Mathematics College

The lengths of a professor's classes has a continuous uniform distribution between 50.0 min and 52.0 min. If one such class is randomly selected, find the probability that the class length is between 50.4 and 51.4 min.

P(50.4 < X < 51.4) =

Answers

Answer 1

Answer:

=0.70

Step-by-step explanation:

p(x < 51.4) = (51.4-50.0)/(52.0-50.0)

p(x < 51.4) =1.4/2

=0.70

Related Questions

Which of the following is true?

a. The p-value for a one-tailed test would be the same as the current p-value.
b. The p-value for a one-tailed test would be half the current p-value.
c. If this test was one-tailed instead of two-tailed g, you would reject the null.
d. If this test was one-tailed instead of two-tailed, you would still fail to reject the null.
d. The p-value for a one-tailed test would be double the current p-value.

Answers

Answer:

The correct option is c which is if this test was one-tailed instead of two-tailed, you would reject the null.

Step-by-step explanation:

a: This statement cannot be true as the p-value for a 1 tailed test is dependent on the level of significance and other features.

b: This statement cannot be true as there is no valid mathematical correlation between the p-value of the one-tailed test and the current p-value.

c: This statement is true because due to the enhanced level of significance, the null hypothesis will not be rejected.

d: This statement is inverse of statement c which cannot be true.

e: The statement cannot be true as there is no correlation between the current p-value and the p-value of 1 tailed test. The correlation exists between the values of one-tailed and two-tailed p-values.

Jamie ran 9.3 miles in 1.5 hours. How far did she run in miles per hour?

Answers

6.2 mph. i set up a proportion. it is right

What is the perimeter of the figure on the coordinate plane below.

Answers

Answer:

C) 22 units

Step-by-step explanation:

2x(9-1)=16

2x(5-2)=6

16+6=22

Answer: maybe 0 if i sound unreasonable then I'm really sorry I'm only in 4th grade.

Step-by-step explanation: -10 + 10 + -10 + 10

Mia's birthday party will cost $12 if she invites 4 guests. What is the maximum number of guests there can be if Mia can afford to spend a total of $15 on her birthday party?

Answers

You find how much each person costs so 12/4 = 3. So every person costs 3 dollars. Then you divide 15/3 and you get 5 so she can invite a max of 5 people

On tax free weekend, Alyssa bought 4 pairs of blue jeans for $109.28. The cost of the jeans is proportional to the number of pairs of jeans bought. What is the constant of proportionality in terms of dollars per pair of jeans?

Answers

Answer:

27.32

Step-by-step explanation:

109.28 ÷ 4 = 27.32

HELP
Mrs. Tate's car has 11.25 gallons of gas in the tank and uses 0.05 gallons per mile. If Mrs. Tate uses 2.75 gallons driving home from visiting family, which of the following best describes all possible numbers of miles (m) she can drive after returning home before running out of gas?

A.
m > 170
B.
m < 170
C.
m < 280
D.
m > 280

Answers

Answer:

B

Step-by-step explanation:

11.25-2.75 = 8.5

8.5/.05 = 170

Answer:

Step-by-step explanation:

170

6x + y = -1
-6x - 4y = 4
solve for x and solve for y

Answers

9514 1404 393

Answer:

  (x, y) = (0, -1)

Step-by-step explanation:

The coefficients of x are opposites, so we can eliminate x by adding the two equations.

  (6x +y) +(-6x -4y) = (-1) +(4)

  -3y = 3 . . . . simplify

  y = -1 . . . . . . divide by -3

Now, we need to find x.

  6x -1 = -1 . . . substitute for y in the first equation

  6x = 0 . . . . . add 1

  x = 0 . . . . . . divide by 6

The solution is (x, y) = (0, -1).

Find the product ........

Answers

The answer is 3/4 l did on iready and l got it right

I would just like to say...
PEOPLE, STOP ATTACHING LINKS!!!!!!!!!

Answers

Thank YOU!!! I was wondering what those links are for but I'm not taking a chance with that

Answer:

Yeah i was really stuck on a problem then 2 users answered and gave links.

Like bro i said no links!!!! :/

If a • b = b, what must the value of a be?

Answers

Answer:

the value of a would be one, i think

!NO LINKS, NO FILES!

please :)

Answers

area is base x height
12 x 6 = 72
the area is 72 in^2

Answer:

the area is 72

Step-by-step explanation:

1.
A rock is thrown upward with a velocity of 12 meters per second from the top of a 28
meter high cliff, and it misses the cliff on the way back down. When will the rock be 5
meters from ground level? Round your answer to two decimal places.
Gravity Formula


PLS HELP

Answers

Answer:

The rock will be be 5  meters from ground level at time = 3.713 seconds

Step-by-step explanation:

As we know-

[tex]s(t) = -4.9 * t^2 + v_0t + s_0[/tex]

V0 = velocity

S0 = height above ground when thrown

Substituting the given values, we get -  

[tex]9 = -4.9* t^2 + 12 * t +32\\-4.9*t^2 +12*t + 23 = 0[/tex]

As per the formula

[tex]t = \frac{-12+ \sqrt{12^2 -4*(-4.9)*23} }{(2*(-4.9)} \\t = 3.713[/tex]

The rock will be be 5  meters from ground level at time = 3.713 seconds

The sum of the measures of three
angles is 90°
The measure of angle M is 2x
The measure of angle N is 3x + 8
• The measure of angle Q is 7x - 2
What is the value of x?
A. 7 B. 8
C. 9
D. 6

Answers

Answer:

A

Step-by-step explanation:

Equation

2x + 3x + 8 + 7x - 2 = 90        

Solution

Combine like terms on the left

12x + 6 = 90                    Subtract 6 on both sides

12x = 90 - 6

12x = 84                         Divide by 12

x = 84/12

x = 7

In the past year and a half, Gnarly the dog lost an average of 2/9 pound each month. Today, Gnarly weighs 14 pounds. How much did Gnarly weigh a year and a half ago?

Answers

Answer:

Weight before 18 month = 18 pound

Step-by-step explanation:

Given:

Current weight of dog = 14 pound

Weight lose each month = 2/9 pound

Total number of month = [tex]1\frac{1}{2}[/tex] year = 18 month

Find:

Weight before 18 month

Computation:

Total weight lose = Weight lose each month x Total number of month

Total weight lose = 2/9 x 18

Total weight lose = 4 pound

Weight before 18 month = Current weight of dog + Total weight lose

Weight before 18 month = 14 + 4

Weight before 18 month = 18 pound

Please help me i am not downloading anything

Answers

Answer:

on what

Step-by-step explanation:

X
A regular heptagon has a side of approximately 4.3 ft and an apothem of approximately 4.5 ft.
Find the area of the heptagon.
X
1+1
2.
X
4.5 ft
4.3

Answers

Answer: 67.725feet²

Step-by-step explanation:

A heptagon consist of 7 sides and Its area is calculated using the formula

= 1/2 × nsr

n = number of sides = 7

s = side length = 4.3

r = apothem = 4.5

Area = 1/2 × nsr

= 1/2 × 7 × 4.3 × 4.5

= 0.5 × 7 × 4.3 × 4.5

= 67.725feet²

The sum of 2 numbers s 1 and the diffreance is 5 what are th 2 numbers

Answers

Answer:

note ;sum of two no. is not 1.

let no. be x and y.

we have

x+y=11.......(1)

x-y=5........(2)

adding equation 1&2

x+y+x-y=11+5

2x=16

x=16/2=8

again

8-y=5

y=8-5=3

:.

x=8,y=3

3 customers entered a store over the course of 6 mintues. At what rate were the customers entering the store in customers per minute​

Answers

3 customer = 6 minutes

/6

1/2 customer = 1 minute

The rate were the customers entering the store in customers per minute​ is 1/2 customer per minute.

What is the area of a triangle with a base of 10 cm and a height of 4 cm?

Answers

Answer:

20 cm

Step-by-step explanation:

have a nice day!! :)

Answer:

Su area es 20  

Step-by-step explanation:

bxa/2=10x4/2=20

De nada

PLZ RESPOND AS SOON AS POSSIBLE
What point is located at (-2, -6)
a. F
b. G
c. H
d. K

Answers

"Point K" is the correct answer!-2 means 2 left-6 means 6 down

The answer is for your question is letter k

1,1,1,2,2,2,2,3,4,4,5,7,8,12,14 what's the median mode and the and range for these numbers

Answers

Answer:

median: 3

mode: 2 (appeared 4 times)

range: 13

Step-by-step explanation:

What is the length of the diagonal?
18 cm
9 cm

Answers

It’s 27 but I’m not 100% sure because I’m need more content

Mai poured 2.6 liters of water into a partially Field pitcher. The pitcher then contained 10.4 liters what is the solution of the equation mean in the situation

Answers

x=10.4-2.6 x is the initial volume, I think thats what you are asking for but you aren't very clear

an oil company uses cylindrical storage tanks. each tank has a radius of 14ft and is 27ft fall. what is the volume of the tank?

Answers

Answer:

378

Step-by-step explanation:

Help me gurlz!!!!!!!!!!!!!!!

Answers

Step-by-step explanation:

A and 3

B and 1

C and 4

D and 2

I hope this helps :)

What is bigger 1/9 or -4

Answers

Answer:

1/9

Step-by-step explanation:

1/9 since it is positive

Answer:

Its 1/9.

Step-by-step explanation:

1/9 is indeed a fraction, and -4 is a negative number.

HELP HOW DO I GET MORE THAN ONE PICTURE WHEN I ASK A QUESTION ‍♀️‍♀️

Answers

Answer:

Press browse files after the 1st one

Step-by-step explanation:

That just look at circle

Which inequality represents the situation: Kate took $3 out of her purse and still had at least $8 in it. How much did she have to begin with?

Answers

Answer:

k-3 ≥8

Step-by-step explanation:

k-3 ≥8

kate takes out 3 dollars and has at least 8 dollars left, meaning she could have more.

Using the Box plot you drew for the following data set, describe how the data is dispersed: 22, 35, 18, 30, 37, 20, 40, 18, 38, 38, 19, 27, 31, 34 no

Answers

56 because that’s the answer

Which expressions are equivalent to 3 1/4 - (- 5/8)?

Answers

Answer:

3.875

Step-by-step explanation:

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