60 percent of students have car and iPad 70 percent have a car
What is probability that a student with a car also has an iPod

Answers

Answer 1

Answer:

[tex]P =0.857[/tex]

Step-by-step explanation:

We know that 60% of students have an iPad and a car and 70% have a car.

If we call A the event "have an iPad" and call the event B "have a car"

So

[tex]P (A\ and\ B) = 0.6\\\\P(B) = 0.7[/tex]

We look for the probability that a student with a car also has an iPad. This is

[tex]P (A | B) = \frac{P(A\ and\ B)}{P(B)}\\\\P (A | B) = \frac{0.6}{0.7}\\\\P (A | B) = 0.857[/tex]

Answer 2

Answer:

86%

Step-by-step explanation:

To solve this problem you need to use the formula for conditional probability.  

P(Ipod|Car) = P(Car and Ipod)P(Car).

P(a student with a car also has an iPod) = 0.6/0.7 = 0.857 = 86%


Related Questions

prime factorization of 52​

Answers

Answer:

The first prime factor we test is 2:

52 / 2 = 26

26 / 2 = 13

13 is a prime number so the prime factorization is

2 * 2 * 13 = 52

Step-by-step explanation:

52 is a composite number. 52 = 1 x 52, 2 x 26, or 4 x 13. Factors of 52: 1, 2, 4, 13, 26, 52.

I haven’t done area in a while and now we have to do with algebra, can anyone please help me with this? Thanks!

Answers

Answer:   The area of the triangle is:

____________________________________________________

                         →    "  (4x²  +  6x)  cm³  " .

____________________________________________________

Step-by-step explanation:

____________________________________________________

The formula for the "Area, "A" ; of a triangle is:

 A = (1/2) * (baselength) * (perpendicular height) ;

            →  that is:

            →    A = (1/2) * b * h ;

____________________________________________________

The Area, "A" ; should be in "cubic units" ;  in our case, "cubic centimeters" ;

                                                                                       or;  " cm³ " .

____________________________________________________

 Given:  baselength:  "b" = " 4x "  ;

             perpendicular height:  " h = (2x + 3) " ;

____________________________________________________

 Plug in these values into the equation/formula:

           A = (1/2) * b * h ;

         →  A = (1/2) * (4x) * (2x + 3) ;

                →  (1/2) * 4x = 2x ;

         →  A = 2x (2x + 3)  cm³

____________________________________________________

         →  2x (2x + 3) = ?

____________________________________________________

 Note the "distributive property" of multiplication:

        →  a(b + c) = ab + ac .

____________________________________________________

As such:

         →  2x (2x + 3)  =   2x(2x) + (2x)(3) ;

                                 =    4x²  +  6x  ;   ____________________________________________________

The area of the triangle is:  " (4x² + 6x) cm³ " .

________________________________________________

Hope this helps!

       Best wishes in your academic endeavors

                — and within the "Brainly" community!

____________________________________________________

Help me please anyone!

Answers

Answer:

1) 13(2) + 2m = A

2) 70

Step-by-step explanation:

The answer in the there:

Please need help very badly.
Find the area of the shaded area.
Round to the nearest tenth

Answers

Answer:

192.5 ft²

Step-by-step explanation:

Area of the sector

= (360-100)/360 x π(8.35)²

= 158.195 ft²

Area of the triangle

= 1/2 (8.35)(8.35) sin (100)

= 34.3316 ft²

Area of the shaded part

= 158.195 + 34.3316

= 192.5 ft²

in triangle ABC, what is the measure of angle C​

Answers

It is any fraction except 0 of 180°.

Answer:

36 degrees

Step-by-step explanation:

expand 2(x+3) plss coukd u expand it​

Answers

Answer:

2x + 6

Step-by-step explanation:

Each term in the parenthesis is multiplied by the 2 outside, that is

2(x + 3)

= (2 × x) + (2 × 3)

= 2x + 6

What are two numbers that multiply to -90 but add up to 1?
I'm so bad at facts ;-;

Answers

10 and -9. 10 times -9 equals -90 and 10+ -9 equals 1

What is the value of x?
A.30 B.45 C.85 D.90

Answers

Answer:

45°

Step-by-step explanation:

This is the inscribed angle, in which the angle is 1/2 of the opposite arc. The opposite arc for this question measures at 90°. Divide by 2.

90/2 = 45

45, or B)45° is your answer.

~

What should I type here? Will give Brainliest and 25 points Help ASAP!

Answers

Answer:

6+10=16 That is your length.

Step-by-step explanation:

Answer:

POINTSS

Step-by-step explanation:

I WANT POIITNS

what is the value of x, 6x +2=180

Answers

Answer: [tex]x=\frac{89}{3}[/tex] or [tex]26\frac{2}{3}[/tex]

[tex]\mathrm{Subtract\:}2\mathrm{\:from\:both\:sides}\\6x+2-2=180-2\\6x=178[/tex]

[tex]\mathrm{Divide\:both\:sides\:by\:}6\\\frac{6x}{6}=\frac{178}{6}\\[/tex]

[tex]x=\frac{89}{3}[/tex]

Hope this helps and have a great day!!!

Answer: there are three answers. the exatct, decimal, and mixed. i will give them all!

exact: X= 89/3

decimal: x= 29.6

mixed: x= 29 2/3

Step-by-step explanation:

Find the slope and y-intercept of the line. y=-x+7

Answers

Answer:

slope = - 1, y- intercept = 7

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = - x + 7 ← is in slope- intercept form

with slope m = - 1 and y- intercept c = 7

The slope of the line y = -x + 7 is -1, and the y-intercept is 7.

To determine the slope and y-intercept of the line given by the equation y = -x + 7, we first recognize that it is in slope-intercept form, which is y = mx + b.

Identify the slope (m): In the equation y = -x + 7, the coefficient of x is -1. Thus, the slope of the line is -1.

Identify the y-intercept (b): The constant term in the equation is 7. Thus, the y-intercept is 7, meaning the line intersects the y-axis at the point (0, 7).

The slope of the line y = -x + 7 is -1, and the y-intercept is 7.

Divide and answer in simplest form: 5 3 ÷ 3

Answers

Answer: 17.7 (rounded)

Step-by-step explanation:

53/3= 17.6 ..

17.6 rounded is 17.7

Answer:

result is 17.7

Step-by-step explanation:

the 7 in 72 represents how many times the value of the 7 in 78

Answers

Answer:

1

Step-by-step explanation:

Knowing what place values are, we know that since both of those numbers have the 7 in the tens place, it represents 70.  So both of those number are 70 plus another number (under 10)

Answer:

1

Step-by-step explanation:

1

Convert z = 8cos72° + 8isin72° from polar form to rectangular form.​

Answers

Answer:

The rectangular form of z = 8 cos72° + 8 sin72° is z = (2.5 , 7.6)

Step-by-step explanation:

* Lets revise how to change from polar form to rectangular form

- Cartesian Coordinates (x , y) and Polar Coordinates (r , θ)

- Where x = r cosФ , y = r sinФ

* To convert from Polar Coordinates (r , θ) to Cartesian Coordinates (x , y)

 # x = r × cos( θ )

 # y = r × sin( θ )

* In the problem

∵ z = 8 cos72° + 8 sin72°

∴ r = 8

∴ Ф = 72°

∵ x = r cosФ

∴ x = 8 cos72° = 2.5

∵ y = r cosФ

∴ y = 8 sin72° = 7.6

* The rectangular form of z = 8 cos72° + 8 sin72° is z = (2.5 , 7.6)

Choose the TRUE statements.

The absolute value of a number 35 units to the left of zero on a number line is 35.
The absolute value of a number 49 units to the left of zero on a number line is −49.
The absolute value of a number 12 units to the left of zero on a number line is 12.
The absolute value of a number 125 units to the right of zero on a number line is 125.

Answers

Answer:

The absolute value of a number 35 units to the left of zero on a number line is 35.

The absolute value of a number 12 units to the left of zero on a number line is 12.

The absolute value of a number 125 units to the right of zero on a number line is 125.by-step explanation:

Correct:

The absolute value of a number 35 units to the left of zero on a number line is 35.

The absolute value of a number 12 units to the left of zero on a number line is 12.

The absolute value of a number 125 units to the right of zero on a number line is 125.

Wrong:

The absolute value of 49 units to the left of zero on a number line is -49.

This answer is wrong because when u use absolute value, ur final number is always going to be positive, but i this case it’s negative so it wrong.

Have a good day! Hope this helped!!❤️❤️

A cookie recipe requires 3/4 cup of flour to make 1.5 dozen cookies. How much flour is needed to make 1 dozen cookies

Answers

Answer:

half a cup of flower -> 1/2

Step-by-step explanation:

i used a proportion to figure this out.

About how many feet of fencing are needed to enclose a rectangular garden with a 30 foot pond side and a 40 foot long diagonal

Answers

Answer:

140

Step-by-step explanation:

30+30=60

40+40=80

60+80=140

Answer: Hello there!

If you want to enclose a rectangular garden, then the feet of fencing that you need are equal to the perimeter of the rectangle, this is, the sum of all the sides of the rectangle.

We know that the rectangle has a 30ft pond side and a 40ft long diagonal.

this 40ft diagonal is the hypotenuse of a triangle rectangle where the cathetus is the sides of the rectangle; we know that one of the sides are of 30 ft, and we want to find the other:

Using the Pythagorean theorem; we know that:

[tex]40^{2}  = 30^{2} + x^{2}[/tex]

where x is the length of the other side that we don't know yet.

[tex]x = \sqrt{40^{2} - 30^{2}  }  = 26.5ft[/tex]

Then your rectangle has a 30ft side, and a 26.5ft side (and has two of both)

Then the perimeter is:

30ft + 30ft + 26.5ft + 26.5ft = 113ft

One half the difference of the cube of a number, x, and three

Answers

Answer:

(1/2)(x³ - 3)

Step-by-step explanation:

That would be   (1/2)(x³ - 3).

The expression ' one-half difference of a number cubed and one' is written as [tex]\frac{1}{2} (x^3 - 1)[/tex].

Let the number be [tex]x[/tex].

The cube of the number is [tex]x^3[/tex].

Difference of the cube of the number with [tex]1[/tex] is [tex]x^3 - 1[/tex].

Now, one-half difference of a number cubed and one is represent as,

[tex]\frac{1}{2} (x^3 - 1)[/tex].

So, the expression ' one-half difference of a number cubed and one' is written as [tex]\frac{1}{2} (x^3 - 1)[/tex].

Learn more about expressions here:https:

//brainly.com/question/13947055?referrer=searchResults

3.7 ÷ 1.1 = ? Round to the nearest hundredth. A. 4.8 B. 0.297 C. 4.07 D. 3.36

Answers

The answer is D.

Hope this helps!

Answer:

D. 3.36

Step-by-step explanation:

Just by intuition, we can see that 3.7 / 1.1 will give a result somewhere around 3.3 (forget the decimal point, think 37 / 11).  That automatically allows you to zoom in on the correct answer, based on the other choices.

But let's verify it too.

3.7 / 1.1 = 3.363636

They ask to round to the nearest hundredth, so 3.363636 becomes 3.36

Use the bar graph. Describe how the amount of practice time changed from Week 1 to Week 4

Answers

there is no bar graph here

suppose the probability of success in a binomial event is 0.15. what is the probability of failure

Answers

Answer:

Step-by-step explanation:

85

A basketball coach claims that the team's players commit, on average, no more than 10 fouls per game. Let µ represent the team's average number of fouls per game. Another coach thinks that these players create more fouls.

What is the null hypothesis, H0, for this situation?
(B) u ≤ 10

What is the alternative hypothesis, Ha, for this situation?
(B) u > 10

What type of significance test should be used for this situation?
A right-tailed test

These are the correct answers but I don't know the explanations for them someone help me out

Answers

Answer:

H0: u ≤ 10

Ha: u > 10

A right-tailed test

Step-by-step explanation:

In hypothesis testing there are two types of hypotheses;

The null hypothesis, H0 and the alternative hypothesis, Ha. The null hypothesis is the hypothesis of no difference and as such it always has an equality sign;

=, ≤, ≥

On the other hand the alternative hypothesis complements the null hypothesis meaning that if the null hypothesis is rejected then we take the alternative hypothesis to be true.

In order to identify the null and alternative hypothesis we look out for specific key words that will provide us with information on the type of inequality sign. In this scenario, the coach claims that the average number of fouls committed per game is no more than 10. Since µ represents the team's average number of fouls per game, this statement can be written in mathematical symbols as;

u ≤ 10, that is u is no more than 10; average number of fouls committed per game is no more than 10.

This statement will be our null hypothesis since it contains an equality sign.

H0: u ≤ 10

The complement of this statement will enable us deduce the alternative hypothesis. The complement of this statement can be found in the claim of the second coach who thinks that these players create more fouls, to be specific more than 10 fouls. In mathematical notation this claim can be written as;

u > 10, more than 10 fouls.

This statement will be our alternative hypothesis since it complements the null hypothesis;

Ha: u > 10

The type of significance test to be carried out in hypothesis testing emanates from the inequality sign of the alternative hypothesis. The following are the key points to note, if the alternative hypothesis contains;

≠, then this automatically becomes a two tailed test

<, then this automatically becomes a left tailed test since the inequality sign is pointing towards the left.

>, then this automatically becomes a right tailed test since the inequality sign is pointing towards the right.

Our alternative hypothesis contains >, hence this will be a right-tailed test .

Answer:

Answer is B

Step-by-step explanation:

Please help
Me need help
Erode 12 am

Answers

answer is 42000(1-.08)^6

Answer:

5)[tex]y=42000(1-0.08)^6[/tex]

6) 25467

Step-by-step explanation:

5) Use the formula;

[tex]y=y_0(1-r\%)^t[/tex]

where [tex]y_0=42000[/tex] dollars is the initial value of the car.

[tex]r\%=0.08[/tex]

and

t=6 years.

We plug in these values to obtain;

[tex]y=42000(1-0.08)^6[/tex]

Third choice is correct

6) The expected value of the car after 6 years is

[tex]y=254666.910[/tex]

We round to the nearest tenth to obtain;$ 25467

One serving of vegetables has 60 calories. Write the unit rate as a ratio. Then write an equivalent ratio.

Answers

Answer:

1:60, 2:120

Step-by-step explanation:

In one serivng there are 60 calories, i.e. 60 calories per serving. This is 1:60, an equivalent is 2:120

1:60, 9:540

Hope this helps!

Please help me!! Or can you just tell me why the statement is false

Answers

Answer:

Because 0 is basically nothing. This would only change if X=-9. In that case , |x| < 0.

Step-by-step explanation:

Im just a sixth grader so..........

Need Help ASAP!!


What’s the future value of a $1,000 investment compounded at 8% semiannually for five years?

Answers

Answer:

$1480.24

Step-by-step explanation:

This will be solved by the formula:

[tex]FV=I(1+r)^t[/tex]

Where

FV is the future value (what we are looking for)

I is the initial amount (which is $1000)

r is the rate of interest per period (8% is annual interest, but the period is SEMI-ANNUAL, that's 6 months, half of yearly. So r would be half of 8%, which is 4% or r = 0.04)

t is the times compounding occurs in the whole time (The whole time period is 5 years, but compounding occurs semi-annually, so 5*2 = 10 times. Thus, t = 10)

plugging the info into the formula we will get our answer.

[tex]FV=I(1+r)^t\\FV=1000(1+0.04)^{10}\\FV=1000(1.04)^{10}\\FV=1480.24[/tex]

Answer:

C. $1,480

Step-by-step explanation:

Plato

Distributive property 7(2n+3)

Answers

its 14n+21. 7×2n is 14n, and 3×7 is 21

Answer:

[tex]7(2n+3)=14n+21[/tex]

Step-by-step explanation:

[tex]7(2n+3)=(7*2n)+(7*3)\\\\ 7*2n=14n\\ 7*3=21\\ \\ 7(2n+3)=14n+21[/tex]

in the triangles, gk=pn and hg=mp. which statement correctly compares the angles

Answers

Answer:

Angle G is smaller than angle P

Step-by-step explanation:

In this problem we know that

MN > HK

therefore

∠P > ∠G

The measure of angle P is greater than the the measure of angle G

Rewrite

∠G < ∠P

The measure of angle G is smaller than the the measure of angle P

Answer:

Angle G is smaller than angle P

Step-by-step explanation:

A chemical company makes two brands of antifreeze. The first brand is 45% pure antifreeze and the second brand is 70% pure antifreeze. In order to obtain 150 gallons of a mixture that contains 55% pure antifreeze, how many gallons of each brand of antifreeze must be used?
First brand: ____ gallons
Second brand: ___ gallons

Answers

Answer:

First brand(45%): 90 gallons

Second brand(70%): 60 gallons

Step-by-step explanation:

"The first brand is 45% pure antifreeze and the second brand is 70% pure antifreeze. In order to obtain 150 gallons of a mixture that contains 55% pure antifreeze, how many gallons of each brand of antifreeze must be used?

First brand: ____ gallons

Second brand: ___ gallons"

We know that 70 is 15 away from 55, and 45 is 10 away, making this a 10: 15 ratio of 70 to 45 (because the 70 can only counteract the 45 by 10, and the 45 can only counteract the 70 by 15 unless they want to overshoot the 55% average ).

This means that .4*150 is 70% and .6*150 is 45%

This means there is First brand: 90 gallons

Second brand: 60 gallons

Jenny will roll a number cube, numbered 1-6, twice. What is the probability of rolling an odd number, then an even number?

Answers

Answer:

1/2

Step-by-step explanation:

1,3,5: 3/6

2,4,6: 3/6

6/12

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