Study the following frequency distribution table.
xi 15 17 20 30 10 + f
fi 4 4 6 5 6
If the mean of the data is 18.8, then the value of f is
(A) 4 (B) 3 (C) 2 (D) 1
PLS ANSWER THIS AS QUICKLY AS POSSIBLE

Answer:

when you square root a number it can be negative or positive. squaring a number is multiplying a number by itself so 2 negatives = a positive and 2 positives = a positive. ex. (-3)x(-3)=9 as well as 3x3=9.

Step-by-step explanation:

Answer:

Absolute Value

Step-by-step explanation:

Meaning that -3 and 3 are the same distance away from the starting number or Zero

Answer:

315 and 128

Step-by-step explanation:

Answer:

315 and 128

Step-by-step explanation:

Answer: x = 1

Step-by-step explanation:

we have

x tetras

3 goldfish

5 platies.

the total number of fishh in the bowl is x + 3 + 5

The probability of removing a gold fish is equal to the number of gold fish divided by the total number of fish, this is:

p = 3/(x + 3 + 5) = 1/3

3 = (1/3)(x + 3 + 5) = x/3 + 1 + 5/3

9 = x + 3 + 5

x = 9 - 8 = 1

then wemust have that x = 1

because 1 + 3 + 5 = 9

and 3/9 = 1/3

Answer:

B.(4,20)

Step-by-step explanation:

Given: [tex]x^2 -24x = -80[/tex]

To solve the quadratic equation by completing the square, we follow these steps.

Step 1: Divide the coefficient of x by 2

[tex]-\dfrac{24}{2}=-12[/tex]

Step 2: Square your result fro Step 1

[tex](-12)^2[/tex]

Step 3: Add the result form step 2 to both sides of the equation

[tex]x^2 -24x+(-12)^2 = -80+(-12)^2[/tex]

Step 4: Rewrite the Left hand side in the form [tex](x+k)^2[/tex]

[tex](x-12)^2=-80+144\\(x-12)^2=64[/tex]

Step 5: Take square roots of both sides

[tex]x-12=\pm \sqrt{64}[/tex]

Step 6: Solve for x

[tex]x=12\pm \sqrt{64}\\=12\pm8\\x=12+8$ or x=12-8\\x=20 or x=4.[/tex]

Therefore, the solution set of the equation is (4,20).

Answer: 132

Step-by-step explanation:

C=2[tex]\pi[/tex]r

C=2[tex]\pi[/tex]21

C=131.88

Answer:

1

Step-by-step explanation:

The absolute value of -3 is just 3, because it has a distance of 3 away from 0. Therefore, [tex]\mid -3 \mid -2=3-2=1[/tex]. Hope this helps!

Answer:

88%

Step-by-step explanation:

Answer:

You'd have to look at the size of the pizza and then measure the size of the arc for each slice. The slice of pizza is how many topping is on it. The sector is how much pizza you are consuming from the center to the crust. The arc is the crust around the pizza.

Answer:

the answer in decimal form is 21.009

Answer:

= 21.009

Step-by-step explanation:

First change it to an improper fraction

= 1000 x 21 + 9

= 21009/ 1000

You then divide it by 1000 without leaving a remainder.

= 21.009

Answer:

you put a postive between your numbers

Step-by-step explanation:

[tex]\int\limits^a_b {x} \, dx[/tex] thats how it is :) XD lol

Answer:

35

Step-by-step explanation:

They told you that the mean is 7.

You know there are 5 numbers

Mean = (number 1 + number 2 + number 3 + number 4 + number 5) / 5 = 7

Sum = 7 x 5

= 35.

Answer: A.) $19.48

B.) -$1.40

C.) The sign in B, the negative, means that if the price of the share were to continue dropping, then it will become negative.

Step-by-step explanation:

A. The price per share after 5 ​hours will be $19.48.

B. It will be $19.48 per share after 23 hours if this rate​ continues.

C. The sign indicates the company is at a loss.

It is defined as the change in values of a dependent variable with respect to the independent variables.

It is given that, A​ company's stock began the day at ​$25.28 per share. That price drops by ​$1.16 each hour.

1 hour =  ​$1.16

5 hour =5 × $1.16

5 hours =$ 5.8 per share

The price drops per share after 5 ​hours are,

=$25.28-$ 5.8

=$19.48

B)

If the price drops by ​$1.16 each hour. The price after 23 hours will be,

1 hour =  ​$1.16

23 hour =23 × $1.16

23 hours =$ 26.68 per share

=$25.28 -$ 26.68

=-$1.40 per share

Thus, the price per share after 5 ​hours will be $19.48, It will be $19.48 per share after 23 hours if this rate​ continues and the sign indicates the company is at a loss.

Learn more about the rate of change here:

brainly.com/question/12786410

#SPJ5

Answer: Infinite solutions

Step-by-step explanation:

[tex]8-(2x-9)=17-2x[/tex]

Begin by distributing the negative into the parenthesis.

[tex]8-2x+9=17-2x[/tex]

Combine like terms;

[tex]17-2x=17-2x[/tex]

Subtract 17

[tex]-2x=17-17-2x[/tex]

[tex]-2x=-2x[/tex]

Add 2x

[tex]-2x+2x=0\\0=0[/tex]

Equation: 8 - (2x - 9) = 17 - 2x

First, we distribute the - sign.

8 -2x + 9 = 17 - 2x

Then, we combine like terms if there any on both sides.

17 - 2x = 17 - 2x

Now, we can see the equations are equal to each other.

However, we can go a step further and solve for x.

17 - 2x = 17 - 2x

Subtract 17 from both sides.

-2x = -2x

Divide both sides by -2.

x = x

Therefore, x has no value or is 0.

Answer:x^2=2^2+4^2. x=4.47

Step-by-step explanation:

Opposite=m=2

Adjacent=n=4

Hypotenuse=x

x^2=m^2+n^2

x^2=2^2+4^2

x^2=4+16

x^2=20

x=√20

x=4.47

Answer:

y = -3x - 9

Step-by-step explanation:

Equation of line in point slope form is given as:

[tex]y - y_1 = m(x-x_1) \\

y - 3= - 3\{x - (-4)\}\\

y - 3 = - 3(x + 4)\\

y =- 3x - 12 +3\\

y = - 3x - 9\\ is \: the \: required \: equation \\ [/tex]

Answer:

6 meters

Step-by-step explanation:

This is a 30-60-90 triange.

This triangle follows a special rule:

It's side lengths are always in the ratio of [tex]1:2:\sqrt{3\\}[/tex]

The shortest edge is 1, the hypotnuse is 2, and the longer leg is root 3.

In this triangle 3 meters corresponds with 1 part.

We are trying to find what 2 parts are.

2*3=6

So v is 6 meters.

Answer:

See explanation

Step-by-step explanation:

[tex]n^2+3n-7=2[/tex]

Subtract 2 from both sides:

[tex]n^2+3n-9=0[/tex]

Using the quadratic formula:

[tex]n=\dfrac{-3\pm\sqrt{9+36}}{2}=\dfrac{-3\pm \sqrt{45}}{2}=\dfrac{-3\pm 3\sqrt{5}}{2}[/tex]

I agree with you on the answer, have you tried both adding and subtracting the root? That is important, because there are two solutions to this problem. Feel free to discuss more and I can try to help!

Answer:

$25+$45=$70

Step-by-step explanation:

The only thing you have to do is add $25 and $45 hope this helps :)

Answer:

7110 books

Step-by-step explanation:

5%*15800=0.05*15800=790

790*11=8690

15800-8690=7110

Therefore, 7110 books

Answer: 86,900

Step-by-step explanation:

I changed the 5% into decimal form and made it 0.5. Next, I multiplied 0.5 by 11, which gave me 5.5.

15,800 x 5.5 = 86,900

So, the author would’ve sold 86,900 books in the first 11 months.

(Sorry if wrong. Yeah I think I’m wrong now because I’m not even in high school. Just ignore this lol)

Answer:

(2x+1) (2x-7)

Step-by-step explanation:

Multiply the coefficient of the first term by the constant   4 • -7 = -28

Find two factors of  -28  whose sum equals the coefficient of the middle term, which is   -12

(  -28    +    1    =    -27  

     -14    +    2    =    -12  )

Rewrite the polynomial splitting the middle term using the two factors found in step 2 above,  -14  and  2  

                    4x2 - 14x + 2x - 7

Add up the first 2 terms, pulling out like factors :

                   2x • (2x-7)

             Add up the last 2 terms, pulling out common factors :

                    1 • (2x-7)

Add up the four terms :

                   (2x+1)  •  (2x-7)

Answer:

50.052%

Step-by-step explanation:

Answer:

              32.1 g

            -----------     x 100%

(32.1 g + 16.0 g + 16.0 g)  

Explanation:

A P E X :)

Answer:

Step-by-step explanation:

i=prt

p=principal=$90,000

r=3%=0.03 annual

t=3 years

i=90,000×0.03×3=8100 $

Answer:

$98100

Step-by-step explanation:

Using the given formula :

I = P × R × T

I = 90000 × 3/100 × 3

I = $8100

He saves = 8100 + 90000 = $98100

Answer:

1,2,4,6,8

And the median can be calculated from the value in the position 3th and we got 4

[tex] Median =4[/tex]

And now using the correct dataset is: 1, 18, 6, 2, 4. And if we order the dataset we got:

1,2,4,6,18

And the median for this case again would be the value in the 3th position and we got:

[tex] Median =4[/tex]

So then we can conclude that the median is unaffected by the change of 18 instead of 8

Step-by-step explanation:

For this case we have the original dataset given:

1, 8, 6, 2, 4

And the median for this dataset can be calculated with the following dataset ordered:

1,2,4,6,8

And the median can be calculated from the value in the position 3th and we got 4

[tex] Median =4[/tex]

And now using the correct dataset is: 1, 18, 6, 2, 4. And if we order the dataset we got:

1,2,4,6,18

And the median for this case again would be the value in the 3th position and we got:

[tex] Median =4[/tex]

So then we can conclude that the median is unaffected by the change of 18 instead of 8

Answer:

x = 5

Step-by-step explanation:

15 / 3 =5

Answer:

x = 24

Step-by-step explanation:

x/4+9=15

Subtract 9 from each side

x/4+9-9=15-9

x/4 = 6

Multiply each side by 4

x/4*4 = 6*4

x = 24

Answer:

[tex]x = 24[/tex]

Step-by-step explanation:

[tex] \frac{x}{4} + 9 = 15 \\ \\ \frac{x}{4} = 15 - 9 \\ \frac{x}{4} = 6 \\ 4 \times \frac{x}{4} = 6 \times 4 \\ x = 24[/tex]

hope this helps

brainliest appreciated

good luck! have a nice day!

Answer:

36

Step-by-step explanation:

Answer:

85km/h which is 52.82mph

Step-by-step explanation:

Answer:

I believe C is the correct answer because the graph starts above 40 on y axis and D is incorrect because of the y + not y=

Answer:

2 2/3

Step-by-step explanation:

8/3= 2 2/3

Find out how many times 3 goes into 8.

3 goes into 8: 2 times

Because

3x2=6

8-6=2

Then you keep the Denominator, 8.

Answer:

For example, since the denominator of the improper fraction 8/3 goes into its numerator 2 times—in other words, since 8 ÷ 3 = 2 remainder 2—we know that the whole number part of the mixed fraction representing the improper fraction 8/3 is 2. That's half the answer

Step-by-step explanation:

Hope this helps!!!!

Answer:

A year is 12 months long. 1.5 percent each month would total 18 percent in a year. 18 percent of 1000 is 180. The final number of fish is 1180

Step-by-step explanation:

Answer:

1/6 a cup on each bowl

Step-by-step explanation:

1/2 divided by 3 is 1/6