A​ true/false test has 30 questions. A passing grade is ​78% or more correct answers.
a. What is the probability that a person will guess correctly on one​ true/false question?

Answers

Answer 1

Answer:

50%

Step-by-step explanation:

one question has 2 possible answers and 1/2 is 50%


Related Questions

WILL GIVE BRAINLEST!!!

Answers

Answer:

18 12

6 22

Step-by-step explanation:

if u understand my handwriting lol

24 to the second power divided by 47

Answers

12,26 (rounded off to 2 decimals)

Answer:

[tex]\frac{576}{47}[/tex]

Step-by-step explanation:

[tex]24^{2} = 576[/tex], since 47 is a prime number and 576 isn't divisible by it, [tex]\frac{576}{47}[/tex] would be the best answer.

How would you describe the tick marks on the number line between the tenths?

Answers

Answer:

millimeters....

what does a value of 8 in 589310 compare yo the value of the 8 ine 598301​

Answers

Answer:

10

Step-by-step explanation:

It is 10 times as much

Jacey has 40 pizzas to sell in the concession
stand at a basketball game. Each pizza has
been cut into 8 slices of equivalent size. In the
first hour, Jacey sold 16% pizzas. In the second
hour, she sold 18 pizzas. How many pizzas
does Jacey have left to sell?

Answers

ANSWER: In theory the answer is (16.6)Pizzas

Step by Step EXPLANATION : 16% of 40 is 6.4 that means she sold 6 full pizzas and 0.4 parts of one pizza
add that to 18 is 24.4 pizzas sold and 16.6 to go.

I need help if right I will mark you

Answers

Answer:

B

Step-by-step explanation:

2. A CD is marked with a sale sticker saying it is 56% off. The original price is $10.17. What is the sale price?​

Answers

Answer:

4.4748

Step-by-step explanation:

$10.17- 56% = $4.4748

just round it of to 2 decimals

Find the product. Simplify.
(x + 7)(x + 4) =

Answers

Answer:

Hi! The answer to your question is [tex]x^{2}[/tex]+11x+28

Step-by-step explanation:Answer:

☆*: .。..。.:*☆☆*: .。..。.:*☆☆*: .。..。.:*☆☆*: .。..。.:*☆

☆Brainliest is greatly appreciated!☆

Hope this helps!!

Stay Safe!!

- Brooklynn Deka

USE THEE DISTRIBUTIVE PROPERTY 3(m+6)+7(m-2)

Answers

Answer:

[tex]10m + 4[/tex]

Step-by-step explanation:

Distribute.

3(+6) + 7(−2)

3 + 18 + 7(−2)

Distribute again.

3 + 18 + 7(−2)

3 + 18 + 7−14

Subtract the numbers.

3 + 18 + 7−14

3 + 4 + 7

Combine like terms.

3 + 4 + 7

10 + 4

Find the x-intercept of y = -x - 20

Answers

Answer:

(-20, 0)

Step-by-step explanation:

to find x intercept we have to substitute 0 into y and solve for x

0 = -x - 20

rewriting the equation

-x - 20= 0

-x = 20

what is the equation of the following graph in vertex form

Answers

Answer:

y=(x-4)²-4

Step-by-step explanation:

Our x-intercepts are (2,0) and (6,0) so we can state them as expressions and expand:

(x-2)(x-6)=0 [Remember that (2,0) is the solution to x-2=0 just as (6,0) is the solution to x-6=0]

x²-8x+12=0 (Standard Form)

x²-8x+12+4=0+4 (Completing the square)

x²-8x+16=4

(x-4)²=4

(x-4)²-4=0

Therefore, our equation for the graph in vertex form is y=(x-4)²-4

A new shopping mall is considering setting up an information desk manned by one employee. Based upon information obtained from similar information desks, it is believed that people will arrive at the desk at a rate of 20 per hour. It takes an average of 2 minutes to answer a question. It is assumed that the arrivals follow a Poisson distribution and answer times are exponentially distributed. Assume that the information desk employee in Problem 1 earns $10 per hour. The cost of waiting time, in terms of customer unhappiness with the mall, is $12 per hour of time spent waiting in line. Find the total expected costs over an 8-hour day

Answers

Answer:

tsc = 8*1*10 = $80

twc = 8*20*0.0667*12 = $128.06

tc = 80 + 128.06 = $208.06

Step-by-step explanation:

To find the total expected costs for an 8 hour period, first you must find the total service costs (tsc) and the total waiting costs (twc) as the two costs are what make up the total cost (tc).

Total service cost = (the number of channels)(cost per channel)

tsc = m*Cs

There is only 1 employee so the number of channels is 1.

The cost for this channel is $10 per hour, so 10 * 8 hours in the day.

Total waiting cost = (total time spent waiting by all arrivals)(cost of waiting)

twc = (number of arrivals)(average wait per arrival) Cw

The number arrivals is at the rate of 20 per hour.

The average wait per arrival was found as Wq previously.

                 Wq = 20/(30*(30-20)) = 0.0667 hours

The cost of waiting (Cw) is the $12 per hour multiplied by the 8 hour day.

Total Expected Cost for an 8 hour day is the sum of the total service cost plus the total waiting cost.

The value of X (click photo)

Answers

Answer:

20°

Step-by-step explanation:

;b

Answer:

x=40

Step-by-step explanation:

The measure of the angle <RTS is half the difference of the measures of the intercepted arcs (mRS and mQP).

<RTS=(1/2)(mQP-mRS)

(x/2)=(1/2)((x+70)-(x+30))

x=x+70-x-30

x=40

Ella wants to estimate the product (3.6)(7.8). Which expression shows each factor rounded to the nearest whole number?
(3)(7)
(4)(8)
(3)(8)
(4)(7)

Answers

The answer is the second one. 3.6 would round up to 4 and 7.8 would round up to 8. Giving you (4)(8).

Answer:The second option is correct.(4).(8) 3.6 would be rounded to 4, and 7.8 would br8

Step-by-step explanation:

How do you know if a number is rational irrational or not real number

Answers

Answer:

A rational number can expressed as a whole number, integer, square root, fraction, and more as long as it's not imaginary. However, the number has to be clean like 1/2=0.5, 1/3=0.333, -1, 200. If it is a number that goes on forever and is not repeated like 1.22222, then it's an irrational number like pie-3.14159..., 5/0, 2.201845. If you have an imaginary number- 6i, then this would be considered as non real numbers like x+2, red, wind, and y/7.

Step-by-step explanation:

I hope this helped you!

Which shape has the least lines of symmetry?

Answers

Answer:

A

Step-by-step explanation:

B, C, D are all symmetrical

Answer:

a

Step-by-step explanation:

since B, C, D are all symmetrical it should be a

Solve the following inequality for n

Answers

Answer:

The answer is n < 6.

Step-by-step explanation:

[tex] \frac{n}{3} < 6 - 4[/tex]

[tex] \frac{n}{3} < 2[/tex]

[tex]n < 2 \times 3[/tex]

[tex]n < 6[/tex]

Therefor, the answer is n < 6.

Joseph is planning to meet up with his friend Naomi. Joseph jogs from his house traveling at a rate of 4
miles per hour. Naomi is initially 27 miles from Joseph's house and travels towards Joseph at 5 miles per
hour.
a) Show your solution graphically.
b) How many hours went by before they met?
hours
c) How many miles were they from Joseph's house when they met?
miles
30
25
Joseph

Answers

Answer:

It took 3 hours for the two to meet, and they were 12 miles from Joseph's home when they met.

Step-by-step explanation:

Since Joseph is planning to meet up with his friend Naomi, and Joseph jogs from his house traveling at a rate of 4 miles per hour, while Naomi is initially 27 miles from Joseph's house and travels towards Joseph at 5 miles per hour, for To determine how many hours went by before they met and how many miles were they from Joseph's house when they met, the following calculations should be performed:

27 - (4 + 5) = 27 - 9 = 18

27 - (4 + 5) x 3 = 0

Therefore, it took 3 hours for the two to meet.

4 x 3 = 12

Thus, they were 12 miles from Joseph's home when they met.

PLEASE HELP! CHOOSE ONE OF THE ANSWER CHOICES AND SHOW YOUR WORK. Don’t put a link as the answer.

Answers

Answer:B 4

Step-by-step explanation:

its asking which given expression is equivalent to 48 IF you do the correct math you should end up with 4 hope i helped

How many feet tall is the ladder? Picture is in the jpg. Ples help :(

Answers

Answer:

25

Step-by-step explanation:

you use pythagorean theorem

do 24^2 + 7^2 and that gets you 625.

next square root the number to get 25

Answer:

17

Step-by-step explanation:

a stick is 25 feet long and is cut into 2 parts. The longer part id one foot more than twice the shorter part. How long is each part?

Answers

Answer:

8 feet and 17 feet

Step-by-step explanation:

We can make out two equations.

Assume L stands for big length and W stands for small length.

The two equations are:

2w+1=L

L+W=25

We figure L=17 and W=8 which is the answer.

By the way, can you follow me on Brainly?

Thanks!

Solve the system of equations 2x - y = 13 and - 3x + 2y = - 18 by combining the equations .

Answers

Answer:

2X-Y = 13

-3X+2Y = -18

(2X-3X-Y+2Y) = 13-18

-X +Y= -5

Winy bought 9 light bulbs at a cost of 1.19 cents each. how much did winy spent in all of the light bulbs

Answers

Answer:

$10.71

Step-by-step explanation:

$1.19 * 9 = $10.71

A line goes through the points (-3,-6) and (6,9). Find the slope

Answers

Answer:

Slope = 5/3

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

m =  5/3

Answer:

5/3

Step-by-step explanation:

Hello, to find the slope from two given points, you use this formula- y2-y1/x2-x1. In this problem, 9 would be y2, -6 would be y1, 6 would be x2, and -3 would be x1. The equation should look like this:

9-(-6)/6-(-3)

Since both are negatives, you would add it like this:

9+6/6+3= 15/9

Now, you need to simplify this fraction which is 5/3.

PLSSSS HELP AND NOOOO LINKS OR SPAMMERS!!!! Write the equation of the line for the graph shown below.

Answers

B.None of these answers are correct(Please tell me if you got it right or wrong and I’m so very sorry if you didn’t)

Which of the following sentences is true?
•82.349 is less than 82.347.
•5.324 is less than 5.314.
•20.544 is greater than 20.844.
•19.532 is greater than 19.522.

Answers

Answer:

The last one

19.532 is greater than 19.522

Step-by-step explanation:

is 63 even or odd
is 30 even or odd
is 434 even or odd
is 898 even or odd
is 96 even or odd

Answers

c'mon bro you can't be this helpless

odd, even, even, even, even

Answer:

63 is odd

30 is even

434 is even

898 is even

96 is even

Step-by-step explanation:

Any numbers that end in 0, 2, 4, 6, 8 are even.

Any numbers that end in 1, 3, 5, 7, 9 are odd.

What is the volume of this rectangular prism? 1/2cm 4cm 3/2cm
i will mark brainliest thank u​

Answers

Answer:

3

Step-by-step explanation:

i changed 1/2 into 0.5 and 3/2 into 1.5 then 0.5 times 4 times 1.5 and got 3

pls mark me branilest

11. Find the sum

2 1/2 + 1 3/4=

Answers

Answer:

It should be 4.25.

Need help guys givin brainliest
fyi its tall not fall

Answers

Answer:

5 feet tall.

Step-by-step explanation:

So, it gives us the ratio of the Statue of Liberty

1 inch wide for each 61 feet tall.

Then it gives us the tallness of the actual thing:

305 feet tall.

To find out how wide it is, we should be able to divide 305 by 61.

305/61 is 5.

Other Questions
Marget works at a bakery. She is paid 300 every week Set three resistances to 2, 3, and 5 Ohms in series, and determine the current in the circuit with an ammeter. Take the snapshot of the screen showing the circuits and the reading of the ammeter. Then, replace these three resistors with just one resistance of 10 Ohm. Determine the current running in the circuit. Take a snapshot showing the circuits and the reading of the ammeter. Is the current the same as in the previous experiment with the three resistors Answer pleaseeeeeeeeeeeeeee pretty please What is the mean absolute deviation?92, 83, 88, 94, 91, 85, 89, 90 Rafael's salary last year was $49,500 and he took home$38,610. What was his federal income tax withholdingrate? 1. Name the side lengths of a 30 degree triangle. Hint adjacent, opposite, and hypotenuse. Question 4What is the distance between the points (-6, 7) and(-1, 1)? Round to the nearest whole unit.A.about 61 unitsB.about 8 unitsC.about 13 unitsD.about 7 units Please help me its due at 11 help me please !!!!! no fakes or get reported! A) 121 B) 102C) 141 D) 115 Daydreaming vs dreaming at night: which is betterand whyy film students. what's your top 3 fave movies? Pre calculus question need help asap Click through the graphs and select the one that could represent the relationship between the cost, c, of a call and the time, t, for the cell phone plan shown below. Pamela drove her car 999999 kilometers and used 999 liters of fuel. She wants to know how many kilometers (k) right parenthesis she can drive with 121212 liters of fuel. She assumes the relationship between kilometers and fuel is proportional.How many kilometers can Pamela drive with 121212 liters of fuel? How does a pollutant affect the environment DUE SOON PLEASE HELP A school ordered 32 orange shirts, 29 blue shirts, and 34 green shirts. The shirts are being divided equally among 6 classrooms. If each classroom gets the same number of shirts, how many shirts will be left over? A. 2 B. 4 C. 5 D. 3 Please help and I give you Brainliest A watt isA. 1 cal/s.B. 1 joule/s.C. 1 s/cal.D. 1 s/joule.