if the the first toss (Coin 1) is Tails, then the results for Coin 2 and Coin 3 tosses must also be Tails.

So for the tosses for Coins 1, 2 and 3 to each be Heads, we have:

Prob (Coin 1 Heads, Coin 2 Heads, Coin 3 Heads) = (1/2)*(1/2)*(1/2) = (1/8)

AND

Prob (Coin 1 Tails, Coin 2 Tails, Coin 3 Tails) = (1/2)*(1/2)*(1/2) = (1/8)

There are NO OTHER NUMBER COMBINATIONS WHICH MEET THE REQUIREMENTS OF THE QUESTION other than 3 Heads AND 3 Tails.

It is important to note THAT THE SITUATIONS ABOVE (3 Heads AND 3 Tails) are BOTH VALID SOLUTIONS.

Therefore

The Probability for 3 Heads is (1/8)

AND

The Probability for 3 Tails is (1/8)

BUT BOTH THESE SOLUTIONS ARE VALID PROBABILITIES and BOTH meet the requirements of the question.

Therefore the overall probability is THE SUM OF BOTH PROBABILITIES, that is:

The probability that after 3 tosses, the tosses of each coin ALL give the same result is:

(1/8) + (1/8) = (2/8) = (1/4) or 0.25 or 25%

This means that after 3 coin tosses there is a 25% probability that we will get either 3 Heads or 3 Tails.

(A note of interest: It would be an error to ignore the fact that there are TWO valid number combinations which meet the requirements of the question, not one).

(In my analysis above I have identified ONLY the valid-number combinations and spent little time considering non-valid-number combination).


1. At best buy they have a 50" TV that sells for $1450 and is on sale for 20% and sales tax is
7.5%. What is the final cost?

Answers

i think it’s 1,247. explanation: take 20% of 1450 and subtract it since it’s on sale, giving you 1160 after subtracting 290. then, take 7.5% of 1160 and add it. 7.5% of 1160 is 87, so if you add 87 to 1160, you get $1,247. hope this helped!
$1225 that’s the answer i got it right on the plato

what is 2(3x+2)=2x+28

Answers

Answer:

x=6

Step-by-step explanation:

6x+4=2x+28

4x=24

x=6

x= 6..... i don’t have much time to explain and show why it’s the answer but i hope i’m right

Kelly sent packages to her 4 cousins. The
weight of each package was between
12.56 ounces and 15.4 ounces.
Which of the following could be the total
weight of the packages that Kelly sent?

Answers

Answer:

c

Step-by-step explanation:

got it right

Step-by-step explanation:

the total weght could be 15,4_12,56=2,84

Clay works on a farm. He packaged eggs into
containers that hold 1 dozen eggs each. He filled
4 containers with white eggs and 5 containers
with brown eggs. How many eggs did Clay
collect? Hint: one dozen eggs = 12 eggs

Answers

Answer:

(4×12)+(5×12)

48+60

108 eggs total

Answer:

108

Step-by-step explanation:

Well considering the fact that the question is asking how many eggs did Clay collect in total, we can just multiply 4*12 (12 being how many eggs being in the container and 4 being the amount of containers) and multiply 5*12 to get a total of 108 eggs. Or you could just add both the amount of containers and multiply it by 12. Hope this helped :)

What is the area of the rectangle with the given dimensions?
The dimensions of a rectangle are 2x - 5 and
3x + 3. Which expression represents the area
of the rectangle in simplest terms?

Answers

Answer:

F

Step-by-step explanation:

The area is equal to length times width.

Use the foil method to multiply (2x-5)(3x+3).

Henry is mixing concrete.
To make concrete he needs to mix cement, sand and gravel in the ratio 3 : 2 : 7 by weight.
Henry needs to make 180kg of concrete.
He has 46kg of cement, 29kg of sand and 105kg of gravel.
Which ingredient is Henry short of?

Answers

9514 1404 393

Answer:

  1 kg of sand

Step-by-step explanation:

For 180 kg of concrete using the given ratios, you need ...

  (3/12)(180 kg) = 45 kg of cement

  (2/12)(180 kg) = 30 kg of sand

  (7/12)(180 kg) = 105 kg of gravel

The inventory of 29 kg of sand is 1 kg short of the amount needed.

Henry is short 1 kg of sand.

20 equals more than a number y

Answers

Answer:

[tex]20 > y[/tex]

Step-by-step explanation:

20 is greater than y.

pls answer the image below ​

Answers

i cant see the image!

John made 12 out of 30 free throw shots. About how many out of the next 10
free throw shots would you expect him to make? *

Answers

Answer:

4/10 i believe

Step-by-step explanation:

because with his first mount of shots his percent was 12/30

so just change the denominator by dividing by 3

12/30 divided by 3...

4/10

Answer:

4/10     the answer is 4/10

A new bank customer with $4000 wants to open a money market account the bank is offering a simple interest rate of 1.5% how much interest with a customer in 20 years

Answers

Answer:

$1200

Step-by-step explanation:

Given data

Principal=$4000

Rate=1.5%

Time= 20years

The expression for simple interest is

SI= PRT/100

Substitute

SI= 4000*1.5*20/100

SI=120000/100

SI=$1200

Hence the interest is $1200

Helpppppoo plzzzzzzz

Answers

Answer:

dont mind me

Step-by-step explanation:

Answer:

b. a. c. b. c. b. c. c. a.

Step-by-step explanation:

2 3 4 5 6 7 8 9 and 10

find the value of given expression

[tex] \sqrt[3]{9 - 1} [/tex]

Answers

Answer:

2

Step-by-step explanation:

[tex] \sqrt[3]{9 - 1} \sqrt[3]{8} \\ = 2[/tex]

Calculate the area of the right - angled triangle with base of 18cm and height 6.5cm

Answers

Answer:

area = 58.5 cm²

Step-by-step explanation:

area = 18 x 6.5 x 0.5 = 58.5 cm²

Marta has 7 more than half as many books as Lucy. If L is the number of books Lucy has, which expression could be used to find the number of books Marta has?

Answers

Answer: L/2 + 7

Step-by-step explanation:

Number of books that Lucy has = L

Since Marta has 7 more than half as many books as Lucy, the expression that could be used to find the number of books Marta has will be gotten by multiplying the number of books that Marta has by 1/2 and then adding 7 to the value gotten. This will be:

= (1/2 × L) + 7

= L/2 + 7 or 0.5L + 7

find the axis of symmetry for f(x)=-3x^2+5x-6

Answers

Answer:

x= -5/6

Step-by-step explanation:

formula for axis of symmetry is

-b/2a

so,

-5/2(-3)

= -5/-6

= 5/6

pls help with this question!
thx!

Answers

Answer:

b = 37 degrees

Step-by-step explanation:

all of the angles on a triangle added up equal 180 degrees

111 degrees

32 degrees

111 + 32 = 143

180 - 143 = 37

b angle = 37 degrees

Answer: 37 degrees.

Step-by-step explanation: a triangles degrees all add up to 180 so 111+32=143 and 180-143=37 so 37 degrees.

Michael has $68. Craig has $24 less than Michael has. Michael spends $20 on a new hat. Michael has $68. Craig has $24 less than Michael has. Michael spends $20 on a new hat. Write an equation where the solution represents the amount of money (x), in dollars, craig has after michael buys the hat. Explain how you came to this equation.

Answers

Answer:

X + 4 = 48

Step-by-step explanation:

Before hat purchase :

Michael has $68

Craig has $24 less than Michael;

Hence, Craig = $68 - $24 = $44

Michael purchased hat worth, $20

x = amount Craig has after Michael purchase hat:

x = Amount Michael has - $24

Amount Michael has after hat purchase = $68 - $20 = $48

x + 4 = 44 + 4

X + 4 = 48

$1,000 at 7.5% for 30 months

Answers

Step-by-step explanation:

principal=1000

rate=7.5

time=30 moths

interest= principal multiplied to rate multiplied to time by 100

which give 100multiplied to 7.t multiplied to 30 by 10p

which gives 22500by 100

which gives 225

amount= interest plus principal

= 225+1000

=1225

What is the output, or y-value, when you input x = -2 into the function:
y = x5 + 63

Answers

Answer:

y = 31

Step-by-step explanation:

Given

y = [tex]x^{5}[/tex] + 32 ← substitute x = - 2

y = [tex](-2)^{5}[/tex] + 63 = - 32 + 63 = 31

Which of the following is true concerning the expression 5x + 7 + 2x? Please circle the correct answer.
A. 5x and 7 are like terms.
B. The simplified form of the expression is 5x + 9.
C. 5x and 2x are like terms.
D. The simplified form of the expression is 14x.

Answers

its C because both 5x and 2x have the same x at the end and their both considered like terms. so the answer would be C and if it was to be solved 5x+2x= 7x and 7+7x would be the final answer. since the 7 with no x has no x, it wouldnt have to be solved or simplified

help lol hshsjsjdjehdj

Answers

Answer:

1017.6

Step-by-step explanation:

i think, if it is asking for the original sales price

Answer:

Sale price of phone:  $640

Sale price including tax:  $678.40

Step-by-step explanation:

If the discount is 20%, the price actually paid is (100% - 20%), or 80% of full price.

Multiplying $800 by 0.80 results in the sale price:  $640.

The 6% sales tax is 0.06($640), or $38.40.

Paying $38.40 sales tax on the $640 purchase results in a total paid of $678.40.

Which one of these grids is shaded red and blue in the ratio 0.5:1?
А.
B
C
D
E
Fחד

Answers

Answer:

C

Step-by-step explanation:

0.5 red : 1 blue

1 red : 2 blue

1.5 red : 3 blue

2 red : 4 blues

2.5 red : 5 blue

3 red : 6 blue

3.5 red : 7 blue

4 red : 8 blue

(per every half a red, there is one whole blue)

C has 4 red and 8 blue

0.5 red x 8 blue = 4 red

1 blue x 8 blue = 8 blue

1. Does the following function represent exponential growth or decay?

Answers

Answer:

B - Decay

Please make my answer the brainliest!

Step by step explanation:

please help, thank youu! :)

Answers

Answer:

false is the write answer you can write it

Answer:

false

Step-by-step explanation:

if u divide y÷x each time u won't get the same answer so I t wouldn't be proportional

A book has an unknown number of pages,if you know Sue read 60 pages the first weekend she had it.She then read 1/3 of the book on the second weekend.Finally,she read the remaining 84 pages on the third weekend.Using this information,how many pages did the book have?

Answers

You must add 60 with 84 which gives you 124

How many small squares are in Step 10?

• •
Step One

• • •
• • •
Step Two

• • • •
• • • •
• • • •
Step Three​

Answers

Patterns can be defined as the sequence or arrangements which numbers follow.

The number of small squares that are in Step 10 is 110 small squares.

From the question,

Step one : • • = 1(2) small squares

Step two : • • • = 3 squares in two layers = 2(3) = 6 small squares

• • •

Step three : • • • • = 4 squares in 3 layers = 3(4) = 12 small squares

• • • •

• • • •

Let the number of steps we are to find be represented by = s

Hence, from the above pattern, the formula is given as:

Number of small squares = n x  (1 + n)

Therefore, using the formula from the pattern, the number of small squares that are in Step 10 is calculated as:

10 x (1 + 10)

= 10 x 11

= 110 small squares.

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