Mathematics High School

If students get their assignments done on time there is an 80% chance of earning a good grade in the class. If the assignments are finished during class or late then there is only a 30% chance of earning a good grade in the class. If the assignments are not done at all then there is only a 5% chance of earning a good grade in the class. In a certain class, 50% of the students have the assignments completed on time, 40% finish during class, and 10% do not do their assignments. If a student from this class is selected at random, what is the probability that student has a good grade?

Answers

Answer 1

Answer:

Probability that student has a good grade = 0.525

Step-by-step explanation:

Given

Chances of earning a good grade when assignments are done on time = 0.80

Chances of earning a good grade when assignments are finished during class or late = 0.30

Chances of earning a good grade when assignments are not done at all = 0.05

% of students who completed assignment on time = 0.50

% of students who completed assignment during class = 0.40

% of students who did not completed assignment at all = 0.10

Probability that student has a good grade

= (0.80 *0.50) + (0.30*0.40) + (0.05*0.10)

= 0.525

Related Questions

1.Which function value is greater: A(4) or B(4)??

Answers

Step-by-step explanation:

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Answer:

Step-by-step explanation:

15. Which set of numbers forms a Pythagorean triple?
20, 25, 50
O 15, 17, 21
O 11, 60, 61
O 5, 10, 15

Answers

Answer:

11, 60.61

Step-by-step explanation:

this is the only set that fits a^2 +b^2=c^2

you square the first two numbers, add them together. Then you take the square root of that sum. This number must equal the third number for it to be a triple.

how can you apply the basic concept of probability in your life as a student

Answers

Answer:

Easy you can guess if you think you can do something and you proudly can

Step-by-step explanation:

Write a system of equations to describe the situation below, solve using any method, and fill in the blanks. Clayton gets paid at home for doing extra chores. Last week, he did 4 loads of laundry and 5 loads of dishes, and his parents paid him $14. The week before, he finished 4 loads of laundry and 10 loads of dishes, earning a total of $24. How much does Clayton earn for completing each type of chore? Clayton earns $ per load of laundry and $ per load of dishes.

Answers

Answer:

$1.00 per load of laundry, $2.00 per load of dishes

Step-by-step explanation:

4($1.00) = $4

5($2.00) = $10

This equals $14, when he does 10 loads of dishes the number changes to $20 and by adding $20 to $4, that equals $24.

The answer is $1.00 per a load of laundry, $2.00 per load of dishes

What is an expression?

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

Last week, he did 4 loads of laundry and 5 loads of dishes, and his parents paid him $14. The week before, he finished 4 loads of laundry and 10 loads of dishes, earning a total of $24.

Clayton's earnings will be calculated as,

4($1.00) = $4

5($2.00) = $10

This equals $14, when he does 10 loads of dishes the number changes to $20, and by adding $20 to $4, that equals $24.

To know more about an expression follow

https://brainly.com/question/723406

#SPJ2

Charmaine pays $848 for landscaping rocks for a project. The cost per pound is 32 cents. How many pounds did she purchase? 0.265 2.65 26.50 2,650

Answers

Answer:

2,650 pounds

Step-by-step explanation:

Given data

Amount paid= $848

Rate = 32 cents= $0.32

Hence the amount she purchased is

Quantity= Amount* Rate

Quantity = 848/0.32

Quantity= 2650

Answer:

D.)

Step-by-step explanation:

is 2 8/9 equivalent to 3 1/6?

Answers

Answer:

Step-by-step explanation:

Answer:

The answer is No.

Step-by-step explanation:

have a great day

apples cost $2.19 per pound, what equation best presents y, the total cost of x pounds of apples?

Answers

boop beep boop beep boop beep boop.

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Answers

Answer: area= 130.88 m^2
perimeter= 42.08 m

I hope that helps, and I apologize in advance if it’s not right.

6% of $22 equals $1.32 what is the total including tax?

Answers

Answer:

$23.32

Step-by-step explanation:

Add $22 and $1.32 to get the total.

$22 + $1.32 = $23.32

An ice skater covered 825 meters in 55 seconds. Find his unit rate in meters per second.

Answers

Answer:

825/55=15 meters per seconds

Step-by-step explanation:

Hope this helps please give brainliest!

What is the probability of flipping a coin 50 times and getting tails 22 times or fewer

Answers

The probability of flipping a coins is
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the probability would be 11/25

The figure is made up of 5 identical quarter circles.
(a) Find the perimeter of the figure.
(b) Find the area of the figure.
(Take π= 3.14.)

Answers

78.8 and 251.2 is the answer

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Answer:A!

Step-by-step explanation:

Answer:

Step-by-step explanation:

Its A because the plants you see in deserts need water to germinate themselves. Its like cactus. They absorb water like camels store water in their humps.

Convert each radian measure into degrees: 25π18

Answers

Answer:

1432.39

Step-by-step explanation:

27 rad×180pie

answer:1432 with rounding of 10th

What are the vertex and axis of symmetry of the parabola y = x2 + 10x + 30?

Answers

Answer:

x=−5

y=x2+10x+25

Step-by-step explanation:

Because the line of symmetry passes through the vertex, the equation of the line is x=−5.

Which of the following expressions is equal to 6^4
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b. 6 · 4 or 24
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Answers

d is equivalent to 6^4

The answer is D

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Hope this helps :)

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A. 1.000 x 10 to the 4rd power
B. 1.00 x 10 to the 4th power
C. 1.0 x 10 to the 4th power
D. 1 x 10 to the 4th power

Answers

Answer:

B. 1.00 x 10 to the 4th power

Step-by-step explanation:

Una mamá tiene el cuádruplo de la edad de su hijo, y dentro de 5 años, tendrá el triple de años que el. Indica que edad tienen ambos.

Answers

Answer:

The son age is 10 years

And, his mother age be 40 years

Step-by-step explanation:

Given that

The mother is four times the age of her son

And, in 5 years, she will be three times as old as him

We need to find out the ages of both

Here we assume that the age of her son be x

So the mother age be 4x

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Rewrite f(x) into vertex form by completing the square f(x)=−x2+8x+9

Answers

Answer:

vertex = ( 4 , 25 )

Step-by-step explanation:

given a parabola in standard form y = a x 2 + b x + c x ; a ≠ 0

then the x-coordinate of the vertex is

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Y vertex = -(4)squared+8(4)+9=25

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Answers

Answer:b

Step-by-step explanation:

Answer:

0 to 6 because the graph shows 6 and 70 has a 0 in it

Help me which one is it ?

Answers

1\8 is the probability flipping a coin three times and getting three heads in a row

What’s the answerrrr please

Answers

-4,2 that is the answer

A desk drawer contains 8 blue pens, 7 black pens, and 10 green pens. Lawrence will randomly choose one item from the drawer. What is the probability Lawrence will choose a green pen?

Answers

Answer: [tex]\dfrac{2}{5}[/tex]

Step-by-step explanation:

Given

A desk drawer has 8 blue, 7 black, and 10 green pens

The favorable chances of drawing a green pen are 10

Probability is given by the ratio of favorable outcomes to the total outcomes.

So, the probability of drawing a green pen is

[tex]\Rightarrow P=\dfrac{10}{8+7+10}\\\\\Rightarrow P=\dfrac{10}{25}\\\\\Rightarrow P=\dfrac{2}{5}[/tex]

Jerry Jones reported that he cowboys stadium was 7/8 full during Sunday's game. Which decimal is equivalent to the fraction of the stadium that was full on Sunday.

Answers

Answer:

0.875

Step-by-step explanation:

7/8 of stadium was full

Division '7 ÷ 8' is shown , to convert the fraction into decimal

7/8 = 0.875

It is equivalent to the fraction of the stadium that was full on Sunday.

paul is 5 feet tall and casts a 12-foot shadow. A nearby tree casts a 42-foot shadow. how tall is the tree

Answers

17.5 feet is how tall it is

Please help me need ASAP

Answers

Answer:

(2)

The increased amount is 9

which is equivalent to the ratio 5: 25?
A. 1:5
B. 1:21
C. 2:14
D. 3:18
E. 4: 24

Answers

A 1:5
5 divided by 5 = 1
25 divided by 5 is 5

the answer would be A, 1:5

I need help ASAP please

Answers

Answer:

The answer is the second one

Which of the following situations are equal to 90%? Select all that apply. A) 18 out of 24 B) 18 out of 20 C) 36 out of 40 D) 54 out of 60 E) 81 out of 90

Answers

Answer:

b, c, d, e

Step-by-step explanation:

a) 18/24 = 75%

b) 18/20 = 90%

c) 36/40 = 90%

d) 54/60 = 90%

e) 81/90 = 90%

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