please help me asap​

Answer:

A) dV/dt = the rate of change of the given volume of water in the tank with respect to the time, t.

dH/dt = the rate of change of the height of the water in the tank with respect to the time

B) dV/dt is positive

C) dH/dt is positive

Step-by-step explanation:

We are given that;

V(t) is the volume of water in the tank and H(t) is the height of the water level at time t. Thus;

A) dV/dt = the rate of change of the given volume of water in the tank with respect to the time, t.

dH/dt = the rate of change of the height of the water in the tank with respect to the time

B) When the tank is one-fourth full, dV/dt is positive because the volume water in the tank is increasing with time.

C) when the tank is one-fourth full, dH/dt is positive because the height has increased from zero level to 0.25 times the height of the tank. Thus the height is increasing with time.

Answer:

1.66

Step-by-step explanation:

The mean of a set of data is 4.68 and its standard deviation is 2.83. Find the z score for a value of 9.38

Given that :

Mean (m) = 4.68

Standard deviation (s) = 2.83

Value of x = 9.38

Zscore = (x - mean) / standard deviation

Zscore = (9.38 - 4.68) / 2.83

Zscore = 4.7 / 2.83

Zscore = 1.6607773

Hence, Zscore for a value of 9.38 is 1.66

===================================================

Explanation:

For any triangle, the interior angles always add to 180

(angle1)+(angle2)+(angle3) = 180

(w) + (4w-6) + (w) = 180

(w+4w+w) - 6 = 180

6w - 6 = 180

6w - 6+6 = 180+6 .... adding 6 to both sides

6w = 186

6w/6 = 186/6 ..... divide both sides by 6

w = 31

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

Extra info:

This value of w leads to

4w-6 = 4*31-6 = 118

The three angles of the triangle are: 31, 118, 31

Because we have two congruent angles, this means the triangle is isosceles. The sides opposite the congruent angles are the same length.

Answer:

y=-4x+5...

Step-by-step explanation:

y=-4x+5...

Answer: -18

Step-by-step explanation: if a=6 then the equation would be (6) - 24 which is -18

Answer: 23.20 dollars

Cost for 1 shirt = $14.63

Cost for 1 visor = $8.57

Total = 14.63+8.57 = 23.20

==============================================================

Explanation:

s = cost of 1 shirt

v = cost of 1 visor

costs are in dollars

There are 43 players and 2 coaches that get a shirt. There are 43+2 = 45 people total that get a shirt. The amount of money spent on all the shirts is 45s because we multiply the number of people (45) with the cost per shirt (which is s). Set this equal to 658.35 and solve for s

45s = 658.35

s = 658.35/45

s = 14.63

Each shirt costs $14.63, and this is the amount each player should pay.

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

Kenny is also ordering 43 visors. The total cost here is 368.51 dollars. This means the equation we need to solve is 43v = 368.51

Divide both sides by 43 to isolate v

43v = 368.51

v = 368.51/43

v = 8.57

Each visor costs $8.57, and this is the amount each player should pay.

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

Add up the two costs we found and we get 14.63+8.57 = 23.20, which is the total cost each player must pay for both a shirt and a visor.

Answer:

Cheerleader :))

Step-by-step explanation:

Answer:

composite

Step-by-step explanation:

Answer:

50 is composite

Step-by-step explanation:

it is even:)

Answer:

Scott will take 221 minutes to run 52 km

Step-by-step explanation:

Speed

The speed of an object can be calculated with the formula:

[tex]\displaystyle v=\frac{d}{t}[/tex]

Where d is the distance traveled and t is the time taken.

Scott can run d=20 km in 85 minutes. Thus, his speed is:

[tex]\displaystyle v=\frac{20}{85}\ km/min[/tex]

Now he wants to know how many minutes it will take him to run d=52 km. Solving the formula for t:

[tex]\displaystyle t=\frac{d}{v}[/tex]

Since the speed has been already determined:

[tex]\displaystyle t=\frac{52}{\frac{20}{85}}[/tex]

Multiplying by the reciprocal of the denominator:

[tex]\displaystyle t=52*\frac{85}{20}[/tex]

t = 221 min

Scott will take 221 minutes to run 52 km

Answer:

221 min

Step-by-step explanation:

eligible on khan academy

Answer:

First question: 1.4

Second question: Option 3

Step-by-step explanation:

First question:

You simplify the left equation first,

-0.4 x -3.5 = 1.4 , -0.4 x 2.9 = -1.16

1.4k - 1.16

For this to equal the right equation, the number missing must be 1.4.

Second question:

You simplify the equation given to you first,

1/4 x 8 = 2 , 1/4 x 12 = 3

2x + 3

The option that is equivalent to the answer is option 3; 2x + 3

Answer:

0.9266

Step-by-step explanation:

Given the data:

Shoe size x :

8.5

9

9

9.5

10

10

10.5

10.5

11

11

11

12

12

12.5

Height y :

66

68.5

67.5

70

70

72

71.5

70

71

71.5

73

73.5

74

74

The correlation Coefficient obtained from the online Coefficient of regression calculator is 0.9266 which depicts a strong positive relationship between shoe size and height

The correlation coefficient for the data is 0.93 and this can be determined by using the formula of the correlation coefficient.

Given :

The table shows data collected from 14 people.

A statistical measure of the strength of the relative movement between two variables is known as the correlation coefficient.

The formula of the correlation coefficient is given by:

[tex]\rm r = \dfrac{\sum (x_i-\bar{x})(y_i-\bar{y})}{\sqrt{\sum(x_i-\bar{x})^2\sum(y_i-\bar{y})^2} }[/tex]

where r is the correlation coefficient, [tex]\bar{x}[/tex] is the mean of the values of the x variable, [tex]x_i[/tex] values of the x-variable in the sample space, [tex]y_i[/tex] values of the y-variable in a sample space, and [tex]\bar{y}[/tex] is the mean of the values of the y-variable.

Now, from the attached table substitute the values of the known terms in the above formula.

[tex]\rm r = \dfrac{35.4464286}{\sqrt{(19.23214289)\times (76.08928571)} }[/tex]

Simplify the above expression.

[tex]\rm r = \dfrac{35.4464286}{38.25388889} }[/tex]

r = 0.93

So, the correlation coefficient for the data is 0.93.

For more information, refer to the link given below:

https://brainly.com/question/17716064

Answer:

-5

Step-by-step explanation:

coefficient of b is -5

Answer:

Im a little confused what this question is asking, but the number in billions is simply 89.61416 if the original number is in thousands! Hope that helps and if that was not what you were looking for, let me know. :)

Step-by-step explanation:

Answer:

It is estimated that the population of the world reached one billion for the first time in 1804. It was another 123 years before it reached two billion in 1927, but it took only 33 years to rise by another billion people, reaching three billion in 1960.

Answer:

6/3 or 2?

Step-by-step explanation:

i am not completely sure though. I went purely based off of MN/RS, which gave me the ratio 6/3. That also equals 2.

Answer:

c. 30x+80y-15z.

Step-by-step explanation:

Answer:

CCCCCCCCCCCC

Step-by-step explanation:

Answer:

im so srry 25 im not sure

Step-by-step explanation:

i need points :(

Answer:

You look very nice!

Step-by-step explanation:

it matters what you look like to yourself not how you look to others!

Answer:

Step-by-Use the drop-down menus to label the points on the number line.

Point A is at . - 1 2/4

Point B is at . - 3/4

Point C is at 3/4.    

Point D is at  explanation:1 3/4

The position of the points A, B, C, and D on the number line will be –3/2, –3/4, 3/4, and 7/4.

Coordinate geometry is the study of geometry using the points in space.

The number line is shown below.

From the figure, we can observe that there are 4 sections between each successive numbers.

The point A is at –1 2/4 that is –3/2.

The point B is at –3/4.

Then the point C is at 3/4.

And the point D is at 1 3/4 that is 7/4.

More about the coordinate geometry link is given below.

https://brainly.com/question/1601567

#SPJ2

Answer:

when x is 1 y is 7

when x is 2 y is 10

when x is 3 y is 13

Step-by-step explanation:

Answer:

Step-by-step explanation:

Contribution by each:

Equal contribution is:

Returned by first and second person:

Ratio of returned amount:

Answer:

point

Step-by-step explanation:

Answer:

90 degree angle

Step-by-step explanation:

Step-by-step explanation:

Triangles ABC and DEF are congruent.

The letter B is the 2nd letter in 'ABC'.

Likewise, the letter E is the 2nd letter in 'DEF'.

Therefore Angle B = Angle E.

Answer:

X = 50

Step-by-step explanation:

2x-x = 40 + 10

X =50

Take the x to be on the same sides and the normal numbers in the other side. Then work them out.

Answer:

[tex]y=-45[/tex]

Step-by-step explanation:

[tex]\frac{y}{9}+5=0[/tex]

[tex]\frac{y}{9}=-5[/tex]

[tex]y=-45[/tex]

Answer:

for the first one its C,D and E

but for the second one i dont

know so sorry

Step-by-step explanation:

Answer:

48 ways

Step-by-step explanation:

Given

[tex]Girls = \{Ava, Cara, Emma, Lily, Mia\}[/tex]

[tex]Together= \{Emma, Lily\}[/tex]

Required

Determine the number of sitting arrangements

The number of girls are 5, of which 2 must be seated together.

First, Emma and Lily can be arranged in 2! ways

Next, we consider Emma and Lily as one, so there are (5 - 1) girls left to be arranged.

This can be done in (5 - 1)! ways

Total number of ways is then calculated as:

[tex]Ways = 2! * (5 - 1)![/tex]

[tex]Ways = 2! * 4![/tex]

[tex]Ways = 2 * 1 * 4 * 3 *2 * 1[/tex]

[tex]Ways = 48[/tex]

Hence, there are 48 ways

The possible ways in which Ava, Cara, Emma, Lily, and Mia are to be seated together in a row, while Emma and Lily sit next to each other are 48 ways.

Given to us;

Number of girls = {Ava, Cara, Emma, Lily, and Mia} = 5 girls,

Also, Emma and Lily must sit next to each other, therefore, considering them as a single person,

The choices we are left with = {Ava, Cara, Mia, (Emma, Lily)} = 4 person;

We know to calculate the number of ways people can sit is given by n! (n factorial), where n is the number of person. Thus,

different ways this 4 person can sit = n!

                                                           = 4!

                                                           = 4 x 3 x 2 x 1

                                                           = 24 ways

Further, as given in the question Emma and Lilly must sit together but they can change sits within themselves, So,

different ways Emma and Lilly can sit = n!

                                                              = 2!

                                                              = 2 x 1

                                                              = 2 ways

Therefore, the total number of ways all 5 girls can sit together in which Emma and Lilly will be always seated together,

Total ways all can sit together = 24 x 2

                                                  = 48 ways

Hence, the possible ways in which Ava, Cara, Emma, Lily, and Mia are to be seated together in a row, while Emma and Lily sit next to each other are 48 ways.

To know more visit:

https://brainly.com/question/13003667