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

All of the following ordered pairs satisfy the function rule y = -2 x - 1 except _____.

(2, -5)
(-1, -3)
(-2, 3)
(0, -1)

Answers

Answer:

(-1, -3)

Step-by-step explanation:

You are competing in a race. The table shows the times from last year's race. You want your time to be last year's median time with an absolute deviation of at most 4 minutes. Complete the inequality to represent the time (in minutes) you hope to achieve.

Answers

Answer:28 ≤ x ≤40

Step-by-step explanation:Arrange the data from the smallest to the largest

26, 27, 28,32, 32, 33, 35, 36, 38, 40,42,48

Identify the median value

26, 27, 28,32, 32, 33, 35, 36, 38, 40,42,48

Getting the median

(33+35)/2 = 68/2 = 34 minutes

You want your time to be last year's median time with an absolute deviation of at most 6 minutes

This mean ±6 minutes, hence this will be 34 ± 6

34+6=40 and 34-6=28

The inequality will be 28 ≤ x ≤40

In a recent year, grade 8 Washington State public school students taking a mathematics assessment test had a mean score of 281 with a standard deviation of 34.4. Possible test scores could range from 0 to 500. Assume that the scores are normally distributed.



A random sample of 60 students is drawn from this population. What is the probability that the mean test score is greater than 290? Leave answers in decimal form, not percentages. Round to the nearest Hundredth (two decimal places).

Answers

Answer:

The probability that the mean test score is greater than 290

P(X⁻ > 290 ) = 0.0217

Step-by-step explanation:

Step(i):-

Mean of the Population (μ) = 281

Standard deviation of the Population = 34.4

Let 'X' be a random variable in Normal distribution

Given X = 290

[tex]Z = \frac{x -mean}{\frac{S.D}{\sqrt{n} } } = \frac{290-281}{4.44} = 2.027[/tex]

Step(ii):-

The probability that the mean test score is greater than 290

P(X⁻ > 290 ) = P( Z > 2.027)

                    = 0.5 - A ( 2.027)

                   = 0.5 - 0.4783

                   = 0.0217

The probability that the mean test score is greater than 290

P(X⁻ > 290 ) = 0.0217

What is the answer for 2/5x5/8 ?

Answers

It would be 1/4 because you would change them to a common denominator then simply them and you get 1/4

A can of paint will cover 400 square feet. What is the length of the edge of the largest square that can be painted with this can of paint?

Answers

Answer:

I believe the answer is 50 ft

Step-by-step explanation:

helppppp please I will give brainliest​

Answers

Answer:

y=3/4x

Step-by-step explanation:

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

Could anyone give a hand?

Answers

Answer: 73.5

first you work out the total area of this shape.

area: 105

this mean you can start working out the non-shaded area to do this you need to multiply 7cm with 6cm which is 42cm then you divide by 2 to get 21cm.

then to work ou the other non-shaded area in the left you multiply 3cm and 7cm together getting 21cm you then divide it and you get 10.5.

you then add 10.5cm and 21cm together to get 31.5cm, subtract that answer with the total area which gets the answer 73.5!

Please help with the problem in the picture ^ I’ll give brainliest if you give me a small explanation! :)

Answers

Answer:

X=4 6 x 4=24. so when y turns 16,  what time four gets 16? 4x4=16

Step-by-step explanation:

hope this helps

the ratio of the angles in a triangle is 3:10:7, what is the measure of the smallest angle

Answers

Answer:

27°

Step-by-step explanation:

Let the measure of the angels be 3x, 10x, 7x.

[tex]3x + 10x + 7x = 180 \degree \\ \\ 20x = 180 \degree \\ \\ x = \frac{180 \degree}{20} \\ \\ x = 9 \degree \\ smallest \: angle \: = 3x \\ \\ = 3 \times 9 \degree \\ \\ = 27 \degree[/tex]

Multiply and simplify the product. (3 – 5i)(–2 + 4i) Select the product.

Answers

Answer:

-20i^2 + 22i - 6

Step-by-step explanation:

(3 - 5i)(-2 + 4i) = -6 + 10i + 12i - 20i^2 = -20i^2 + 22i - 6

if you want to go further,

-20i^2 + 22i - 6 = -2(10i^2 - 11i + 3)

Answer:

14+22i

Step-by-step explanation:

Edge Verified

Identify the equation in slope-intercept form for the line with the given slope that contains the given point.

Slope =3/4; (2,2)

Answers

y=3/4x+1/2

Use the equation y=mx+b and plug in the coordinates and the slope into the equation.

2=3/4(2)+b

You need to find the b (y-intercept).

2=3/2+b
1/2=b

Now that you know the slope and the y-intercept the equation is y=3/4x+1/2

if a pineapple costs $p and a mango costs $q, write an algebraic expression, in dollars, in terms of p and q for the total cost of 5 pineapples and 3 mangoes

Answers

Answer: 5p + 3q

Explantation: 5 pineapples is going to be multiplied by p, the cost of 1. And 3 mangoes are going to be multiplied by q, the cost of 1. And adding the two totals together gives you the total cost.

how many 1/4 cup servings are there in 3/8 cup peanut butter?

Answers

Answer:

1.5

Step-by-step explanation:

Answer:

1.5 i think

Step-by-step explanation:

1/4:2/8 so it would be 1/4 and 1/8 or 1.5


What is the slope of the line that passes through the points (-8, 6) and (-5, -3)

Answers

Answer: slope is -3

Step-by-step explanation:

Simple, plain, easy

A table is made using the following two patterns.
Pattern x: Starting number: 1, Rule: add 1
Pattern y: Starting number: 5, Rule: add 5
Complete the table for the given patterns.
x y
1 5

Answers

Answer:

The required table will be

x       y

1        5

2       10

3       15

4       20

5       25

Step-by-step explanation:

We are given 2 patterns

Pattern x: Starting number: 1, Rule: add 1

Pattern y: Starting number: 5, Rule: add 5

We need to complete the table for given patterns

x       y

1        5

The second number for x according to pattern will be: we will add 1 to the previous number i.e 1+1 =2

The third number for x according to pattern will be: we will add 1 to the previous number i.e 2+1 =3

The second number for y according to pattern will be: we will add 5 to the previous number i.e 5+5 =10

The third number for y according to pattern will be: we will add 5 to the previous number i.e 10+5 =15

So, the required table will be

x       y

1        5

2       10

3       15

4       20

5       25

As we are not given how much we need to fill table. I am adding 4 values for x and y.

The marked price of a sweater at the clothing store was $24.
During a sale, a discount of 25% was given. A further 15%
discount was given to the customers who have the store's
credit card. How much would a member customer need to
pay for the sweater during the sale if the customer paid with
the store's credit card? Round your answer to the nearest
cent.
Enter the answer

Answers

24 x 0.75 = 18
18 x 0.85 = 15.3
Answer: Someone with the store's credit card would need to pay $15.30

The 7th grade class took a survey on their faviorte ice cream. 58 people said they perfer vanilla, while 28 people said they pefer chocolate. Write a ratio comparing chocolate to vanilla.

Answers

Answer:
58:28

Step-by-step explanation:
simplified its 29:14!

The actual distance between two cities is 2250 miles. The distance between the two cities on a map is 15 inches. What is the scale of the map?

Answers

Answer: It should be 1 in. : 150 mi.

Answer:150

Step-by-step explanation:

a year later

Write each of the following numbers as a power with an exponent to the base 2:16

Answers

Given:

The number is 16.

To find:

The given number as a power with an exponent to the base 2.

Solution:

First write the given number as the product of the prime factors.

The factor form of 16 is

[tex]16=2\times 2\times 2\times 2[/tex]

[tex]16=2^4[/tex]

Therefore, the given number 16 as a power with an exponent to the base 2 is [tex]2^4[/tex].

Answer:

2^4

Step-by-step explanation:

Unit 3 lesson 16 homework

Answers

Answer:

huh what is your question ????

The daily low temperatures from last week are shown below. (The measurement is fahrenheit)
-9, -8, -7, 8, 10, 12, 18
What is the mean low temperature of last week?
A.-2
B.6
C.8
D.10

Answers

Answer:

thx for the free points g

Answer this answer correctly and you'll get 100 points + brainiest:
Marcellus is making a deposit that will leave him with a balance of $381. He noticed that if he added $54 to the amount he started with in his account and then tripled the sum, he would get the new amount. How much did Marcellus originally have in his account?

Part A: Which equation represents the situation?

A. 3m + 54 = 381, where m represents the amount originally in his account
B. 3(m + 54) = 381, where m represents the amount originally in his account
C. 3m − 54 = 381, where m represents the amount originally in his account
D.3(m − 54) = 381, where m represents the amount originally in his account

Part B: Complete the statement to represent the solution of the equation in context.


Marcellus originally had $___________ in his account.

Answers

Answer:

B

Step-by-step explanation:

Part A:

3(m+54) = 381 shows that 54 is being added to m, the initial sum. Then it shows the sum of 54 + m being multiplied by 3 to get to the new balance of $381. This equation most accurately matches with the question.

Part B:

3(m-54) = 381.

You would first divide both sides by 3.

m - 54 = 127

You would now add 54 to both sides.

You now know m = 181.

For Carly's birthday celebration her family took her out to eat at her favorite restaurant. The total bill was $135.
Her dad wants to leave an 18% tip.
How much money is the tip?
$

Answers

I think the answer is 24.30
It would be 24.30. To get the answer, do 135 * 0.18 to get 18 percent of the 135. :)

Write the expression in simplest form.
(-11/2 x + 3) -2(-11/4x-5/2)

Answers

Answer:

8

Step-by-step explanation:

(-11/2x +3) -2(-11/4x -5/2)

(-11/2x +3) +22/4x +10/2

-11/2x +3 +11/2x +5

8

Glen got 48 out of 64 correct in his test.
What fraction of the marks did he get wrong?
Give your answer in its simplest form.

Answers

Answer:

He got 16 incorrect

Step-by-step explanation:

Answer:

fraction: 3/4

percent: 75%

Step-by-step explanation:

what is the answer to 2/3 - 4/6

Answers

Answer:

0

Step-by-step explanation:

2/3*2/2=4/6. 4/6-4/6=0

About how many centimeters larger is it ? Round to the nearest hundretdth

Answers

Answer: what is there a picture of it?

Step-by-step explanation:

In triangle PQR m angle P=60°, and m angle Q=30°, and m angle R=90°. Which of the following statements about triangle PQR are true? Check all that apply.

Answers

Answer: A, C, and F

Step-by-step explanation:

The correct statements about triangle PQR.are given by options A), B), and F) and this can be determined by using the trigonometric functions.

Given :

In triangle PQR, angle P is 60°, angle Q is 30° and angle R is 90°.

The trigonometric functions can be used in order to determine the correct statements about triangle PQR.

[tex]\rm sin30 = \dfrac{PR}{QP}[/tex]

[tex]\rm PQ = 2\;PR[/tex]

[tex]\rm cos30 = \dfrac{QR}{QP}[/tex]

[tex]\rm PR=\dfrac{\sqrt{3} }{2}\;PQ[/tex]

[tex]\rm tan30 = \dfrac{PR}{QR}[/tex]

[tex]\rm \sqrt{3}\; PR= QR[/tex]

[tex]\rm sin60 = \dfrac{QR}{PR}[/tex]

[tex]\rm QR=\dfrac{\sqrt{3} }{2} \;PR[/tex]

[tex]\rm cos60 = \dfrac{PR}{QP}[/tex]

[tex]\rm PR=2\;PQ[/tex]

[tex]\rm tan60 = \dfrac{QR}{PR}[/tex]

[tex]\rm PR=\sqrt{3} \; QR[/tex]

Therefore, the correct option A), B), and F).

For more information, refer to the link given below:

https://brainly.com/question/13710437

Linear, exponential or neither?
y= 3x² + 2x + 4
A linear
B exponential
C neither

Answers

Answer:

C

Step-by-step explanation:

neither.

linear equations have constant slope. They  take on the form of something like y= mx + b

exponential equations have a variable in the exponent. An example of this y= 3^x.

This is a polynomial equation - specifically a quadratic.  

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Recently, Apple Computers offered them a better machine at lower a price for one of the University's labs; however Mountain Home did not buy them because the _____ costs were too high.a. transactional.b. opportunity.c. marginal.d. switching. 5/6 divided by 11/13 Select all the correct answers.Terry is an up-and-coming florist who specializes in weddings. He uses 5 roses, 3 daisies, and 4 bundles of green filler to make one bouquet. If r is the cost of a rose, d is the cost of a daisy, and f is the cost of a bundle of green filler, which expression represents the cost for making 75 bouquets?75r +75d + 75f + 12(5r + 3d + 4f) + 7575(5r) + 75(3d) + 75(4f)75(5r + 3d + 4f) WILL GIVE BRAINLIEST!!!!When answering the question Where? in an anecdote, what should you remember about the form?a.) An anecdote happens in one place during one brief time period.b.) An anecdote is less about setting than about character development.c.) An anecdote should include flashbacks to other periods of time.d.) 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