A teacher designs a test so that 93% of students who study will pass and 9% of students who don't study will pass. 88%
of students study for a test. What is the probability that a randomly selected student passes?

A. 1.057
B. 0.833
C. 0.084
D. 0
E. 0.829

Answers

Answer 1

Answer:

Step-by-step explanation:

First find the percentage of the ones that pass that study

.93 *(88)=88.84%

next find the ones that pass that did not study

.09*(100-88)=1.08

sum these to get the total passing percentage

88.84+1.08=82.92%

The probability is 82.9 per 100 or .8292 for student

E is the answer

Answer 2
I THINK THE ANSWER IS ALSO E BC I DID THE TEST

Related Questions

emeril is building a cutting board for his home kitchen.He wants it to be similar in size to the cutting board at gis restaurant.His restaurant cutting board is 36 inches wide by 21 inches long .He has enough space on his home counter for a board that is 24 inches wide.How long will his home cutting board be?

Answers

Answer:

14 inches

Step-by-step explanation:

I say 14 inches because width for the board at the restaurant is 36 (3×12) and the length is (3×7) so if the width for the board at home is 24 ( 2×12) then the length must be 14 ( 2×7). See what I did?

His home cutting board will be 14 inches long.

Since Emeril is building a cutting board for his home kitchen, and he wants it to be similar in size to the cutting board at gis restaurant, which is 36 inches wide by 21 inches long, and he has enough space on his home counter for a board that is 24 inches wide, to determine how long will his home cutting board be the following cross multiplication calculation must be performed:

36 = 24 21 = X (21 x 24) / 36 = X 14 = X

Therefore, his home cutting board will be 14 inches long.

Learn more in https://brainly.com/question/24919859

3y - 8 = -3(4 - 2x)
Step 2 of 2: Find the equation of the line which passes through the point (- 12. -3) and is parallel to the given line Express
your answer in slope-intercept form. Simplify your answer.

Answers

Answer:

y=2x+21

Step-by-step explanation:

Look at attached pictures for further explanation

I need help plzzzzzzzzzz

Answers

Answer: The perimeter of the triangle is 33b - 8

Step-by-step explanation:

Simplify to create an equivalent expression.

2(−2−4p)+2(−2p−1)

Choose 1 answer:

(Choice A)
A
-12p-6

(Choice B)
B
-10p-6

(Choice C)
C
-12p+6

(Choice D)
D
12p-6​

Answers

Answer:

choice A

Step-by-step explanation:

-8p-4p - 4 - 2

= -12p-6

A person has 10 Rap songs, 12 R&B songs, 23 Alternative songs, 10 Pop songs, 17 Country songs, and 18 Hip Hop songs stored on an MP3 player (a total of 90 songs). If the person set the MP3 player to random shuffle, what are the probabilities of the first song being played being a Country song?

A) .4888
B) .3888
C) .2888
D) .1888

Answers

D
Step-by-step explanation:
The percentage of 17 out of 90 is 18.88. When you move the decimal point over two places to make it a percentage out of one you get 0.1888

Anna and josh are putting up lights for a party. For every 4 blue lights they put up 2 red lights. If they put up 120 lights. How many are blue?

Answers

Answer:

80 blue

Step-by-step explanation:

r=red

b=blue

4b+2r=6 lights in one light cluster

120/6=20 clusters

20 clusters of 4 blue lights =80

an anthill has a volume of 8792mm^3 of dirt. its radius is 20 mm. what is the height of the cone? explain how you found the height.​

Answers

Answer:

Height, h = 21 millimeters.

Step-by-step explanation:

Given the following data;

Volume = 8792mm³

Radius = 20 mm

To find the height;

We know that the shape of an anthill is conical in nature.

Mathematically, the volume of a cone is given by the formula;

[tex] V = \frac{1}{3} \pi r^{2}h[/tex]

Where;

V is the volume of the cone.r is the radius of the base of the cone.h is the height of the cone.

Substituting into the equation, we have;

[tex] 8792 = \frac{1}{3} * 3.142*20^{2}*h [/tex]

[tex] 8792 = \frac{1}{3} * 3.142*400*h [/tex]

[tex] 8792 = \frac{1}{3} * 1256.8*h [/tex]

[tex] 8792 = 418.93*h [/tex]

[tex] Height, h = \frac {8792}{418.93}[/tex]

Height, h = 20.99 ≈ 21 mm.

Therefore, the height of the cone is 21 millimeters.

Find the sale price of a $70 item after a 20% discount.

Answers

Answer:

$56

ez

Step-by-step explanation:

I think the answer could be 56

13. simplify and factor this expression; 12x+18y+18x D NEED HELP ASAP​

Answers

Answer:

30x+18y

Step-by-step explanation:

12x+18y+18x

combine like terms

30x+18y

Answer:

6 ( 5x + 3y ) did the calculations, just simplified

What are these negative fractions converted to positive ones (I suck at math so I need an explanation): -5/6, -7 3/8, -3/11

Answers

Answer:

multiply each by -1

-5/6 x -1 = 5/6

-7 3/8 x -1 = 7 3/8

-3/11 x -1 = 3/11

Step-by-step explanation:

y = 5x – 22
3x + 2y = 34

Answers

Answer:

y = 5x – 22

3x + 2y = 34

Step-by-step explanation:

Answer:

x = 6, y = 8

Step-by-step explanation:

[tex]y=5x-22\\3x+2y=34\\\\3x + 2(5x-22)=34\\3x + 10x - 44 = 34\\13x - 44 = 34\\13x = 78\\x = 6\\\\y = 5*6-22\\y = 30-22\\y = 8[/tex]

Shade 12 squares on the 4-by-10 grid.

What percent to is shaded?

Answers

On a 10 by 4 grid, there would be 40 squares. If you were to shade 12 of those squares, it can be shown as the fraction:

[tex]\frac{12}{40}[/tex]

12/40 = 0.3

to get a percentage, we would have to multiply by 100

30% is to be shaded

Answer: 30%

Step-by-step explanation:

Total number of squares: 4*10=40

Shaded squares: 12

Fraction of shaded squares: 12/40

If you make the denominator 100, then the numerator is the percentage:

[tex]\frac{12}{40} * \frac{2.5}{2.5}=\frac{30}{100}[/tex]

HELP PLEASE 20 POINTS
Describe what a solution is for a system of equations and explain how this relates to setting the equations equal to each other?​

Answers

Sorry, can you tell me in Spanish, I don't understand much English, I really want to help you, can you do what I told you? Thanks

19 cm
6 cm
30 cm
The container is 2/3 full of water.
A cup holds 275 ml of water.
What is the greatest number of cups that can be completely filled with water from
the container? (4)

Answers

Answer:

A total of  8 (eight) completely filled cups.

Step-by-step explanation:

Recall that 1 milliliter is the SAME as 1 cubic cm. Therefore, the 275 ml cup holds exactly 275 cm^3 of water.

Now calculate the volume of water in the container. Since the container measures 19 cm x 6 cm x 30 cm, its total volume is:

Volume = 19 x 6 x 30 = 3420 cm^3

The amount of water in it fills 2/3 of its volume, then:

amount of water = 2/3 (3420) = 2280 cm^3

Now to find how many cups can be filled with such amount of water, we do the division:

2280 / 275 = 8.29

Then the maximum number of completely filled cups is: 8

15 POINTS! GIVE REAL ANSWERS PLEASE. HELP WOULD BE MUCH APPRECIATED THANKS!
Which algebraic expression does this model represent?

*IMAGE LINKED*

4x+16

4(x+3)

x+34

-4(x+3)​

Answers

Answer:

It would be 4(X + 3)

Step-by-step explanation:

There are 4 Xs and 12 ones, so the equation is 4X + 12 or 4(X + 3).

Select the graph that best represents the given table of values.

x f(x)
6 4
2 8
10 0

witch graph is right
1 2 3 or 4

Answers

Answer:

The first image,

Step-by-step explanation: Hope this helps!

5. Round 16.975 to the nearest hundredths
A 16.10
B. 16.98 C. 16.20 D. 16.97
6. Encircle the letter of the number that rounds off to 10.85
A 10.859
B. 10.857 C. 10.851 D. 10.856
7. Which of the following order numbers from greatest to least?
a 3.756
37.56
375.6 0.3756
b. 0.2468
0.2486 0.2648 0.2846
C. 11.010
11.011 11.0110 1.1101
d. 2.86
2.75
2.68
2.56​

Answers

Answer:

5. B

6. C

7. D

Step-by-step explanation:

hope this is correct and helps hehe

Subtract. 28.5−2.7 help

Answers

Answer:

25.8

Step-by-step explanation:

A bag of garden soil weighs 38 pounds and holds 4 cubic feet. Find the weight of 15 bags in kilograms and the volume of 15 bags in cubic yards.

Answers

Answer:

The weight of 15 bags is 258.21 kilograms.

The volume of 15 bags is 2.222 cubic yards.

Step-by-step explanation:

Dimensionally speaking, a pound equals 0.453 kilograms and a cubic yard equals 27 cubic feet. We proceed to calculate the weight and the volume of 15 bags by following conversions:

Weight

[tex]x = 15\,bags \times \frac{38\,lb}{1\,bag}\times \frac{0.453\,kg}{1\,lb}[/tex]

[tex]x = 258.21\,kg[/tex]

The weight of 15 bags is 258.21 kilograms.

Volume

[tex]x = 15\,bags \times \frac{4\,ft^{3}}{1\,bag} \times \frac{1\,yd^{3}}{27\,ft^{3}}[/tex]

[tex]x = 2.222\,yd^{3}[/tex]

The volume of 15 bags is 2.222 cubic yards.

3. Find the surface area of the cylinder. (1 point)
2009.6 in
401.9 in
803.8 in
602.9 in

Answers

Answer:

Option (3)

Step-by-step explanation:

Surface area of a cylinder is given by the formula,

Surface area = 2πr(r + h)

Here, r = radius of the circular surfaces

h = Height of the cylinder

From the figure attached,

r = 8 in.

h = 8 in.

Therefore, Surface area of the cylinder = 2π(8)(8 + 8)

                                                                 = 256π

                                                                 = 803.8 in² [If π = 3.14]

Option (3) will be the correct option.

please show work and solve (3x^2) (-2x^4)

Answers

Answer:

[tex]-6x^6[/tex]

Step-by-step explanation:

We have the expression (3x^2)(-2x^4) and are being asked to solve.

(3x^2)(-2x^4)

When we have this type of question with exponents, it may seem easier to try and solve/simplify the exponents, but here's an easier way, add the exponents and multiply the constant numbers.

Therefore :

2 + 4 are the exponents

^6

and 3 * -2 are the constant numbers

-6

-6x^6

[tex]-6x^6[/tex]

y + 51 = 99, what is y?

Answers

Answer:

y + 51=99

replace the y with 99

then it becomes 99 - 51

y=48

two sixth times five

Answers

Answer:

1 4/6

Step-by-step explanation:Put 5 into a fraction (5/1) then time 5/1 times 2/6 and get 10/6 then covert it into a mixed number 1 4/6

determine the amount of an investment if $500 is invested at an interest rate of 4.25% compounded quarterly for 12 years

Answers

$830.41 is the answer xxxx

A line is represented by the equation y = 3x – 7. Which statement about the line is TRUE?

A.
This line is parallel to the line whose equation is y = 2x – 7.

B.
The line has a positive slope.

C.
The y-intercept is 7.

D.
The point (1, 4) lies on the line.

Answers

Step-by-step explanation:

alignment in represented by erosion by which a statement both lights it's true that this line is a parallel that two parallel whose the equation is do you audio will be that a googlmy answer if two line was station then represented by equation allowed is a representation equation the by represented is a

Simplify: 7^6 divided 7^2

Answers

Answer:

The answer is 1/3

Step-by-step explanation:

Reduce the expression, if possible, by cancelling the common factors.

~Hoped this helped~

The answer to your question is “1/3”. Continue learning hope u have a amazing day/night :)

Si un jarrón tíene 80 cm de altura ¿ cuantos milímetros mida​

Answers

Si tiene 80 cm de altura mier 800 milímetros de altura

which expression represents the product of 83 and x


83+x
83÷x
83x
83-x​

Answers

The answer is 83x hope this helps

operación 1: (6+(4*12)/12-2)+5​

Answers

Answer:

13

Step-by-step explanation:

6+ (4)(12) /12 −2+5

=6+ 48 /12 −2+5

=6+4−2+5

=10−2+5

=8+5

=13

You are applying for an 80/20 mortgage to buy a house costing $100,000.
The first (80%) mortgage has an interest rate of 4.75%, and the second (20%)
mortgage has an interest rate of 7.525%. Both the first mortgage and the
second mortgage are 30-year fixed-rate mortgages. What will the total
amount of the mortgage be?

Answers

Answer:

$200,703.60

Step-by-step explanation:

this is the is the answer, i used a tvm solver

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