Mary has a box full of apples:



First, Tom takes out two more than half of the apples.

Then, Linda takes out two fewer than half of the remaining apples.

Now, there are only 20 apples left in the box.

How many apples were there in the box originally?

Answer:

i thinnk A

Step-by-step explanation:

Complete question is;

A lot of 10 components contains 4 that are defective. Two components are drawn at random and tested. Let A be the event that the first component drawn is defective, and let B be the event that the second component drawn is defective. Write your answer as a fraction or a decimal, rounded to four decimal places.

(a) Find P(A)

(b) Find P (B|A)

(c) Find P(A and B)

(d) Are A and B independent?

Answer:

A) P(A) = 0.4

B) P(B|A) = 1/3

C) P(A and B) = 2/15

D) They are not independent

Step-by-step explanation:

We are told that A is the event that the first component drawn is defective, and B is the event that the second component drawn is defective.

A) Since 4 out of the 10 components are defective, then;

P(A) = 4/10 = 0.4

B) After taking 1 out of the 10, there will be 9 left and 3 defective ones left.

Thus; P(B|A) = 3/9 = 1/3

C) P(A and B) = P(A) × P(B|A)

Thus;

P(A and B) = 4/10 × 1/3

P(A and B) = 4/30 = 2/15

D) They are not independent because B can't be done until A is done whereby the first component is drawn.

Answer:

Answer is -7      Hope this helps :D

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

(*￣3￣)╭ When subtracting they both equal the same of -2

Answer:

m=-3/2

Step-by-step explanation:

Answer:

5/7

Step-by-step explanation:

Answer:

130/231

Step-by-step explanation:

you just plug in the values of x, y, and z so:

[tex]\frac{-\frac{2}{3}*\frac{5}{7} }{-\frac{11}{13} }[/tex]

start by simplifying the top:

[tex]\frac{-\frac{10}{21}}{-\frac{11}{13} }[/tex]

divide:

[tex]-\frac{10}{21}[/tex]÷[tex]-\frac{11}{13}[/tex]

= [tex]-\frac{10}{21} * -\frac{13}{11}[/tex]

= [tex]\frac{130}{231}[/tex]

Answer: I’m not for sure but I think it is the third one

Step-by-step explanation:

Answer:

2+13d

Step-by-step explanation:

Answer:

That would equal.... 2 hours and 16 minutes

Have a great day!

Answer:

The last one, Half of the employees earn higher than $40,000

Step-by-step explanation:

The MEDIAN, or Middle salary is $40,000. That is the numbed that is right between all of the salaries. So since it is in the middle, then half of the people are above it, therefore it is the last one.

Answer:

6i+8=2(3i-2)+8

Step-by-step explanation:

Answer:

A test of two independent means.

Step-by-step explanation:

The test above is comparing the two independent mean scores (mean before taking her class ; μ1 and mean score after taking her class, μ2. This two mean values are tested to ascertain if there exist any statistical difference between them. This differs from the proportion which is ecekuared by the ratio of success or failure. The single mean and single proportion test only has one group which its mean or proportion is tested.

The null and alternative hypothesis for two independent sample means may be expressed thus :

H0 : μ1 = μ2

Alternative hypothesis

H1 : μ1 ≠ μ2

Answer:

110 students

Step-by-step explanation:

%40 Divide 30

30 divided by %40 is 0.75

SO there is 60% left

%60 divided by 0.75

That is 80

80 + 30 =

110

Answer:

A) or the first one is the correct answer

Step-by-step explanation:

To check just substitute the intersection point into the equation, as the intersection point is (3,2), -3 * 3 + 11 = 2 and 5/3 * 3 - 3 =2, so both equation satisfied.

Answer:

I can't see them but whichever one is 157 is the correct angle

Step-by-step explanation:

Supplementary angles are angles that equal 180 degrees.

180 - 33 = 157

So whichever angle equals 157 degrees, that is the correct one

subtract the degree given from 180

Answer:

.923 goals per game

Step-by-step explanation:

All you have to do is divide the number of goals by the number of games.

767/831 = .923

Answer:

Step-by-step explanation:

Since we know the total surface area of a prism is equal to the sum of all its faces, i.e., the floor, walls, and roof of a prism. Therefore, the surface area of a prism formula is given as: Total surface area of a prism = 2 x area of the base + perimeter of the base x Height.

mark me brill please

Answer:

Step-by-step explanation:

From the graph, the initial distance of the cyclist decreases with time before it starts to increase at the same rate.

i. When t = 60 minutes,

distance = (60 -60)

              = 0

ii. When t = 120 minutes,

distance = (120 -60)

               = 20 km

This implies that the endpoint of the cyclist's race was 20 km from the water station which took 60 minutes. So that on meeting the endpoint, the cyclist cycled back towards the water station at the same rate.

Answer:

A) 2/3

Step-by-step explanation:

Just write it how the questions says it 2/3. I hope this helps :)

Answer:

A. 2/3 uh welcome :-) :-) :-) :-) :-) :-) :-) :-) :-)

EDITED: Answer: Phillip can order 12 different ways of ice cream.

Step-by-step explanation:

Ahem.

He can only have Vanilla or Chocolate. So let's pet them in a separate Row.

Vanilla

Chocolate

1.With Sprinkles

2.With Almonds

3.With Hot Fudge

4.With Sprinkles and Almonds

5.With Sprinkles and Hot Fudge

6.With Almonds and Hot Fudge

Answer: B, Iman has less than $12.

Step-by-step explanation: The sign shown is less than.

Answer:

Sum is 1836.

Step-by-step explanation:

As we know,

average= sum/total numbers

153=sum/12

153*12=sum

sum=1836

Step-by-step explanation:

3x+8<4x−12

Move all terms containing x

to the left side of the inequality.

Tap for more steps...

−x+8<−12

Move all terms not containing x

−x<−20

x>20

Interval Notation:(20,∞)

The theoretical probability of the given event with one spin p(5) is,

⇒ p (5) = 1 / 8

The word probability refers to the likelihood of an event occurring. Probability means possibility. And,  It is branch of mathematics that deals with the occurrence of a random event. The value is expressed from zero to one.

We have to given that;

The spinner is used in a game.

Since, There are total 8 outcomes in spin.

Hence. The theoretical probability of the given event with one spin p(5) is,

⇒ p (5) = 1 / 8

Thus, The value of theoretical probability of the event with one spin p(5) is,

⇒ p (5) = 1 / 8

Learn more about the probability visit:

https://brainly.com/question/13604758

#SPJ7

Answer:

35

Step-by-step explanation:

20% = 7

Therefore, 100% = Total Points By Whole Team

20% x 5 = 100%

7 x 5 = 35 Points