PROBABILITY PROBLEM! NEED HELP AND EXPLAIN/SHOW WORK

PROBABILITY PROBLEM! NEED HELP AND EXPLAIN/SHOW WORK
PROBABILITY PROBLEM! NEED HELP AND EXPLAIN/SHOW WORK

Answers

Answer 1
10 + 5 + 1 = 16 - all balls
The probability that the first ball is red:
[tex]P(R)=\dfrac{10}{16}=\dfrac{5}{8}[/tex]
The probability that the second ball is black:
[tex]P(B)=\dfrac{1}{15}[/tex]
Together:
[tex]P(R)\cdot P(B)=\dfrac{5}{8}\cdot\dfrac{1}{15}=\dfrac{1}{24}[/tex]

Related Questions

How to find the volume of a equilateral triangular prism?

Answers

The formula for a prism is the area of the base multiplied by the height. To find the area of the base of a triangular prism you would use the formula for the area of a triangle which is 1/2 base*height and then you would multiply that number by the height of the prism and your answer would need to be in cubic units.

What is the value of x? Round the answer to the nearest tenth. The diagram is not drawn to scale.

Answers

x = 50 

Reason: Chord AB and Chord CD are equal.

We have been given that the chords AB and CD are equal.

Now, we know that two equal chords subtends equal angle at the center of the circle.

The chord CD subtends and angle CPD at the center and the chord AB subtends an angle APB at the center.

Hence, from above mentioned theorem, we can say that

[tex]\angle CPD = \angle APB[/tex]

Now, we have been given that

[tex]\angle CPD =50 ^{\circ} [/tex]

[tex]\angle APB =x ^{\circ} [/tex]

Hence, we have

[tex]x=50^{\circ}[/tex]

Plato explains that we know geometry by _________.

Answers

Plato explains that we know geometry by our gain knowledge through recollection. Our soul is what recollects this place hence we came where there exist unchanging truths. Delivered the theory of Forms, according to which the world people know by means of the senses is just an imitation of the eternal, pure, eternal, and fixed world of the Forms.

if f(x) and it’s inverse function, f-1(x) are both plotted on the same coordinate plane, what is their point of intersection?

Answers

By using basic property of inverse function we got that if f(x) and it’s inverse function are both plotted on the same coordinate plane, then their point of intersection is (3,3)

What is function ?

Function is relation between a set to another set with a property that every element of first set has a unique image in second set.

Here graph of f(x) is given and we have to find the point of intersection of function and it's inverse function

We know that a function and it's inverse function are mirror image of each other with respect to line y=x hence they intersect only at y=x line

By drawing y=x line with the given graph we got that f(x) intersect y=x line at (3,3) hence inverse function will intersect at (3,3)

By using basic property of inverse function we got that if f(x) and it’s inverse function are both plotted on the same coordinate plane, then their point of intersection is (3,3)

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Final answer:

When the graph of a function and its inverse function are plotted on the same coordinate plane, the point of intersection is the point where the two graphs intersect. Therefore, the point of intersection is (x, y).

Explanation:

When the graph of a function and its inverse function are plotted on the same coordinate plane, the point of intersection is the point where the two graphs intersect.

Let's say the point of intersection is (x, y).

This means that both f(x) and f-1(x) have the same x-coordinate, which is x, and the same y-coordinate, which is y.

Therefore, the point of intersection is (x, y).

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The diameter of a bowling ball is 12.57 centimeters. What is this value rounded to the nearest tenth of a centimeter?

Answers

For this case we have the following numerical value:
 12.57 centimeters
 We note that the number is rounded to the nearest hundredth.
 If we want to round the number to the nearest decimal we must rewrite the number.
 Rewriting we have:
 12.6 centimeters
 Answer:
 
this value rounded to the nearest tenth of a centimeter is:
 
12.6 centimeters
12.6 cm is the correct answer.

-2x+3 > x +24

Show steps how you got your solution

Answers

- 2x + 3 > x + 24

First we must get all variables on the same side and constants on the opposite side. To do so we subtract x from the right and the left. Then subtract 3 from both sides as well. 

- 2x - x > 24 - 3 

Now we combine like terms:

- 3x > 21

We must isolate the variable x. In order to do so, we divide both sides by - 3. When you divide by a negative number, you must also flip the inequality so the greater than becomes a less than. 

x < 21 / - 3

x < - 7 is your answer. 
Hello!

You can solve this algebraically

-2x + 3 > x + 24

Subtract x from both sides

-3x + 3 > 24

Subtract 3 from both sides

-3x > 21

Divide both sides by -3

Since you divided by a negative you flip the sign

x < -7

The answer is x < -7 or any number that is greater than -7

Hope this helps!

Can someone please help me with this??

(PLEASE USE THE PICTURES ABOVE)

And please do what it says.

Thanks soo much


thanks

Answers

Asked and answered elsewhere.
https://brainly.com/question/9951374

Which linear expression is a factor of the polynomial function f(x) = x3 + 2x2 − x − 2? x − 2 x + 2 x + 3 x − 3

Answers

f(-2) = -2^3 + 2(-2)^2  - - 2 - 2 =  -8  + 8 + 2 - 2 =  0
So by the factor theorem:-
 x + 2 is a factor   

A group of people are going on a 5 mil hike. They walked 2 1/10 miles in the morning and 1 1/4 mils during the first hr of the afternoon. How many miles do they have to walk?

Answers

Answer: 1 13/20 miles

Explanation:

[tex]5 - 2\cfrac{1}{10} - 1 \cfrac{1}{4} = 5 \cfrac{0}{20} - 2\cfrac{2}{20} - 1 \cfrac{5}{20} = 4 \cfrac{20}{20} - 2\cfrac{2}{20} - 1 \cfrac{5}{20} = 1 \cfrac{13}{20}[/tex]

For a function p(x)= x^2-9, what is the inverse function for the domain [0, infinity\

Answers

An inverse function is a function that reverses another function, so we have a function called:

[tex]p(x)[/tex]

Then, the inverse function will be as follows:

[tex]p^{-1}(x) [/tex]

Given that [tex]y = p(x)[/tex], we need to isolate x in terms of y:

[tex]y = x^{2} -9[/tex]
∴ [tex]y+9 = x^{2}[/tex]

So:

[tex]x=+\sqrt{y+9}[/tex] and [tex]x=-\sqrt{y+9}[/tex]

therefore, exchanging variables x and y:

[tex]y=+\sqrt{x+9}[/tex] and [tex]y=-\sqrt{x+9}[/tex]
[tex]p^{-1}(x)=+\sqrt{x+9}[/tex] and [tex]p^{-1}(x)=-\sqrt{x+9}[/tex]

Which are the figures shown below.

The period T in seconds of a simple pendulum of length L in feet is given by T=2π√L/32. Determine the length in feet of a simple pendulum whose period is 8.72 seconds. Round your answer to the nearest foot.

1972 feet.
387 feet.
62 feet.
256 feet.

Answers

For this case we have the following equation:
 T = 2π√L / 32
 Clearing L we have:
 T / 2π = √L / 32
 (T / 2π) ^ 2 = L / 32
 L = 32 * (T / 2π) ^ 2
 Substituting values:
 L = 32 * (8.72 / (2 * (3.14))) ^ 2
 L = 61.69694511 feet
 Round to the nearest foot:
 L = 62 feet
 Answer:
 
L = 62 feet
 In this situation, you have to use the equation
T = 2π√L / 32
 We need to find L so we have:
 T / 2π = √L / 32
 (T / 2π) ^ 2 = L / 32
 L = 32 * (T / 2π) ^ 2

 Substitute the values:
 L = 32 * (8.72 / (2 * (3.14))) ^ 2
 L = 61.69694511 feet
 L = 62 feet
 So the Answer is
 L = 62 feet

Uppose a jar contains 12 red marbles and 18 blue marbles. if you reach in the jar and pull out 2 marbles at random without replacement, (a) find the probability of getting two red marbles:

Answers


[tex] \frac{12}{30} \times \frac{11}{29} = \frac{22}{145} [/tex]

[tex] \displaystyle
|\Omega|=\binom{30}{2}=\dfrac{30!}{2!28!}=\dfrac{29\cdot30}{2}=435\\
|A|=\binom{12}{2}=\dfrac{12!}{2!10!}=\dfrac{11\cdot12}{2}=66\\\\
P(A)=\dfrac{66}{435}=\dfrac{22}{145}\approx15\% [/tex]

The scale factor of a figure and its enlargement is 6. What is the new length of the enlarged figure if the original length is 3 cm?
3 cm
6 cm
18 cm
36 cm

Answers

You multiply three times six.

3 x 6 = 18


Answer:

The new length of the enlarged figure will 18 cm.

Step-by-step explanation:

A scale factor is a number which scales, or multiplies the original figure by some quantity.

In the equation [tex]y = Cx[/tex], C is a scale factor for x. It is called the constant of proportionality or scale factor of y to x.

As the given length is 3 cm, so with a scale factor of 6, the length of the enlarged figure will be [tex]3\times 6=18[/tex] cm

Therefore, the new length of the enlarged figure will 18 cm.

How do find the measure of side a?

Answers

sin 34 =  a/25
a = 25 sin 34
a =  14 m   to nearest whole number

The measure of side a is 14.

We have,

We use the trigonometric identites:

Sin function

Now,

Sin A = Perpendicular / Hypotenuse

Sin 34 = a / 25

0.56 = a / 25

a = 0.56 x 25

a =  14

Thus,

The measure of side a is 14.

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On n − {1}, the relation r given by a r b iff the prime factorizations of a and b have the same number of 2's. for example, 48 r 80 because 48 = 24 · 3 and 80 = 24 · 5. name three elements in each of these classes: 7, 10, 72.

Answers

yes the answer to the question is 100rx

Haley read three less than twice as many books as her brother did last summer. haley read five books.which equation could you use to find how many books her brother read (b)?

Answers

Your answer would be 2b-3=5
The 2 stands for the "twice as many"
The b stands for her brother.
The 3 stands for the "3 less books"
And the 5 stands for Haley's total.

I hope this helps!

Answer:

2b - 3 = 5

Step-by-step explanation:

If her brother read b number of books last summer, twice the number of books her brother read

= 2b

three less than twice as many books as her brother read

= 2b - 3

If haley read five books and it is same as three less than twice as many books as her brother last summer, then

2b - 3 = 5

Which triangles are similar?

a
b
c
d

Answers

i think A. and D.

hope that's right!!!
Hey there!

The two triangles that are similar are triangles A and D.

I hope this helped! :-)

Please help me on this ?!?!?!

Answers

show the picture of the problem not just the answers and might be able to help you.

I need help on this show steps pleaseeee!!!

Answers

Step #1 - convert 1 ⅓ into a mixed number,

[tex] \frac{1}{2}r - \frac{1}{3} - \frac{4}{3} = - \frac{7}{3} [/tex]

Step #2 - calculate the sum or difference of - ⅓ by -4/3,

[tex] \frac{1}{2}r - \frac{5}{3} = - \frac{7}{3} [/tex]

Step #3 - Multiply both sides by 6,

[tex] \frac{1}{2} (6)r - \frac{5}{3} (6) = - \frac{7}{3} (6)[/tex]

[tex]3r - 10 = - 14[/tex]

Step #4 - Move constant ( - 10 ) to the right and change its sign,

[tex]3r = - 14 + 10[/tex]

Step #5 - Calculate the sum

[tex]3r = - 4[/tex]

Step #6 - Divide both sides by 3 so we can isolate the variable r,

[tex]r = - \frac{4}{3} [/tex]

~~

I hope that helps you out!!

Any more questions, please feel free to ask me and I will gladly help you out!!

~Zoey

Find the height of the cylinder.


options;

4.8 in.

2.4 in.

14.4

7.2 in.

Answers

[tex]\bf \textit{volume of a cylinder}\\\\ V=\pi r^2 h~~ \begin{cases} r=radius\\ h=height\\ -----\\ V=271.4\\ r=6 \end{cases}\implies 271.4=\pi (6)^2h\implies \cfrac{271.4}{\pi (6)^2}=h[/tex]

The height of cylinder is,

⇒ h = 2.4 inches

We have to given that,

In a cylinder,

Volume = 271.4 inches³

And, Radius = 6 inch

Since, We know that,

Volume of cylinder is,

⇒ V = πr²h

Where, V is volume , r is radius and h is height.

Substitute all the values, we get;

⇒ 271.4 = 3.14 × 6² × h

⇒ 271.4 = 3.14 × 36 × h

⇒ 271.4 = 113.04 × h

⇒ h = 2.4 inches

Thus, The height of cylinder is,

⇒ h = 2.4 inches

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Please help me with this
thank u soo much:)

Answers

Point a is minimum
Point b is first quartile
Point c is the median
Point d is the maximum
If this is a whisker plot then the answers are:

A = Minimum Value
B = First Quartile
C = Median
D = Maximum Value

Hope this helps :)

The Venn diagram represents the results of a survey that asked participants whether they would want a bird or a fish as a pet.



Enter your answers in the boxes to complete the two-way table based on the given data.

Answers

Answer with Step-by-step explanation:

As we can see the venn diagram:

number of bird+fish=6

number of bird+not fish=8

number of fish+not bird=19

and number of not fish and not bird=22

Hence, we get the following table

                        Fish           Not Fish            Total

Bird                6                    8                       14

Not Bird         19                  22                       41

Total               25                 30                       55

                Fish    Not Fish   Total

Bird            6            18           14

Not Bird    19           22          41

Total          25           30         55

Enter your answer in the box.

Answers

This is an arithmetic series,
so 
S(n) = (n/2)*(a(1)+a(n))
S(25) = (25/2)*(a(1)+a(25))
n=25
a(n) = 3n-2
a(1)= 3*1-2=1
a(1)=1
a(25) = 3*25-2=75-2=73
a(25)=73

S(25) = (25/2)*(1+73)=(25/2)*74=925
S(25)=925

Answer : 925

please help- Your supposed to find x, y, and z and round to the nearest tenth

Answers

Didn't you mean "you are" or "you're?"

You didn't indicate which problem you wanted your helper to focus on.  So I will arbitrarily choose #2.

This large triangle is made up of two smaller triangles:  the smaller triangle has sides of 2 and x and hypotenuse of y.  The larger triangle has sides x and 5 and hypotenuse z.  Look carefully:  The largest triangle has hypotenuse (2+5) and sides y and z.  Now you have three equations in three unknowns and thus have enough info to find the values of x, y and z.

Think about this.  What should you do first?  Type back your ideas.  Then I'll help you solve this problem.

A culture started with 3,000 bacteria. After 7 hours, it grew to 3,300 bacteria. Predict how many bacteria will be present after 17 hours. Round your answer to the nearest whole number. P=Ae^kt


Answer:3,780

Answers

P=Ae^(kt)
3300=3000e^(7k)
11=e^(7k)
In(11)/7=k
P=Ae^(In(11)/7t)
P=3000e^(In(11)/7(17))= 3780 in population.

the diagonals of a rhombus are 12 centimeters and 16 centimeters. what is the length of one side of the rhombus?

Answers

in a rhombus, the diagonals meet at right-angles, and they bisect each other, namely they cut each other in half, check the picture below.

thus we can use the pythagorean theorem to get one side, keeping in mind that, slanted as it may be, all sides in a rhombus are equal in length.

what is 17.5 of 50???

Answers

17.5% of 50 = 0.175×50 = 8.75
 = 8 3/4
 = 35/4

3.2km/50min X 60min/1hr X 1mi/1.6km

A) 2.4mi/hr
B) 2.4km/hr
C) 12mi/hr
D) 12km/hr

Answers

3.2km    60min       1mi                          km            min
-------- x --------  x ----------- (cancel out:  ---- and   ------   )
50min     1hr         1.6km                       km            min


   2.4 mi     
= ---------
    hr     

answer
A) 2.4mi/hr
Final answer:

The student's conversion calculation of speed units from kilometers per minute to miles per hour yields a speed of 2.4 miles/hour, so the answer is choice A.

Explanation:

The question is a conversion exercise in speed units from kilometers per minute to miles per hour. We have the following information: 3.2 km in 50 min, and we know that 1 mile is equivalent to 1.6 km and 60 min is equivalent to 1 hour. Thus, the conversion is as follows:

3.2 km ÷ 50 min. = 0.064 km/min.

Converting km/min to mi/hr involves multiplying by 60 (minutes in an hour) and dividing by 1.6 (km in a mile), and we get:

(0.064 km/min x 60 min/hr) ÷ 1.6 km/mi. = 2.4 mi/hr.

Hence, the correct answer is (A) 2.4 miles/hour.

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To solve this system of equations by elimination, what operation could be used to eliminate the y-variable and find the value of x? 2x − 4y = 6 −3x + 3y = 12 A) add 3 times the second equation to 4 times the first equation B) add 4 times the second equation to 3 times the first equation C) subtract 3 times the second equation from 4 times the first equation D) subtract 4 times the second equation from 3 times the first equation

Answers

Answer:

Option B is correct.

add 4 times the second equation to 3 times the first equation

Step-by-step explanation:

Given the system of equation:

[tex]2x - 4y = 6[/tex]                         ......[1]

[tex]-3x + 3y =12[/tex]                       .....[2]

Multiply equation [1] by 3 we get;

[tex]3(2x-4y) = 3 \cdot 6[/tex]

Using distributive property; [tex]a\cdot (b+c) = a\cdot b+ a\cdot c[/tex]

6x - 12y = 18                                   .......[3]

Multiply equation [2] by 4 we get;

[tex]4(-3x+3y) = 4 \cdot 12[/tex]

Using distributive property we get;

-12x + 12y = 48                                   ......[4]

Add equation [3] and [4] to eliminate y and solve for x;

(6x -12y) + ( -12x +12y ) = 18 + 48

6x - 12y -12x + 12y = 66

Combine like terms;

6x - 12x = 66

or

-6x = 66

Simplify:

x = -11

Therefore, the operation which could be used to eliminate the y-variable and find the value of x is;

add 4 times the second equation to 3 times the first equation.

Answer:

Option B

Step-by-step explanation:

Given is a system of two equations as

[tex]2x − 4y = 6 \\−3x + 3y = 12[/tex]

To solve them using elimination:

Elimination method is the method of making coefficients of one variable numerically equal

IN the given system we have -4 as coefficient for y in I equation and 3 for y in II equation.

To make them numerically equal with opposite signs we can multiply I equation by 3 and II by 4

WE get

[tex]6x-12y =18\\-12x+12y=48[/tex]

Now if we add these two we are able to eliminate y from the system

Adding gives

[tex]-6x=66\\x=-11[/tex]

So option B is right

One angle of a triangle is three times as large as another. the measure of the third angle is 65 degrees more than that of the smallest angle. find the measure of each angle.

Answers

Let the smaller angle be x.

smaller =  x
larger = 3x
known angle = 65°

All angles add up t10 180:
x + 3x + 65 = 180
4x + 65 = 180
4x = 115
x = 28.75

Smaller angle = 28.75
Larger angle = 86.25

Answer: The angles are 28.75° and 86.25°
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