You have found the following ages in years of 4 gorillas at your local zoo. What is the average age of the gorillas at your zoo? What is the variance? 7, 10, 15,21

Answers

Answer 1

Answer:

your answer is 7

Step-by-step explanation:

i may be wrong but i think that is the correct answer oh and Have a good thanksgiving everyone

Answer 2

Answer:

13.3 and 28.2 years

Step-by-step explanation:

from Khan academy


Related Questions

find the volume of the prism

Answers

Answer:

The formula for the volume of a prism is V=Bh , where B is the base area and h is the height.

Step-by-step explanation:

The volume of the prism whose length, breadth, and height are 10 inches, 4 inches, and 3 inches respectively is 120 inches².

A prism is a 3-D geometric shape that has two identical and parallel polygonal bases connected by a series of rectangular or parallelogram-shaped faces (also known as lateral faces).

As it is known that the volume of a prism is obtained by multiplying the area of the base and the height, i.e.,

Volume = area of the base × height

Also,

Area of the base = length × breadth

So,

Volume = length × breadth × height

             = 10 × 4 × 3

             = 120 square inches.

Therefore, the volume of the rectangular prism is 120 inches².

Learn more about Prism here:

https://brainly.com/question/12649592

#SPJ6

The complete question is as follows:

Find the volume of the rectangular prism whose length, breadth, and height are 10 inches, 4 inches, and 3 inches respectively.

Sum of two numbers is -32 what number is two less than the other

Answers

First no. = z

Second no. = z - 2

z + (z - 2) = -32

z + z - 2 = -32

2z - 2 = -32

2z = -32 + 2

2z = -30

z = -30/2

z = -15

First no. = -15

Second no. = -17

Donald earns $11 per hour working at the bakery.If he works for 4 hours on Saturday and 5hours on Sunday,how much money will he earn?

Answers

Answer:999

Step-by-step explanation:11x9=999

How many solutions are there?

Answers

one solution, x can only equal one thing.

Answer:

only one, as x is just one thing as in x=589247 or x=390538

Step-by-step explanation:

Zach spent $2.00 to buy 10 packs of gumHe plans to sell each pack of gum for $ 0.50. Which equation represents the profit, that Zach will make if he sells x packs of gum?

Answers

Answer:

x=$0.50 one pack for 50 cents

Step-by-step explanation:

$2.00= 10

$1.00=5

!!!!!!!!!!!!!!!plz help asap. 50 POINTS!!!!

Answers

Answer:

its c. 1,155.00

Step-by-step explanation:

The answer is B i believe

can some help me???????

Answers

I’m pretty sure it’s the third one

Please help
WILL MARK BRAINLIST

Answers

Answer:

The answer is A, 13, -13.

Step-by-step explanation:

If this helped I would appreciate it if you marked me brainliest. Thank you and have a nice day!

Answer:A 13,-13

Step-by-step explanation:

Hhhhhhhhhhhhhheeeeelllpppppp

Answers

Answer:

c

Step-by-step explanation:

The answer is C.

The difference of 9 and 4 is the same thing as 9-4 (difference means subtraction is involved). 3 times that different is (9-4) x 3, with the parentheses being necessary because of PEMDAS

whats 1+1 ( puntos gratis)

Answers

Answer:

I+I = Window

Step-by-step explanation:

Or 2

:|

I'm not too sure

Answer:

i think it's 4

Step-by-step explanation:

maybe 2

I need some help please

my answer is the one below but I'm not sure pls give work

Answers

C is the right answer

Find the probability the next person you meet was born either on a Monday or a Friday.

Answers

Answer:

Probability = 0.2857 (Approx)

Step-by-step explanation:

Given:

Total number of days in a week = 7

Monday or Friday = 2  days

Find:

Probability

Computation:

Probability = Monday or Friday / Total number of days in a week

Probability = 2/7

Probability = 0.2857 (Approx)

Is (n - 1)^2 odd or even

Answers

Answer:

even

Step-by-step explanation:

even

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[tex]If \: \: n \: \: being \: \: Even \: \: → \: \: ({n - 1})^{2} \: \: will \: \: be \: \: Odd \\ [/tex]

[tex]If \: \: n \: \: being \: \: Odd \: \: → \: \: ({n - 1})^{2} \: \: will \: \: be \: \: Even \\ [/tex]

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

Researchers doing a study comparing time spent on social media and time spent on studying randomly sampled 200 students at a major university. They found that students in the sample spent an average of 2.3 hours per day on social media and an average of 1.8 hours per day on studying. If all the students at the university in fact spent 2.2 hours per day on studying, with a standard deviation of 2 hours, the probability of getting a sample average of 1.8 or less is:________.a. 0.5893 b. 0.9977 c. 0.4207 d. 0.0023

Answers

Answer:

d. 0.0023

Step-by-step explanation:

Calculation for the probability of getting a sample average of 1.8 or less

Using this formula

z score =(X-mean)/Standard errror

Where,

Standard error =Standard deviation/√(n)

Let plug in the formula

P(Xbar<1.8)=P(Z<(1.8 hours per day -2.2 hours per day)/(2 hours /√(200))

P(Xbar<1.8)=P(Z<-0.4/(2/14.14))

=P(Z<-0.4/0.1414)

=P(Z<-2.83)

Now let find the Z score of P(Z<-2.83) using the z table

P=0.0023

Therefore the probability of getting a sample average of 1.8 or less is:0.0023

An experiment involves studying the composition of genders of a set of triplets. What is the probability that there are 2 boys and a girl in the set?

Answers

Answer:

shoot man couldnt tell ya

please help me :(
Jill, Grace, and Billy shared pennies in the ratio 2 : 4 : 4. They had a total of 120 pennies in all. How many pennies did Jill receive?

2 pennies

24 pennies

48 pennies

60 pennies

Answers

Answer:

24

Step-by-step explanation:  

Jill 2 Grace 4 Billy 4

Jill 24

Grace 48

Billy 48

Answer:

4+4+2=10

120/10=12

12*2=24

24

Step-by-step explanation:

(1,2) and parallel to 3x+4y=12

Answers

Answer:

y=-3/4x+10/4

Step-by-step explanation:

1) Change given equation to slope intercept form:

3x+4y=12

4y=12-3x

y=3-(3/4)x

y=-(3/4)x+3

2) Parallel lines have the same slope, so the first part of the equation is:

y=-(3/4)x+b

3) To find b, we plug in y=2 and x=1 given the prompt:

2=-(3/4)(1)+b

2=-3/4+b

2 3/4=b

10/4=b

4) Therefore, the correct equation is:

y=-3/4x+10/4

once again im still struggling with this

Answers

Answer:

In bold below.

Step-by-step explanation:

There are 2 whole circles shaded and the other has 3 parts out of 5 shaded.

Mixed number = 2 3/5.

Improper fraction =  13/5.

Janice had an unpaid balance of $2358.19 on her credit card statement at the beginning of January. She made a payment of $80.00 during the month, and made purchases of $99.50. If the interest rate on Janice's credit card was 4% per month on the unpaid balance, find her finance charge and the new balance on February1.

Answers

Answer:

$2,639.19

Step-by-step explanation:

Her balance at the end of the month is

$2358.19 - $80.00 + $99.50 = $2537.69

So the finance charge is 2537.69 * 0.04% = $101.50

and her new balance is $101.50 + $2537.69 = $2639.19

Is 2/15 and 3/30 proportional

Answers

Answer:

No

Step-by-step explanation:

To turn 15 into 30, you multiple 15*2=30.

If you do that to the bottom of the fraction, you should be able to do it to the top however, 2*2=4 not 3 so they are not proportional.

Can anyone help me please I don’t understand this one can you please help me I appreciate it but don’t give me the wrong answer because I need my grade to go up I’m so sorry for being picky

Answers

Answer: (-25)/(2)

Steps:  x | 0 | 2 | 4 | 6 | 8 |

          "x" has a constant rate change of +2

          y | 100 | 75 | 50 | 25 | 0 |

          "y" has a constant rate change of -25  

         

          therefore,  y/x = -25/2

brian earns 420 a daywotking at a convenience store. write an algebraic expression to represent the money hre in will earn in d days​

Answers

Answer:

420d

Step-by-step explanation:

We know that he earns 420 every day. So if we want to know how much he earns over 5 days for example, we would multiply 5 and 420...
5 X 420= 2,100
We would do the same thing no matter how many days he works.
* remember that in an algebraic expression having a variable and a constant next to each other indicates that they are being multiplied.

So we can write that as
Money earned= 420d

Which of the following values are solutions to the inequality 9 < -10 – 4x?

Answers

Answer:

ndndndndndn

Step-by-step explanation:

svhddbxbdnnddjdnfn

Whoever answers this first gets brainliest
Pls help ASAP

Answers

Answer:

Terminating goes to 3

Repeating goes to 4

Rational goes to 1

Irrational goes to  2

Answer:

1. Rational Number

2. Irrational Number

3. Terminating Decimal

4. Repeating Decimal

Step-by-step explanation:

A Rational Number can be written as a ratio of two integers. For example, as a simple fraction. That leaves us for the answer to the second one as irrational. To terminate means to end, so a terminating decimal is a decimal that does not go on forever. Whereas, a repeating decimal continues repeating forever (or indefinitely).  

I would like to apologize in advance if any of these were incorrect.

Derrick really wants to earn at least $330 at the Bike Shop this week before he goes on vacation. He earns $150 in a week plus $20 for each bicycle he assembles. Which inequality would help Derrick determine how many bicycles (b) he needs to put together?

Answers

Answer:

150 + 20x ≥ 330

Step-by-step explanation:

"At least" indicates that you should use the greater than or equal to sign. His weekly wage and the bicycle assembly money when added must be at least 330, so 150 and 20x are on the same side. The 20x represents the $20 for each bicycle multiplied by the amount of bicycles he assembled.

Please answer very urgent!! answer using a / only 1 number for each slot example:3/4: wrong tho just random number but yeah please put the correct answer

Answers

Answer:

5/6

Step-by-step explanation:

to subtract fractions you change both fractions to the same denominator. The website arealdy did it for you. The second step is to subtract the top and put it over the common denominator. 8-3 is 5. 5/6

please help this is so confusing!!!

Answers

Answer:

$16.50 on 3 bags of dog food

Step-by-step explanation:

First you would do 27.50/5 to find out how much one bag costs.

The symbol  /  mean to divide. So 27.50 divided by 5 is 5.50. We need to know the ammount of 3 bags. Hence, we evaluate 3 times 5.50 which equals to our answer, $16.50 on 3 bags of dog food. I hope this will help you succeed!

Eduardo's football team has won
9/10
of their games this season.
Write
9/10
as a decimal.
Write
9/10
as a percent.

Answers

Answer:

9/10=0.9

9/10=90%

Step-by-step explanation:

Answer:

[tex]\frac{9}{10}[/tex] = 0.9

[tex]\frac{9}{10}[/tex] = 90%

Hope this help!

Determine if parallel, perpendicular, or neither.

3y+x=12
-y=8x+1

Answers

Answer:

neither

Step-by-step explanation:

1. if to re-write the equation they will be (in standart form y=kx+b):

3y+x=12 ⇔ y=-1/3 x+12 and -y=8x+1 ⇔ y= -8x-1

2. if the lines are parallel, then k₁=k₂, but k₁=-1/3 and k₂=-8 (k₁≠k₂);

3. if the lines are perpendicular, then k₁*k₂= -1, but k₁*k₂=8/3≠ -1;

4. finally, neither.

Solve for x. Geometry problem.

Answers

Answer:

12.33

Step-by-step explanation:

6x - 2 + 9x - 3 = 180° (linear pair)

6x + 9x - 2 - 3 = 180°

15x - 5 = 180°

15x = 180 + 5

15x = 185

x = 185/15

x = 12.33

hope this helps you!

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