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Answer:

9.8.  is the Average Age
30.7 is the Variance

Step-by-step explanation:

9.8 is the Average Age and the 30.7 is the Variance.

The term variance refers to a statistical measurement of the spread between numbers in a data set.

Given that, 4 zebras at a local zoo have ages 14, 15, 9, 1,

We need to find the average age and the variance,

we know that,

Average = Sum of all the values of the set given / Number of values in the set

And,

Variance = sum of all the values of (x - means) ² / (n)

So,

Average age = 14 + 15 + 9 + 1 / 4 = 39/4 = 9.75

Variance =

(14-9.75) ² = 18.06

(15-9.75) ² = 27.56

(9-9.75) ² = 0.5625

(1-9.75) ² = 76.56

= 18.06 + 27.56 + 0.5625 + 76.56 / 4

=  30.68 ≈ 30.7

Hence, 9.8 is the Average Age and the 30.7 is the Variance.

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Answer: 9%

Step-by-step explanation:

SI = prt/100

1620 = (9000 x r x 2) / 100

Answer:

x = 0

Step-by-step explanation:

x² -16 = -16

x² = - 16 + 16

x² = 0

√x² =√0

x = 0

Answer:

C) 3

explanation:

parallel lines never touch, they are the same slope with different y-intercepts.

Right here the slope is 3, which means the slope is going to be 3

As a rule, parallel lines will always have the same slope.

The || symbol represents "parallel".

So if the slope of a line is parallel to this graph, the line

must have a slope of 3 since this line has a slope of 3.

As a quick review, remember that slope describes how steep a line is.

It can be found using the ratio rise/run between

any two points that are on that line.

Answer:

1/6 = 0.1667 = 16.67%

Step-by-step explanation:

If there are 24 students in the class and 7 of them take neither courses, we have 17 students that take one or both courses.

To find the students that took both courses, we can use the formula:

N(Spanish or French) = N(Spanish) + N(French) - N(Spanish and French)

17 = 13 + 12 - N(Spanish and French)

N(Spanish and French) = 8

Then, the number of students that are taking only French is:

N(only French) = N(French) - N(Spanish and French)

N(only French) = 12 - 8 = 4

So the probability of chosing a student that took only French is:

P(only French) = N(only French) / N(total)

P(only French) = 4 / 24 = 1/6

Answer:

-6p^5+48p

Step-by-step explanation:

-6p (p^4- 8)= -6p^5+48p

Solution,

-6p(p^4-8)

= -6p^5+48p

Hope it helps

good luck on your assignment

Answer:

8

Step-by-step explanation:

Multiply the right side by 3

3x = 24

x = 8

Answer:

x=8

Step-by-step explanation:

24 × 7 = 21 × X

168 = 21× X

168/21 = X

8 = X

Answer:

B. 4

Step-by-step explanation:

Since d=√[7-3]2+[8-8]2

Answer:

The more experiments that are done, the more the theoretical trend is marked

Step-by-step explanation:

The first thing is to define each probability,

-Theoretical probability is a proportion that expresses the ways to be successful in the total events of an experiment.

-Experimental probability is the proportion of the proposed result for the number of experimental attempts.

Based on this, the reason that best supports this is that the more the experiment is repeated, the closer the experimental probability gets to the theoretical one, since as the number of attempts increases, it tends to go more to what theoretically is what would happen.

The length of other leg is 30 ft

Look at the attached picture

Hope it helps...

Good luck on your assignment

Answer:

[tex] = 30ft[/tex]

Step-by-step explanation:

[tex]h = 34ft \\ p = 16ft[/tex]

[tex] {h}^{2} = {p}^{2} + {b}^{2} \\ {34}^{2} = {16}^{2} + {b}^{2} \\ 1156 = 256 + {b}^{2} \\ 1156 - 256 = {b}^{2} \\ 900 = {b}^{2} \\ \sqrt{900} = b \\ 30ft = b[/tex]

hope this helps

brainliest appreciated

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Answer:

1

Step-by-step explanation:

5-4=1 and assuming that by (1) you or your teacher means times 1 so 1 times 1 is one

Answer:

The answer is B.

Step-by-step explanation:

Since they all have a common denominator, you can group the numerators together. Therefore, we have...

[tex]\frac{(9x-5)+(3x-8)-(5x+3)}{4x-1}[/tex]

Now, we simply need to simplify.

[tex]=\frac{9x-5+3x-8-5x-3}{4x-1} =\frac{7x-16}{4x-1}[/tex]

This cannot be simplified further.

Answer:

Step-by-step explanation:

x-y=5

-x+y=5

or x-y=-5

so it is a system of two parallel lines.

so no solution.

or they do not intersect atmany point.

Answer:

.

Step-by-step explanation:

.

Answer: 1 -2ax²+2x-ax

Step-by-step explanation:

Hi, to answer this question we have to apply the next formula:

Area of a rectangle: length x width

Replacing with the values given:

A = (2x+1) (1-ax)

A = [2x(1)] + [2x(-ax)] +[ 1(1)]+ [1 (-ax)]

A = 2x- 2ax² +1- ax

A = 1 -2ax²+2x-ax

In conclusion, the correct option is 1 -2ax²+2x-ax

Feel free to ask for more if needed or if you did not understand something.  

Answer:

Yes

Step-by-step explanation:

400+225=625

625=25^2

Answer:

(-8,-7)

Step-by-step explanation:

assuming that the top part of the y-axis is north and the bottom part is south

we know west is to the left and that means -5 so -3-5=-8 meaning our coordinate is (-8,-7)

Answer:

47°

Step-by-step explanation:

In the picture attached, the problem is shown.

When two secants intersect at a point, the angle made is one-half of the difference between the greater arc and the minor arc formed. In this case:

∠ABC = 1/2*(arc DE - arc AC)

Replacing with data from the picture:

∠ABC = 1/2*(142° - 48°)

∠ABC = 47°

Answer:

25/36

Step-by-step explanation:

The dicisors of 12 on a die are 1,2,3,4,6

So 5/6 per die

5/6*5/6 = 25/36

Answer:4

Step-by-step explanation:

Answer:D

Step-by-step explanation:

Y=e^x

Answer:

Discount.

Explanation:

I took the test.

Please Vote Me Brainliest. Thank You.

Answer:

The graph is reflected over the x axis and shifted up three units

Answer:

Option D is correct answer AD and CD are congruent

Step-by-step explanation:

because BD is bisector of AC

so AD = CD

Answer:

Yes option D

Step-by-step explanation:

If you measure AD and DC they will be the same length

Answer:

Difference between the original and current volumes = 4013140.30 cubic feet

Step-by-step explanation:

Largest pyramid has the square base with one edge = 754 feet

Area of the square base = (Side)²

                            = (754)²

                            = 568516 square feet

Volume of the pyramid = [tex]\frac{1}{3}(\text{Area of the base})(\text{Height})[/tex]

                                       = [tex]\frac{1}{3}\times 568516\times 481[/tex]

                                       = 91152065.3 cubic feet

After erosion,

Area of the base = (745)² = 555025 square feet

Volume of the pyramid = [tex]\frac{1}{3}(555025)(471)[/tex]

                                       = 87138925 cubic feet

Difference between the original and current volumes of the pyramid

= 91152065.30 - 87138925

= 4013140.30 cubic feet

Answer:

None of these, it's $70,000.

Step-by-step explanation:

5% of $100,000 is $5,000

$5,000 · 6 (# of years) = $30,000

$100,000 - $30,000 = $70,000

Answer:

The length of the box is 10 feet.

Step-by-step explanation:

You have to work backwards to find volume, so just divide the volume (100) by the height (2) then divide that by the width (5) and you get your answer, 10

Answer:

It's A.

Step-by-step explanation:

-1 3/8  means 1 and 3/8 less than zero so  its 0 - 1 then -  another 3/8.

Answer:

a

Step-by-step explanation:

this is because a is equal to -1 +-3/8 which is -1 3/8