All Questions ⁺⁰230352 Questions

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A Few Probability Questions

For a certain group of students, the probability of randomly selecting a student who takes an art class is 41%, the probability of randomly selecting a student who takes a music class is 29%, and the probability of randomly selecting a student who takes read more ..

RedBlue Dec 21, 2017

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3771

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+83

A bag contains different colored beads.

A bag contains different colored beads. The probability of drawing two black beads from the bag without replacement is 3/35 , and the probability of drawing one black bead is 3/10 .
What is the probability of drawing a second black bead, given that read more ..

CPhill ●●●●●●●●●●●●●

RedBlue Dec 21, 2017

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2270

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Probability Number cube

What is the probability of rolling a number greater than 4 on a number cube and then spinning an even number on a spinner divided into 12 equal sectors numbered 1 through 12?

(Answer with a simplified fraction please.)

RedBlue Dec 21, 2017

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928

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+83

Probability Dependence

Independent or Not Independent: Selecting a red apple from a bag of apples, eating it, and then selecting a green apple from the same bag.

Independent or Not Independent: Rolling a 6 on a number cube and then rolling another 6 on read more ..

RedBlue Dec 21, 2017

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2128

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1. Draw the image of under the dilation with scale factor 2 and center of dilation (0, 0). Label the image . ABC

this is the picture

Guest Dec 21, 2017

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895

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+956

Sound Intensity?

What is the sound intensity of a jackhammer that is rated at 90 dB?

I get 10^9 = 1000000000
read more ..

Julius Dec 21, 2017

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1110

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If 12x=5, what is 32x?

If 12x=5, what is 32x?

Guest Dec 21, 2017

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@CPhill

If you do this could you please put and explain every step and how you did it??? Thanks!!!

find each quotient and write it in rectangular form
read more ..

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dom6547 Dec 21, 2017

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1755

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A geometric sequence is defined by the equation an = (2)5 − 2n.

A geometric sequence is defined by the equation an = (2)5 − 2n.

Part A: What are the first three terms of the sequence?
Part B: What is the value of r? read more ..

ElectricPavlov ●

Guest Dec 21, 2017

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3254

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Grade 10 Trigonometry

the angle of elevation from the top of a 16m building to the top of a second building is 48 degrees,
The buildings are 30m apart. What is the height of the taller building?

Guest Dec 21, 2017

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1925

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How many multiples of 7 are there between 200 and 1,200?

How many multiples of 7 are there between 200 and 1,200?

Guest Dec 21, 2017

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2300

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Suppose that you drop a ball from a window 45 meters above the ground. The ball bounces to 65% of its previous height with each bounce. What

Suppose that you drop a ball from a window 45 meters above the ground. The ball bounces to 65% of its previous height with each bounce. What is the total number of meters (rounded to the nearest tenth) the ball travels between the time it is dropped and read more ..

Guest Dec 21, 2017

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+912

Simplify. 5i−54−−−−√

Simplify.
5i−54−−−−√

read more ..

AngelRay Dec 21, 2017

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+912

1. Simplify 0.4i − i.

1. Simplify 0.4i − i.

Enter your answer in the box.
read more ..

AngelRay Dec 21, 2017

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3207

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+912

Which answer is equal to i39 ?

Which answer is equal to i39 ?

−i

AngelRay Dec 21, 2017

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1775

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+912

Which expression is equal to 2−32−−−−√ ?

Which expression is equal to 2−32−−−−√ ?

AngelRay Dec 21, 2017

Dec 20, 2017

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1907

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help

In a certain pentagon, the interior angles are a degrees, b degrees, c degrees, d degrees, and e degrees, where a,b,c,d are integers strictly less than 180. ("Strictly less than 180" means they are "less read more ..

hectictar ●●

SmartMathMan Dec 20, 2017

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Simple Proofs (Hopefully)

Can someone please prove the properties of exponents? Doing this will allow me to understand it better. Thanks.

TheXSquaredFactor ●●●

TheXSquaredFactor Dec 20, 2017

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help plz

Turtles can live a long time. This stem-and-leaf plot shows the ages (in years) of the turtles in the reptile house of the Kalamazoo Zoo:

read more ..

SmartMathMan Dec 20, 2017

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help plz

For the data whose frequency histogram is shown, by how many days is the mean number of days missed per student greater than the median number of days missed per student for the 15 students? Express your answer as a common fraction.
read more ..

SmartMathMan Dec 20, 2017

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762

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HISTORY

Which statement about the Korean War is true?

A. President Truman never asked Congress for a formal declaration of war.

B. South Korea surrendered after communist China's army joined the conflict. read more ..

Guest Dec 20, 2017

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928

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+13

what is the original price?

john got a $6 discount off of a pair of tennis shoes. this was 12% off of the original price. what was the original price?

hectictar ●●

GrimmReaper Dec 20, 2017

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2586

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help

500 people are asked to name their favorite color. The results of this survey are shown in the pie chart below:

Each read more ..

SmartMathMan Dec 20, 2017

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Let $f(x)=ax^2+bx+a$, where $a$ and $b$ are constants and $a\ne 0$. If one of the roots of the equation $f(x)=0$ is $x=4$, what is the other

Let $f(x)=ax^2+bx+a$, where $a$ and $b$ are constants and $a\ne 0$. If one of the roots of the equation $f(x)=0$ is $x=4$, what is the other root? Explain your answer.

michaelcai Dec 20, 2017

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