A grab bag contains 8 football cards and 2 basketball cards. an experiment consists of taking one card out of the bag, replacing it, and then selecting another card. determine whether the events are independent or dependent. what is the probability of selecting a football card and then a basketball card? express your answer as a decimal.

Answers

Answer 1
the events are independent...because after the first pick, the card was replaced...that means the second pick has the same sample space. In other words, the first pick is not gonna affect the 2nd pick

8 football, 2 basketball...total of 10

P(1st pick is football) = 8/10 which reduces to 4/5
replace
P(2nd pick is basketball) = 2/10 which reduces to 1/5

P (both) = 4/5 * 1/5 = 4/25 = 0.16 <==



Answer 2

Answer:

Independent - 0.16

Step-by-step explanation:


Related Questions

When factored, the trinomials x^2-2x-15 and x^2-9x+20 have one binomial factor in common. What is this factor?
1. x-7
2. x+7
3. x-5
4. x+5

Answers

x^2-2x-15
(x-5)(x+3)

Proof:
-5+3=-2
-5*3=-15

x^2-9x+20
(x-4)(x-5)

Proof:
-4-5=-9
-4*-5=20

Final answer: (x-5)

The height of the oversized container is 3 m it's diameter is 2 m what is its area?

Answers

9.42 is the answer


i think
the formula to find the area of a container:
( 3.14×radius×radius) + (2×3.14×height)

thus,
(3.14×1×1) + (2×3.14×3)
=21.98 m

Micah takes a job with a starting salary of $78,000 for the first year. He earns a 4% increase each year. How much does Micah make over seven years? $567,840 $616,067 $718,710 $718,499

Answers

Use the formula of the future value of an annuity ordinary which is
Fv=pmt [((1+r)^(t)-1)÷r]
Fv how much he made ?
PMT yearly salary 78000
R rate of increases 0.04
T time 7 years

Fv=78,000×(((1+0.04)^(7)−1)÷(0.04))
Fv=616,066.96 round your answer to get 616067

Answer:

b

Step-by-step explanation:

The graph of f(x) = x2 is shifted 3 units to the right to obtain the graph of g(x). Which of the following equations best describes g(x)?

a. g(x) = (x + 3)2

b. g(x) = x2 − 3

c. g(x) = x2 + 3

d. g(x) = (x − 3)2

Answers

The answer is D because the numbers in the parenthesis determine where the x value is.

Answer:  Option 'd' is correct.

Step-by-step explanation:

Since we have given that

[tex]f(x) = x^2[/tex]

We need to shift the function f(x) 3 units to the right to obtain the graph of g(x).

As we  know that shifting right is the horizontal shift.

And f(x-h) = g(x) , here f shift right h units.

so, After shifting 3 units right, we get that

[tex]g(x)=(x-3)^2[/tex]

Hence, Option 'd' is correct.

Pleaseee help. The longer base of an isosceles trapezoid measures 23 ft. The nonparallel sides measure 9ft, and the base angle measure 80 degrees. Find the length of a diagonal.

Answers

We can start with an altitude of a trapezoid:
h = 9 * sin 80° = 9 * 0.9848 = 8.86 ft.
Then look at the right triangle, where a hypotenuse is 9 and one leg is 8.86. Another leg is x.
x² = 9²- 8.86²
x² = 81 - 78.4996
x = √ 2.5004
x = 1.58
23 - 1.58 = 21.42
Finally the diagonal:
d² = 21.42² + 8.86² = 458.8 + 78.4996 = 537.3
d = √537.3 = 23.18 ≈ 23 ft
Answer:  D.  23 ft.

Determine if the solution set for the system of equations shown is the empty set, contains one point or is infinite. 3x + 2y = 6 x - y = 2

Answers

It contains only one point that is x=6/4 y=-1/2
Hope it helps.

One week, Katie Hopper earned the following commissions: Monday, $124; Tuesday, $88; Wednesday, $62; Thursday, $137; Friday, $195. Find her total amount of commissions for the week

Answers

195+137+124+88+62=$606
This is the answer⬆️

add them together:

124 + 88 + 62 +137 +195 = $606 total

Jack is building a deck that is 8 ft by 27.63 ft. He has the base built; he just needs to cover the surface with wood. When he gets to the hardware store he finds sheets of wood that are four ft by eight ft. Use estimation to determine how many sheets of wood he should buy to cover the surface of the deck.

Answers

The area of the deck is :
A ( deck ) = 8 * 27.63 = 221.04 ft²
The area of the sheet of wood:
A ( sheet ) = 4 * 8 = 32 ft²
221.04 : 32 = 6.9 ≈ 7 ( we need a whole number )
Answer: He should buy 7 sheets of wood to cover the surface of the deck.

to the nearest whole degree, what angle measure has a sine of .9762

Answers

As Jdoe said, look up the arc sine of .9762
and if you just want the answer it is:
 77.475 Degrees
and
it is 102.525 Degrees


What is the missing step in this proof?

Answers

The missing proof is the third statement

¹²³⁴⁵⁶⁷⁸⁹⁰⁹⁸⁷⁶⁵⁴³²¹
₁¹₁¹₁

Answer:

Option C is correct.

The missing steps in this proof is; [tex]\angle 1 \cong \angle 4[/tex] and [tex]\angle 3 \cong \angle 5[/tex].

Explanation:         

Given ΔABC.

Prove that:  The sum of the interior angle measures of ΔABC is [tex]180^{\circ}[/tex]

Let A ,B and C forms a triangle    [Given]

Parallel lines are those two lines that are always the same distance apart and never touch.

then, by the definition of parallel lines and labeling angles

DE be the line passing through B, parallel to AC, with angles as labelled in the figure as shown below in the attachment.

Alternative Interior Angle theorem states that the angles that are formed on opposite sides of the transversal and inside the two lines are alternate interior angles also this theorem says that when the lines are parallel, then the alternate interior angles are equal.

Then,

[tex]\angle 1 \cong \angle 4[/tex] and                              

[tex]\angle 3 \cong \angle 5[/tex]        [By Alternative Interior angle theorem]            

Angles are always congruent if their measures in degrees are equal.

therefore,

[tex]m\angle 1 =m\angle 4[/tex] and

[tex]m\angle 3=m\angle 5[/tex]      [By Congruent Angle have equal measure]                                                                   ......[1]

Straight Angles states that angles on one side of a straight line always add to 180 degrees.

From the given figure;

By the addition angle and definition of straight angle we get;

[tex]m\angle 4 +m\angle 2 +m\angle 5 =180^{\circ}[/tex]      ......[2]

Substituting equation [1] in [2] we get;

[tex]m\angle 1 +m\angle 2 +m\angle 3 =180^{\circ}[/tex]  

Therefore, the sum of the interior angles measures of triangle ABC is [tex]180^{\circ}[/tex]

can someone help me with this factoring problem? I forgot how to factor.

Factor completely −3x2 + 6x − 9.

−3(x2 − 2x + 3)
−1(x2 − 6x + 9)
−3x(x2 − 2x + 3)
−3(x2 + 2x − 3)

Answers

−3x^2 + 6x − 9
= -3(x^2 - 2x + 3)

answer
-3(x^2 - 2x + 3) first one
First factor out the GCF
-3(x^2-2x+3)

To check, multiply what you took out by each term in the trinomial and make sure it's the same

-3*x^2=-3x^2
-3*-2x=6x
-3*3=-9

Evaluate 9 y 1 − y 0 9y1−y0  if y=−8 y=−8 .

Answers

9y^1 - y^0....it is not necessary to put ^1
9y - y^0...when y = -8
9(-8) - 1......anything to the ^0 = 1
-72 - 1 =
-73 <==

Answer:


Step-by-step explanation:


HELP PLEASE THANKS:(

Answers

2(2)+3y=13
4+3y=13
3y=9
y=3
The answer is B

When college students are asked to solve a puzzle problem independently, only about 10% solve it correctly. then, when students who did not solve the problem were allowed to discuss the problem together, 75% got it right. this illustrates the participants' _____?

Answers

The correct answer to fill in the blank is:

“Cognitive flexibility”

Cognitive flexibility refers to a person’s ability to adapt the mental processing strategies to face new and unexpected situations or problems. In this case, some of the students who initially did not solve the problem transformed their way of solving the puzzle after the discussion thus getting it right the next time.

using the diagram what is the intersection of plane ABCD and gc

Answers

The intersection of plane ABCD is plane EFGH ang gc is dh

how much would an 185 astronaut weigh on the moon?

Answers

He or she would be 301 pounds.

Write 121 raised to the one-half power equals 11 as a logarithmic function

Answers

[tex]a^b=c[/tex] translates to [tex]log_a(c)=b[/tex]
so
[tex]121^\frac{1}{2}=11[/tex] translates to [tex]log_{121}(11)=\frac{1}{2}[/tex]

If BC = 4.5, CD = 7.7, and AD = 16.7, find AB to the nearest tenth.

A. 2.1

B. 28.6

C. 9.8

D. 2.2

Answers

I think the answer is B not sure
ANSWER

[tex]9.8[/tex]


EXPLANATION

Triangle ABC is similar to triangle ADC,
therefore the corresponding sides sides are in the same proportion.


[tex] \frac{AB}{AD} = \frac{BC}{CD} [/tex]



We substitute the values to obtain,


[tex] \frac{AB}{16.7} = \frac{4.5}{7.7} [/tex]


We multiply through by
[tex]16.7[/tex]

to get,

[tex] AB= \frac{4.5}{7.7} \times 16.7[/tex]

This simplifies to give us,

[tex] AB= 9.75940259402....[/tex]

To the nearest tenth,

[tex] AB= 9.8[/tex]

The correct answer is C

Express 257.36 multiplied by 10 in scientific notation

Answers

The answer is:  " 2.5736 * 10³  " .
__________________________________________________________

Write the equation of the line that passes through the points (-2,3) and (-2,5)

Answers

Since both points have -2 as the x value, the equation is x=-2

What is the length of the third side of the right triangle?
( Best explained and correct answer gets brainliest. )

Answers

6^2 + 3^2 = x^2

36 + 9 = x^2

45=X^2

X= sqrt(45) = 3squareroot5

 answer is A

You flip a coin and roll a number cube. What is the probability that you flip tails and roll a number less than five?

Answers

1 2 3 4 5 6

Tail 1+T 2+T 3+T 4+T 5+T 6+T

Heads 1+H 2+H 3+H 4+H 5+H 6+H

So as you can see from about there are 12 different outcomes
There are 6 chances in getting a tails bit only 4 are less that 5 so you answer is 4/12
(You don't simplify probability)

Jennifer is on a trip and travels a distance of 150 miles. she spends some of her time walking, and some of her time travelling by train. if she spends w hours walking and t hours travelling by train, what is the meaning of 3w in the equation below? 50t + 3w =150

Answers

Final answer:

In the equation 50t + 3w = 150, 3w represents the distance Jennifer travels by walking in 3 hours.

Explanation:

In the equation 50t + 3w = 150, the term 3w represents the distance Jennifer travels by walking. Since w represents the number of hours she spends walking, 3w represents the distance she walks in 3 hours. This is because the rate of walking is constant, so if Jennifer walks for 1 hour and covers a certain distance, she would walk 3 times that distance in 3 hours.

Solve the inequality -2x is less than or equal to 3x + 1 is less than or equal to 10

Answers

-2x[tex] \leq [/tex]3x+1[tex] \leq [/tex]10
[tex] \frac{-2x-1}{3} \leq x \leq 3[/tex]
this is what i understood from what you typed...

What are the amplitude, period, and midline of f(x) = 3 cos(4x − π) + 2?

Answers

Amplitude: 3; period: pi/2; midline: y = 2

Answer:

The amplitude of the function is 3, period of the function is [tex]\frac{\pi}{2}[/tex] and midline of the function is 2.

Step-by-step explanation:

The given function is

[tex]f(x)=3\cos(4x-\pi)+2[/tex]               .... (1)

The standard form of a Cosine function is

[tex]g(x)=a\cos(bx+c)+d[/tex]               ... (2)

where, a is amplitude, period is [tex]\frac{2\pi}{b}[/tex] and d is midline.

From (1) and (2), we get

[tex]a=3,b=4,d=2[/tex]

The amplitude of the function is

[tex]a=3[/tex]

The period of the function is

[tex]\frac{2\pi}{b}=\frac{2\pi}{4}=\frac{\pi}{2}[/tex]

The midline of the function is

[tex]d=2[/tex]

Therefore the amplitude of the function is 3, period of the function is [tex]\frac{\pi}{2}[/tex] and midline of the function is 2.

How to solve math problems with rules of exponents?

Answers

you have to multiply that number by the number of the exponent

for example: 3^2 the answer would be 9 because it has to be 3 times 3

another example is 6^3 it would be 6 times 6 times 6 and that would be 216

Final answer:

When solving math problems with rules of exponents, it is important to understand key concepts such as multiplication of exponentials, taking square roots of exponentials, and dividing exponentials.

Explanation:

When solving math problems with rules of exponents, there are several key concepts to keep in mind:

Multiplication of Exponentials: Multiply the digit terms in the usual way and add the exponents of the exponential terms.Taking Square Roots of Exponentials: If necessary, decrease or increase the exponential term so that the power of 10 is evenly divisible by 2. Extract the square root of the digit term and divide the exponential term by 2.Dividing Exponentials: Divide the numbers out front and subtract the exponents.

It is important to understand these rules and practice applying them to various problems in order to master solving math problems with rules of exponents.

If s is a sequence of consecutive multiples of 3, how many multiples of 9 are there in s? (1) there are 15 terms in s. (2) the greatest term of s is 126.

Answers


[tex]\it a_{15} =126=3\cdot42 \\\;\\a_1=3n=? \\\;\\ 3, 6, 9, 12, ... , 3n, ..., 3\cdot42 [/tex]

[tex]\it 42-(n-1) =15 \Rightarrow n-1=42-15=27 \Rightarrow n=28 \Rightarrow \\\;\\ \Rightarrow a_1=3\cdot28= 84[/tex]

Now, we have the sequence :

[tex]\it a_1= 3\cdot28 = 84 \notin M_9 \\\;\\ a_2= 3\cdot29 = 87 \notin M_9 \\\;\\ a_3= 3\cdot30 = 90 \in M_9 \\\;\\ \vdots[/tex]

[tex]\it a_{15} =3\cdot42=126 \in M_9 \\\;\\ 90\leq9\cdot k\leq126 |:9 \Rightarrow 10\leq k\leq14 \Rightarrow k \in \{10, 11, 12, 13, 14\}[/tex]

It implies 5 multiples of 9

At a glance :  {90,  99,  108,  117,  126}


a lab researcher wants to find out whether mice will run through a maze quicker during the day or at night, after training. He has 100 mice available. He randomly assigns 50 of them into ech group. He trains the first group to run the maze ar 9:00am and trains the sevond group to run the maze ar 9:00 pm. Each mouse is trained the same way, and the last 3 years run times are recored. Describe what is being measured in this experiment and what variable is being manipulated?

Answers

In this case, since the run times are the one being compared and recorded, therefore the data being measured in the experiment is the run times.

The difference of the two groups of mice is the time of the day that the mice run, day or night. Therefore the variable being manipulated is the time of the day.

In the diagram, which two points are shown to be collinear?

Answers

In the given diagram, the points that are shown to be collinear are H and E.

Collinearity in geometry refers to the condition where three or more points lie on the same straight line. In this case, points H and E are collinear as they lie on the same straight line, which is represented by a vertical double-headed arrow passing through them.

The diagram consists of two parallelograms, labeled 'I M' and 'E P', with three points inside each. In the parallelogram 'I M', the points are labeled as I, H, and J from top to bottom. Similarly, in the parallelogram 'E P', the points are labeled as F, E, and G from top to bottom. Among these points, only H and E share the same straight line, making them collinear. The other points do not share this line and hence are not collinear with H and E. This concept is fundamental in understanding geometric relationships and properties.

In triangle def, FE = 13 and angle f equals 34. Find DF to the nearest tenth.

Answers

The answer is 15.7. Hope this helps.
The answer that you are looking for is 15.7. :)
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