You pick a card at random. Without putting the first card back, you pick a second card at random. 67 6171819 What is the probability of picking a 9 and then picking a 9? Write your answer as a fraction or whole number.

The frequency distribution for the given data is:

Treating the frequency distribution as a discrete distribution, we have that:

The pie chart is missing, but is given at the end of the answer.

A relative frequency is given by the number of desired outcomes divided by the number of total outcomes.

A frequency distribution is composed by the relative frequencies of each outcome. From the pie chart, we have that there is a total of 3 + 13 + 22 + 17 + 14 + 13 + 4 = 86 people, hence the frequency distribution is given as follows:

This is relevant because we want to treat the frequency distribution as a discrete distribution, taking the midpoint of each interval, hence:

Hence the mean is:

E(X) = 0.0349 x 2 + 0.1512 x 7 + 0.2558 x 12 + 0.1977 x 17 + 0.1628 x 22 + 0.1512 x 27 + 0.0465 x 32 = 16.71.

The mean is of 16.71.

The standard deviation is found as follows:

S(X) = sqrt[0.0349 x (2 - 16.71)² + 0.1512 x (7 - 16.71)² + 0.2558 x (12 - 16.71)² + 0.1977 x (17 - 16.71)² + 0.1628 x (22 - 16.71)² + 0.1512 x (27 - 16.71)² + 0.0465 x (32 - 16.71)²] = 10.95.

The standard deviation is of 10.95.

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Answer:

\(-\frac{15}{16}\)

Step-by-step explanation:

\(\frac{1}{4} ^{2}\)= \(\frac{1}{16}\)

2*(pq)= 2(\(\frac{1}{6}\))= \(\frac{1}{3}\)

-3\(q^{2}\)= -3\((\frac{4}{9} )\)= \(-\frac{4}{3}\)

\(\frac{1}{16} +\frac{1}{3}-\frac{4}{3}\)=

\(\frac{1}{16} -1\)=

\(-\frac{15}{16}\)

The equation for the relationship between the number of bracelets made and the number of beads is y = 21x.

First, the rate of change

= (483 - 210) / (23 - 10)

= 273 / 13

= 21

So, the equation for the relationship between the number of bracelets made and the number of beads used.

(y - 210) = 21 (x-  10)

y - 210 = 21x - 210

y = 21x

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Step-by-step explanation:

use algabraic expreshens it will help trust me

Answer:

three

Step-by-step explanation:

stem. is the tens place and the leaf is the. ones place

so you want to find 68 so you look in the stem column and look for six

in the row there are 6 numbers which mean:

60, 61, 67, 68, 68, 68

as you can see there is three 68 there for the answer ths 3

Answer:

Time, and Amount

Step-by-step explanation:

Well she would need to determine a time frame from within the water falling out of the tap, and how much water comes out. then she would need to observe how much water came out in that time frame, and how much time it took.

The information that Jada needs to know how fast the water comes out of her faucet include time and the amount of water.

Since Jada needs to know how fast the water comes out of her faucet include time and the amount of water. For example, let's say the amount of water coming out is 20 liters in 4 hours.

Therefore, this means the amount of water coming out per hour will be:

= 20 liters / 4 hours

= 5 liters per hour.

The main information needed is the time and the amount of water.

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Answer: I don’t know

Step-by-step explanation:

Jsjsjdjdjdjdj

Given:

Aim:

We need to find the average rate of change of f(x).

Explanation:

The formula to find the average rate of change is

Here b=5 and a=2.

Substitute x=2 in the function f(x) to find f(2).

Substitute x=5 in the function f(x) to find f(5).

The average rate of change of f(x) is -4.

Final answer:

The average rate of change of f(x) is -4.

The equation X^2/2 - 8 = 2X - 2 has two solutions, X = 6 and X = -2. These are the values of X that satisfy the equation and make both equations Y = X^2/2 - 8 and Y = 2X - 2 intersect on the graph.

To find the solutions to the equation X^2/2 - 8 = 2X - 2, we need to set the two equations equal to each other and solve for X.

The equation is:

X^2/2 - 8 = 2X - 2

To simplify the equation, let's multiply both sides by 2 to eliminate the fraction:

X^2 - 16 = 4X - 4

Next, we rearrange the equation to have all terms on one side:

X^2 - 4X - 12 = 0

Now, we can solve this quadratic equation by factoring, completing the square, or using the quadratic formula. Let's use factoring in this case:

(X - 6)(X + 2) = 0

Setting each factor equal to zero gives us two possible solutions:

X - 6 = 0 --> X = 6

X + 2 = 0 --> X = -2

So the solutions to the equation X^2/2 - 8 = 2X - 2 are X = 6 and X = -2.

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Answer:

7((x-2)(3x+4))

Step-by-step explanation:

Common factor of 7 in this quadratic formula. \(7(3x^2-2x-8)\); -8 * 3x^2 = -24x^2, now find factors of this product that equal to -2x when added. The factors that fit this is -6x and 4x. So, if you make a generic rectangle you can find the product.  You get 7((x-2)(3x+4))

Answer:

m2= 83 m1=97 m4=83

Step-by-step explanation:

m3 and m1 are corresponding by being verticle so they're the same

m3 and m2 are supple whcih mean they add to 180, so subtract 180-97 which is 83.

m2 and m4 are corresponding by being verticle so they're the same

Answer:

84

Step-by-step explanation:

Team A = 7 + b

Team B = b

b + b + 7 = 161

2b = 154

b = 77

Team A = 7 + b

b + 7 = 84

Answer:

Step-by-step explanation:

take the 142 degree angle and subtract it from 180 to find value of angle n, you will get 38. then you add 38 and 90 together to get 128. Since all angles of a triangle add up to 180. You subtract 128 from 180 to get 52.

Angle M = 52

Angle L = 90

Angle N = 38

Angle LNM = 180

Answer:

112 \(cm^{2}\)

Step-by-step explanation:

A=bh

A=14*8

A=112

Answer:

79 inches

Step-by-step explanation:

hope it helps:)

Answer:

240 min

Step-by-step explanation:

if we convert it to minutes, one pool is drained in 360 min, while using another pump requires 720 min. the problem requires them working together, so we need to find the amount of pool drained in a unit pace, being one minute. using the first pump, in 1 minute 1/360 of the pool is drained, and 1/720 for the second pump. We can add them together, thus gaining 3/720 of the pool drained in 1 minute if they are applied together. then, you calculate 720/3 to find out how many minutes it takes for the whole pool to be drained, and you get 240

Answer:

A) x=\(\sqrt{9^{2}+3^{2} }\)   B) x=9.49

Step-by-step explanation:

To divide 30 into five parts such that the first and last parts are in the ratio of 2:3, we can follow these steps:

1. Determine the ratio between the first and last parts. In this case, it is 2:3.

2. Add the ratio values together to find the total number of parts: 2 + 3 = 5.

3. Divide the total value (30) by the total number of parts (5) to find the value of each part: 30 / 5 = 6.

4. Multiply the value of each part by the respective ratio values to obtain the individual parts:

- First part: 2 * 6 = 12

- Second part: 6

- Third part: 6

- Fourth part: 6

- Last part: 3 * 6 = 18

Therefore, the five parts of 30, with the first and last parts in the ratio of 2:3, are 12, 6, 6, 6, and 18.

Answer:

No option is correct

Step-by-step explanation:

As they are written, none of them is equivalent to 3/-5

Hope this helps

Answer:

Your answer is 1500

Step-by-step explanation:

Hope this helped

Answer:

C

Step-by-step explanation:

Edge 2021

Step-by-step explanation:

when it is divided by 5 we easily know the last digit is 0 or 5

it os odd it can't divided to 2

the some of each digit is 17

so the answer will be 170

170÷5=34

170<400

1+7+0=17 true

485÷5=97

4+8+5=17

but 485>17 false

Answer:

1.75 * 0.84

Step-by-step explanation:

1.74 * 0.84 = 1.4616

1.79 * 0.69 = 1.2351

Answer:

1.74 x 0.84 is greater

Step-by-step explanation:

1.74 x 0.84 = 1.4616

while

1.79 x 0.69 = 1.23509

Answer:

3) x = -4 and y = 6

4) x = -1 and y = 0

5) x = 1 and y = -3

6) x = -4 and y = -3

Step-by-step explanation:

3) Add the equations:

(3x + 4y = 12) + (-3x - y = 6) (eliminate the x)

= 3y = 18

y = 18/3

y = 6

3x + 4(6) = 12

3x = 12 - 24

x = -12/3 = 4

4) Add the equations:

(-5x - 6y = 5) + (-6x + 6y = 6)

-11x = 11

x = -1

-5(-1) -6y = 5

-6y = 5 - 5

y = 0

5) 7x -4y = 19

10x - 2y = 16

Multiply the second equation by -2 to eliminate the y and add both equations.

-2(10x -2y = 16) =

(-20x + 4y = -32) + (7x - 4y = 19)

-13x = -13

x = 1

7(1) - 4y = 19

-4y = 19-7

y = 12/-4

y = 3

6) multiply the second equation by -2 to eliminate the x and then add the equations.

-2(5x - 3y = - 11) =

(-10x + 6y = 22) + (10x - 9y = - 13)

= -3y = 9

y = - 3

10x - 9(-3) = - 13

10x = -13 - 27

x = -40/10

x = -4

Answer:

------------------------

Find the slope of AB:

Use point-slope form and point A(2, 4) to determine the line:

Multiply both sides by 9 to clear fraction:

Open parenthesis and convert the equation into ax + by + c = 0:

The correct equivalent polynomials are,

a. (- 2 - 5x) (x² - 1) = (- 2 - 5x) (x - 1) (x + 1)

b. (- 2 + 5x) (x² - 1) = (- 2 + 5x) (x - 1) (x + 1)

What is Multiplication?

To multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.

Given that;

The polynomials are,

a. (- 2 - 5x) (x² - 1)

b. (- 2 + 5x) (x² - 1)

Now,

Solve the expression as,

a. (- 2 - 5x) (x² - 1)

Since, We know that;

⇒ a² - b² = (a - b) (a + b)

Hence, we get;

(- 2 - 5x) (x² - 1) = (- 2 - 5x) (x - 1) (x + 1)

b. (- 2 + 5x) (x² - 1)

Since, We know that;

⇒ a² - b² = (a - b) (a + b)

Hence, we get;

(- 2 + 5x) (x² - 1) = (- 2 + 5x) (x - 1) (x + 1)

Thus, The correct equivalent polynomials are,

a. (- 2 - 5x) (x² - 1) = (- 2 - 5x) (x - 1) (x + 1)

b. (- 2 + 5x) (x² - 1) = (- 2 + 5x) (x - 1) (x + 1)

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The equation we need to find will relate the amount of remaining berries to the number of batches of jam the farmer can make is 16 = 2 1/2 + 2 1/4b (option b)

To start with, we know that the farmer picks 16 quarts of berries. Out of those, 2 1/2 quarts cannot be used, which means the farmer has 16 - 2 1/2 quarts of berries that can be used to make jam.

Now, the recipe requires 2 1/4 quarts of berries to make one batch of jam. Let's represent the number of batches of jam the farmer can make with the remaining berries as "b".

Therefore, the equation we need to find will relate the amount of remaining berries to the number of batches of jam the farmer can make is written as,

=> 16 = 2 1/2 + 2 1/4b

Hence the correct option is (b).

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