Mathematics College

Mina opens a book 15 times and records whether the page number is
even or odd. How many trials did she conduct?

Answers

Answer 1

Answer:

She made 15 trials

Step-by-step explanation:

Well it said that she opened the book 15 times in total and records each time so the answer would be 15.

Answer 2

Mina conducted 15 trials in total.

What are trials? What is probability? In probability theory, an experiment or trial is any procedure that can be infinitely repeated and has a well-defined set of possible outcomes, known as the sample spaceThe formula to calculate the probability of occurrence of an event  [A] can be written as -  

       P(A) = n(A)/n(S)  

        where -

        n(A) = Number of outcomes favorable to event A.

        n(S) = Total number of outcomes.

We have Mina opens a book 15 times and records whether the page number is even or odd.

Since she opens the book 15 times, she conducted 15 trials in total.

Therefore, Mina conducted 15 trials in total.

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Related Questions

An SRS of 2,500 individuals was taken from a large city to estimate the percentage of city residents with a graduate degree. 555 people in the sample had a graduate degree. The percentage of individuals in the city with a graduate degree is estimated as 22.2%. The estimated standard error is closest to:_______a. 1%b. 10% c. 0.1%

Answers

Answer:

The option is  b

Step-by-step explanation:

From the question we are told that

    The sample size is  n =  2500

   The number with a graduate degree is  k =  555

    The sample  proportion is [tex]\^ p = 0.222[/tex]

Generally the standard error is mathematically represented as

           [tex]SE = \sqrt{\frac{\^ p (1- \^ p )}{n} }[/tex]

=>        [tex]SE = \sqrt{\frac{0.222 (1- 0.22 )}{2500 } }[/tex]

=>        [tex]SE = 0.010[/tex]

Converting to percentage

           [tex]SE = 0.010 * 100[/tex]

=>       [tex]SE =10\%[/tex]

How do the number line graphs of the solutions sets of -23 > X and X2-23 differ?
One graph uses an open circle, but the other graph uses a closed circle. Also, the rays use arrows that point in
opposite directions, but they have the same endpoint.
They use arrows that point in opposite directions, the rays have different endpoints, and both graphs use open
circles.
O One graph uses an open circle, but the other graph uses a closed circle. Also, the rays have different endpoints, but
they use arrows that point in the same direction.
They use arrows that point in opposite directions, the rays have different endpoints, and both graphs use closed
circles.

Answers

Answer:

the answer is A. One graph uses an open circle, but the other graph uses a closed circle. Also, the rays use arrows that point in opposite directions, but they have the same endpoint.

Answer:

A as in apple

Step-by-step explanation:

The sum of two numbers is 9. Their difference is 21​

Answers

Answer:

(15, -6)

Step-by-step explanation:

x + y = 9

x - y = 21

x = 9 - y

plug in x into second equation

9 - y - y = 21

9 - 2y = 21

-2y = 12

y = -6

plug in y.

x - (-6) = 21

x + 6 = 21

x = 15

check

15 + (-6) = 9

15 - (-6) = 21

Solve absolute value inequality 4>|x+1|+2

Answers

Answer:

-3 < x <1

Step-by-step explanation:

4 > | x + 1 | + 2

1. Isolate the absolute value;

Inverse operations;

4 > | x + 1 | + 2

-2               -2

2 > | x + 1 |

2. Remove the absolute value;

The absolute value of a value is the distance it is from zero. This means that when removing the absolute value, one has to account for two possibilities; when the value within the absolute value brackets is negative, and when it is positive. In the case of dealing with absolute value inequalities, one will have to set up an inequality with this in mind.

2 > | x + 1 |

-2 < x + 1 < 2

Inverse operations

-2 < x + 1 < 2

-1                -1

-3 < x < 1

Answer:

-3<x<1

Step-by-step explanation:

The average wage for an electrician in CA is $25.47/hour. That is 11% above the national average. What is the national average?

Answers

Answer:

$22.95

Step-by-step explanation:

What is the equation of the line in slope-intercept form?

Line on a coordinate plane. Line runs through points begin ordered pair negative 3 comma 0 end ordered pair and begin ordered pair 0 comma 4.

Enter your answer in the boxes.

y =
x +

Answers

Answer: x= 3     y=0

x= 0        y=4

Step-by-step explanation: Because the x value is the first number like (3,0) in this 3 is the first number. Y is the second. HOPE IT HELPS!

Answer:

y= 4/3x+4

Step-by-step explanation:

hit me wit that brainliest

Calculate the actual sales since the sales and sales tax were rung up together. Assume sales tax of 6% and total sales of $33,000.

Answers

Answer:

the actual sales be $31,132

Step-by-step explanation:

The computation of the actual sales is as follows:

Let us suppose the actual sales be x

Now the sales tax be 0.06x

Now the total sales would be

x + 0.06x = $33,000

1.06x = $33,000

x = $33,000 ÷ 1.06

= $31,132

hence, the actual sales be $31,132

The same is to be considered by applying the above equation

Answer:

actual sales be $31,132

Step-by-step explanation:

Do you love math?
Do you like math?​

Answers

Answer:

frickk math

Step-by-step explanation:

i will never use it

On Monday, a restaurant served 54 diet sodas. This was 75% of the total number of sodas served that day. How many sodas did the restaurant serve on Monday?​

Answers

I would help you my guy but I do not understand math I’m sorry

Choose the scenario that describes a proportional relationship O Miguel earns $7.50 per hour while babysitting O A hotel charges a flat rate of $12.00 to park in their parking lot. O A cellphone plan is $25 plus $0.05 per megabyte, MB, of data usage. O Raphael sells paintings for $200 each at a market, but has to pay $100 to reserve a table


if u answer and its right I help u out kay?​

Answers

Answer:

A hotel charges a flat rate of 12.00 to a park walk in their parking lot.

Step-by-step explanation:

PLEASE HELP ASAP!!!
1-4
I WILL MARK BRAINLIEST!!!
It’s due in 4 minutes!

Answers

Answer/Step-by-step explanation:

Recall that the length of the midsegment of a triangle, is half the length of the third side.

Let's find the following given midsegments as follows:

1. IH = ½*ZX

IH = ½*18

IH = 9

2. PQ = ½*JL

PQ = ½*4

PQ = 2

3. CD = ½*GI

CD = ½*22

CD = 11

4. LK = ½*QS

LK = ½*18

LK = 9

Find the equation that can represent the situation if the sum of two numbers is 32. We also know that the greater number is 5 more than the smaller number. (5 points)

a
x + (x + 5) = 32

b
x − (x + 5) = 32

c
x(x + 5) = 32

d
x(x − 5) = 32

Answers

Answer:

A. x+(x+5)=32

Step-by-step explanation:

Janice left the mall with $13.42 she spent $42.89 on a pair of jeans $17.45 on a shirt and $28.93 on a purse how much money did Janice start with

Answers

Answer:

$89.27

Step-by-step explanation:

All you do is add all the money she spent.

I need help plzzzzzz

Answers

Answer:

3>-3 (a)

Step-by-step explanation:

3 is greater than -3

Answer:

The Answer is A

Step-by-step explanation:

Hope this helps

If a rectangular patio has a length that is 5 feet longer than its width and a perimeter of 54 feet, solve for the length.
1)17 feet
2)21 feet
3)16 feet
4)11 feet

Answers

Answer: (3)

Step-by-step explanation:

In this problem, we don't know the length or width. All we do know is that the length is 5 feet longer than the width, and that the perimeter is 54 feet. Both lengths plus both widths equals the perimeter. To solve this problem, you must give the width, the value of x.

Step 1: Draw a rectangle where the width is x and the length is x + 5.

Step 2: Find the sum of the lengths and the sum of the widths

2 times the length plus 2 times the width equals the perimeter

2(x + 5) + 2(x) = 54

Step 3: Solve for the width

2(x + 5) + 2(x) = 54

2x + 10 + 2x = 54 (Distributive Property)

4x + 10 = 54 (Group Like Terms)

4x = 44 (Subtraction Property of Equality)

4x/4 = 44/4

x = 11 (Division Property of Equality)

x = width = 11

Step 4: Solve for the length

x + 5 = length

11 + 5 = 16

Length = 16. So (3) must be the answer.

there is a $50 fee to rent out a bouncy house plus $20 per hour write an equation that represents the total amount paid

Answers

50x + 20 = y

i did it random sry

On a 1 mile track, Runner A has made 18 laps in the time it took Runner B to make 8 laps. If Runner A is running 5 mph faster than Runner B, how fast is each of them running?

Answers

Answer:

Runner A is running at 9 mph while runner B is running at 4 mph

Step-by-step explanation:

From online values, 4 laps make 1 mile.

We are told Runner A has made 18 laps in the time it took Runner B to make 8 laps.

This means that runner A has run in mile; 18/4 = 4.5 miles

While runner B has run in miles; 8/4 = 2 miles

Runner A is running 5 mph faster than Runner B, thus speed of runner A is;

V_b + 5 while speed of runner B is V_b.

We know that; time = distance/speed

Thus;

t_a = 4.5/(V_b + 5)

t_b = 2/V_b

Since the times are equal from the question, then;

4.5/(V_b + 5) = 2/V_b

Cross multiply to get;

4.5V_b = 2(V_b + 5)

4.5V_b = 2V_b + 10

4.5V_b - 2V_b = 10

2.5V_b = 10

V_b = 10/2.5

V_b = 4 mph

Since V_a = V_b + 5

Thus, V_a = 4 + 5 = 9 mph

Runner A is running at 9 mph while runner B is running at 4 mph

At Baceball practice, Asher caught 16 of 20 hits to the out field. Select all of the was of expressing 16 out of 20. a. 3/5 b. 0.8 c.80% d.0.08

Answers

Answer:

16 : 20 = 0,8 = 80%

Step-by-step explanation:

pls make me a brinist

i’ll give u brainliest What is the degree measure of x?

Answers

Answer:

134 is the ONLY correct answer

Step-by-step explanation:

This is because it is asking for X, not the interior angle that's missing. You do need that angle to find the correct answer.

All triangles are equal to 180 degrees.

180-88-46=46

And all supplementary angles are equal to 180 degrees.

Therefore, 180-46 (as that is the only known angle) makes it 134 degrees.

67, 88 are not correct as one of them isn't obtuse and the other isn't to scale, 111 isn't correct as the math backs up 134 which is also an obtuse angle

.

Ethan has saved $180 to buy a bicycle which costs $540. He wants to find out how much more he needs to save to buy bicycle. Which equation when solved would show Ethan the amount of money ne needs to save?

Answers

180 + x = 540
-180 = -180
X = 360

Which linear equation represents the graph? Help assp

Answers

Answer:

Step-by-step explanation:

I think its c

Okay so, I’ll try my best to explain.

If you were to write this in y=mx+b, we know that m is the slope and b is the y-intercept. The slope represents the change in y over change in x. And the y-intercept represents the point at which the line crosses the y-axis.

Using this information, you can see that the line crosse the y-axis at -6. And since the line is going down, we know that the slope is negative.

So, your answer should be D) y=-3x-6

Hope this helps!

School lunches cost $87.75 for 5.4 weeks. About how much would the lunches cost per week?

Answers

Answer:

16.25

Step-by-step explanation:

divide money by the weeks .

The cost per week would be $87.75 / 5.4 weeks
87.75/5.4 = 16.25

That means the cost of lunch per week is $16.25

A ladder 10 ft long rests against a vertical wall. If the bottom of the ladder slides away from the wall at a rate of 0.8 ft/s, how fast (in rad/s) is the angle (in radians) between the ladder and the ground changing when the bottom of the ladder is 6 ft from the wall?

Answers

Answer:

Step-by-step explanation:

480 because you multipy 4 times 8 and than you mulpyy 48 times 10 and that is how i got the number 480.

Answer:

480 because you multiply 4 times 8 and then you multiply 48 times 10 and that is how I got the number 480.

Solve the problem.
Kannanaski Rapids drops 70 ft vertically over a horizontal distance of 866 ft. What is
the slope of the rapids?
-0.001
-12.4
-70
-0.081
I need help ASAP :(

Answers

Answer:

0.081

Step-by-step explanation:

Given parameters:

Vertical drop  = 70ft

Horizontal distance  = 866ft

Unknown:

Slope of the rapids  =?

Solution:

Slope is the rise or vertical height divide by the horizonal distance.

  Slope  = [tex]\frac{vertical drop}{horizontal distance}[/tex]

  Insert the parameters and solve;

  Slope  = [tex]\frac{70}{866}[/tex]   = 0.081

Based on the information given the slope of the rapids is 0.081.

Slope of the rapids:

Using this formula

Slope of the rapids=Vertically rapid drop/Horizontal distance

Let plug in the formula

Slope of the rapids=70ft/866ft

Slope of the rapids=0.0808

Slope of the rapids=0.081 (Approximately)

Inconclusion the slope of the rapids is 0.081.

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Nikko needs to get his air-conditioner fixed. The repairman will charge Nikko a flat fee
of $50 plus an additional $20 for each hour he needs to work on it.
Write an equation to represent Nikko's total cost to repair his air-conditioner. Use t for total
cost and h for hours.

Answers

Answer:

$70

Step-by-step explanation:

50+20=70

The required expression is given for the Nikko is t = 50 + 20h.

Given that,
The repairman will charge Nikko a flat fee of $50 plus an additional $20 for each hour he needs to work on it.

What is the equation?

The equation is the relationship between variables and represented as y = ax + b is an example of a polynomial equation.

here,
t is the total cost the repairman charged to Nikko,
h is the number of hours,
repair men charges for h hours = $20h
repair men charge a flat fee of $50.
Total charge, t = 50 + 20h

Thus, the required expression given for the Nikko is t = 50 + 20h.

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1. Matilde collects blankets for an animal shelter. She fills 9 boxes. There are 10 blankets in each box. How many blankets does Matilde collect for the shelter? *
1 point
A. 9 + 9 = 18 blankets
B. 9 x 10 = 90 blankets
C. 10 + 9 = 19 blankets
D. 10 x 9 = 90 blanket

Answers

Answer:

B and D

Step-by-step explanation:

9x10=90

10x9=90

Which of these strategies would eliminate a variable in the system of equations?
( 10x + 4y = -2)
(5x-2y=2)
Choose all answers that apply:
Multiply the top equation by
then add the equations.
Multiply the bottom equation by 2. then subtract the bottom equation from the top equation.

Answers

finish the first answer.
and your case the third option would be the best choice to eliminate available in the system of equations because multiplying by two would cancel out

Find the perimeter. Simplify your answer completely.

Answers

Answer:119 4/7

Step-by-step explanation:

2/14+6/14+2/14+4/14+1/14+3/14+4/14= 22/14

10+35+10+12+24+15+12=118

118 22/14

119 8/14

119 4/7

Answer:

119 and 4/7

Step-by-step explanation:

10 + 12 + 15 + 24 + 12 + 10 + 35 = 118.

3/14 + 1/14 = 2/7

1/7 + 2/7 + 2/7 + 2/7 = 1

1/7 + 3/7 = 4/7

118 + 1 + 4/7 = 119 and 4/7


What is the width of a rectangle that has an area of 96 square inches and a length of 12 inches?

Answers

Answer:

width = 8

Step-by-step explanation:

to find the width of a rectangle you need to to the equation w= A ÷ l. when you put in the numbers you gets w = 96 ÷ 12.

96 ÷ 12 = 8 so w = 8

Answer:

The width is 8inches

Step-by-step explanation:

I used this question and it was right on my test.

which inequality is shown in the graph below?​

Answers

Answer:

Step-by-step explanation:

must be the equation

y > x+1

because the slope is 1 and is 1 abve the origin and a dotted line

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