There are 3 red marbles, 2 blue marbles, and 7 black marbles if you choose one marble, what is the probability that it will be a red marble?

Answers

Answer 1

Answer:

3:12

Step-by-step explanation:

3 + 2 + 7 = 12

3 = red marbles

12 = total marbles

Answer 2

Answer:

Probability of both red =3(182)=3(18!2!16!)=3153

Step-by-step explanation:

Let Ai be the event in which the i-th ball you grab is red. For the first ball you choose, you have 3 red marbles out of a total of 18. Therefore,

P(A1)=318.

For the second marble you grab, given that you already took a red one, that is, given A1, you have 2 red balls out of a total of 17, then

P(A2∣A1)=217.

Finally,

P(A1∩A2)=P(A1)P(A2∣A1)=318217=151.


Related Questions

What is 15% of 60? using a double number line

Answers

Answer:

9

Step-by-step explanation:

60 × 15%

= 60 × 0.15

= 9

Answer:

Step-by-step explanation:

15*60=900/100

9

Evaluate each using the values given.

1. 6c(a+a+a); use a=1, and c=3

Answers

Answer:

54

Step-by-step explanation:

6c(3a)

c = 3

a = 1

6*3(3(1) )

6 * 9

54

Charlie wants to order lunch for his friends. He'll order 6 sandwiches and a $2
kid's meal for his little brother. Charlie has $32. How much can he spend on
each sandwich if they are all the same price?
Choose two answers: one for the inequality that models this situation and
one for the correct answer.

Answers

Answer:

A and C

Step-by-step explanation:

104÷16=
I really need help

Answers

Answer: 6.5, hope this helps you

Answer:

6.5

Step-by-step explanation:

Whats the missing side length answer

Answers

The answer is D) 30.

You divide 40 by 24 since those sides are similar, and you should get about 1.666. You multiply that by 18 to get the missing side length, which is 30.

In order to qualify for a bowling tournament, bowlers bowl 20 games. The results are normal. The average score was 167 with a standard deviation of 24.2.

What is the probability a bowler will score between 162 and 189?

Answers

Answer:

189

Step-by-step explanation:

bc that's just what I think

What is the range of the graphed function?
{x |1< x < 5)
{y |1 < y <5}
{x | x is a real number}
{y|y is a real number}

Answers

Answer:

Please check the explanation.

Step-by-step explanation:

Given the expression

[tex]V=\sqrt[3]{x-1}+3[/tex]

Determining the domain:

We know that the domain of a function is the set of input values for which the function is defined.

From the given graph, it is clear that the function has no undefined points nor domain constraints.

Therefore, the domain is:

{x | x is a real number}

In other words:

[tex]\mathrm{Domain\:of\:}\:\sqrt[3]{x-1}+3\::\quad \begin{bmatrix}\mathrm{Solution:}\:&\:-\infty \:<x<\infty \\ \:\mathrm{Interval\:Notation:}&\:\left(-\infty \:,\:\infty \:\right)\end{bmatrix}[/tex]

Determining the range:

We know that the range of a function is the set of values of the dependent variable for which a function is defined.

It is clear from the graph that the range can be any real number.

i.e. the range is:

{y|y is a real number}

In other words,

[tex]\mathrm{Range\:of\:}\sqrt[3]{x-1}+3:\quad \begin{bmatrix}\mathrm{Solution:}\:&\:-\infty \:<f\left(x\right)<\infty \\ \:\mathrm{Interval\:Notation:}&\:\left(-\infty \:,\:\infty \:\right)\end{bmatrix}[/tex]

Please help if possible due today thank you so much❤️❤️❤️


Which is a negatively skewed distribution?


Answers

Answer:

c

Step-by-step explanation:

the skew is more to the right, which makes it negative

There are 400 marbles in a bag. 60 of the marbles are blue. What percent of the marblesare not blue?

Answers

Answer:

80%

Step-by-step explanation:

400-60= 320

320 is 80% of 400

Alguien me ayuda porfavor

Answers

con que ? no hay nada
En que te puedo ayudar??

Question 1 (2 points)
Jeff is purchasing a car for $29,175 that will depreciate in value 7.5% each year.
Write a function to model the value P of the carafter t years,
If he decides to sell the car after 6 years, what will be the value of his car? Express your answer as a decimal rounded to the nearest hundredth.

Answers

Answer:

p= 18,275

Step-by-step explanation:

The function would be p=29,175(-0.925)^t. You would then substitute t for 6 and solve from there to get p=18,275.

Did it help at all?

Please can someone help me with this maths question ‍♀️:
Solve 5x+2=20

Answers

Answer:

x = 18/5

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Equality Properties

Step-by-step explanation:

Step 1: Define equation

5x + 2 = 20

Step 2: Solve for x

Subtract 2 on both sides:                    5x = 18Divide 5 on both sides:                        x = 18/5

Step 3: Check

Plug in x into the original equation to verify it's a solution.

Substitute in x:                    5(18/5) + 2 = 20Multiply:                               18 + 2 = 20Add:                                     20 = 20

Here we see that 20 does indeed equal 20.

∴ x = 18/5 is a solution to the equation.

Consider the conditional statement: If M is the midpoint of line segment AB, then AB = 2AM.
a. What is the hypothesis p?
b. What is the conclusion q?
c. What is the truth value of the conditional statement if p is false and q is false? Explain your reasoning.

Answers

Answer:

Following are the solution to the given points:

Step-by-step explanation:

In point a:

The middle point of the segment AB will be the hypothesis, which is equal to M.

In point b:

The conclusion of AB = 2AM.  

In point c:

If p q is incorrect, after all, M is not really the middle point of a section AB, then the inference is wrong.

A mathematics teacher wanted to see the correlation between test scores and
homework. The homework grade (x) and test grade (y) are given in the accompanying
table. Write the linear regression equation that represents this set of data, rounding
all coefficients to the nearest hundredth. Using this equation, find the projected test
grade, to the nearest integer, for a student with a homework grade of 49.

Answers

The linear regression equation that represents this set of data is Y = -12.41 + 1.15x and the projected test  grade for a student with a homework grade of 49 is 44 and this can be determined by using the generalized equation of regression.

Given :

A mathematics teacher wanted to see the correlation between test scores and  homework. The homework grade (x) and test grade (y) are given in the accompanying  table.

The generalized regression equation is given below:

Y = a + bX   --- (1)

where b is given by the formula:

[tex]\rm b = \dfrac{N\sum XY-\sum X \sum Y}{N\sum X^2-(\sum X)^2}[/tex]

Now, substitute the values of the known terms in the above formula in order to determine the value of 'b'.

b = 1.15

and the formula of a is given below:

[tex]\rm a = \dfrac{\sum Y - b \sum X}{N}[/tex]

Now, substitute the values of the known terms in the above formula in order to determine the value of 'a'.

a = -12.41

Now, substitute the values of a and b in the equation (1).

Y = -12.41 + 1.15x

Now, at x = 49 the value of Y becomes:

Y = -12.41 + 1.15(49)

Y = 43.94

Y [tex]\approx[/tex] 44

For more information, refer to the link given below:

https://brainly.com/question/7656407

Is this equation linear or non linear

Answers

Answer:

Non-linear

Step-by-step explanation:

This equation represents a reciprocal function.

You can't divide by zero so it never passes the y-axis, therefore it cannot be linear.

The graph of this equation is attached below.

I hope this helps!!

- Kay :)

Non-linear. In linear equations, you don't divide a number by x.

Dana needs to buy a bathroom mirror that is 5 feet wide and 7 feet long. If the mirror sells for $4.98 per square foot, what will the total cost of the mirror be

Answers

Answer 174.30

Step-by-step explanation: 35 x 4.98 is 174.3

98 x 1/10
help me out, please.

Answers

Answer:

9 4/5

Step-by-step explanation:

Answer: 9.8

Step-by-step explanation:

On a piece of paper, graph y< x + 1. Then determine which answer matches
the graph you drew.

Answers

Answer:

Step-by-step explanation:

Susan and Kelvin each receive $100
$
100
as a gift.

Part A

Susan buys a movie ticket for $12.50
$
12.50
and 3
3
buckets of popcorn that cost $14.20
$
14.20
each with her $100
$
100
. Which statement is true?

Answers

Answer:

c

Step-by-step explanation:

someone please help me, it’s for my math homework! :)

Evaluate the following expression:42/12 - 85/25 + 117/30

Answers

Answer:

4

Step-by-step explanation:

Let's first simplify all terms, then convert them to /10:

42/12 = 7/2 = 35/10

85/25 = 17/5 = 34/10

117/30 = 39/10

Then the final addition is:

(35-34+39)/10 = 40/10 = 4

Peter was told by his teacher that he needed to measure the height of the building in which his classroom was located. He backs away from the building and places a mirror on the ground between him and the wall. When he can see the top of the building in the mirror, Peter is 2 feet 9 inches away from the mirror and the mirror is 11 feet away from the wall of the building. Peter knew his eye level was exactly 5 ft 6 inches off of the ground, so he was able to calculate the height of the building. How tall is the building in feet?

Answers

Answer:

IT'S 22 JUsT FOUND OUT

Step-by-step explanation:

I would like help again please and thank you for your help ? If you purchase a $24 pair of shoes at a 10% discount
and a $10 belt at a 25%
discount, what is the total
Of the discounts you
receive. What is the
total price you owe,
before tax

Answers

Answer:

With the discounts, you saved a total of $4.90. You still owe $29.10.

Step-by-step explanation:

Shoes:

10% of 24 is 2.4

The shoes cost 21.60  with the 10% discount and before tax.

Belt:

25% of 10 is 2.5

The belt cost $7.50 with the 25% discount and before tax.

Total:

You still owe 29.10 for the belt and shoes before tax.

You saved $2.4 on the shoes and $2.5 on the belt (total of $4.90)

160 is what % of 40
plz explain

Answers

Answer:

150%

Step-by-step explanation:

this is because you can make a part to whole ratio where you have x/100 (which would symbolize the percent) and 160/40 (which would symbolize the part) then, multiply 160 by 100 to get 16000 and then divide by 40 to fulfill the x. Hope this helps!

help me please........​

Answers

I-
What is that
What grade are u in
I’m sinor and still haven’t seen that
I’m scared

Step-by-step explanation:

a : (-6 , -8)

b: (6 , 8)

I used desmos for the problems

Are these Triangle congruent? How do you know?

a. No
b. Yes, SSS
c. Yes, SAS
d. Yes, ASA
e. Yes, AAS

Answers

C) Yes, SAS! Because they have two congruent sides as well as one angle

Answer:

c

Step-by-step explanation:

12 - 3a for a=3. if a=3, 12 - 3a= ?

Answers

Answer:

3

Step-by-step explanation:

if a=3 then 12-3a = 12-9 = 3

plz help i will report if your not trying to answer​

Answers

Answer:

number 5 is 1.24 x 10 (3)

number 6 is 1.53 x 10 (-4)

hoped that helped:)

Step-by-step explanation:

Please do this it’s on my test and I’m already late I can’t figure it out and I’m struggling so much please help me on this I need it badly

Answers

In order to solve how many problems each person has solved, you have to multiply the fraction by the number of problems on their assignment. To do this, you multiply the numberator by the number of problems and then divide that by the denominator for both Dustin and Kelsey.

For Dustin, 3/8 * 24 = 72 / 8 = 9 problems completed

For Kelsey, 4/15 * 30 = 120/15 = 8 problems completed

Dustin has completed more problems

Answer:9

Step-by-step explanation:

Dustin done more he done 9 and kelsey done 8

write 66% as a fraction. ​

Answers

Answer:

2/3

Hope this helps.

complete the table of values y = 2x + 3

Answers

Answer:

x=0 y =3

x=1 y= 5

x=2 y= 7

Step-by-step explanation:

for first,

1. let's take x = 0

then solving this we get

y=3

2. take x=1 then y = 5

3. take x= 2 then y=7
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