All Questions

0

501

1

help

Find the number of distinct positive divisors of excluding 1 and .

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Guest Jan 1, 2019

0

765

3

+14

Trig Math Questions

1) Solve the following equation, where theta is in the reals.
4cos(2theta)+3=0

read more ..

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Comet554 Dec 31, 2018

+1

1656

1

Please help

Michael has never taken a foreign language class, but is doing a story on them for the school newspaper. The school offers French and Spanish. Michael has a list of all 25 kids in the school enrolled in at least one foreign language class. He also knows read more ..

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Guest Dec 31, 2018

+2

834

2

Only 100 of base b, what's b?

There are exactly $100$ three-digit base $b$ numbers. What is $b$?

read more ..

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Guest Dec 31, 2018

0

371

0

Experimental studies of a specific decomposition of A in a batch reactor using

Experimental studies of a specific decomposition of A in a batch reactor using pressure units show exactly the same rate at two different temperatures: at 400 K -rA = 2.3 pi where at 500 K -rA = 2.3pi PA = [atml (a) Evaluate the activation using these units read more ..

Guest Dec 31, 2018

+1

697

1

+14

Math Trig Question

P is the point of intersection of the unit circle and the line segment joining the origin and the point (3,-2). Find the coordinates for P.

Could someone help me out with this question with work shown, please?

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Comet554 Dec 31, 2018

+1

618

1

+14

Trig Math Question

If sec (theta)= -3 and tan (theta) > zero, what's the value of sin (theta)

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Comet554 Dec 31, 2018

0

1097

1

help

How many ordered pairs, (x,y), of positive integers satisfy the equation xy=144?

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Guest Dec 31, 2018

0

378

1

help

How many integers are there such that

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Guest Dec 31, 2018

+1

1948

1

+55

Need help checking one of my answers.

How much heat energy is associated with the reaction of 135 g of aluminum metal with excess hydrochloric acid?

The chemical equation is 2Al + 6HCl = 2AlCl3 + 3H2
read more ..

ElectricPavlov ●

Cent0rea88 Dec 31, 2018

0

703

2

What is the probability that Fatima gets fewer heads than tails if she flips 10 coins?

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Guest Dec 31, 2018

0

1798

1

A regular dodecahedron is a convex polyhedron with 12 regular pentagonal faces and 20 vertices. If two distinct vertices are chosen at rando

A regular dodecahedron is a convex polyhedron with 12 regular pentagonal faces and 20 vertices. If two distinct vertices are chosen at random, what is the probability that the line connecting them lies inside the dodecahedron?

Alan ●

Guest Dec 31, 2018

0

3982

6

Three cards are chosen at random from a standard 52-card deck. What is the probability that they are not all the same color?

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Guest Dec 31, 2018

0

395

1

help

Given that a particular positive integer is a four-digit palindrome, what is the probability that it is a multiple of 99?Express your answer as a common fraction.

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Guest Dec 31, 2018

0

549

1

Mr. Jones has 6 children. Assuming that the gender of each child is determined independently and with equal likelihood of male and female, w

Mr. Jones has 6 children. Assuming that the gender of each child is determined independently and with equal likelihood of male and female, what is the probability that Mr. Jones has more sons than daughters or more daughters than sons?

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Guest Dec 31, 2018

+1

659

3

help

What are the sum and product of the roots in 3x^2-4x-7

tertre ●●●

Guest Dec 31, 2018

0

1736

1

$n$ coins are simultaneously flipped. The probability that at most one of them shows tails is $\frac{3}{16}$. Find $n$.

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Guest Dec 31, 2018

0

815

1

number theory

What is the smallest positive four-digit number divisible by 9 which has two even and two odd digits?

Rom ●

Guest Dec 31, 2018

0

630

3

+845

Parabola translation

After graphing the C1 and playing around on desmos i figured out a= 3 read more ..

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YEEEEEET Dec 30, 2018

All Questions ⁺⁰230833 Questions

help

Trig Math Questions

Please help

Only 100 of base b, what's b?

Experimental studies of a specific decomposition of A in a batch reactor using

Math Trig Question

Trig Math Question

help

help

Need help checking one of my answers.

What is the probability that Fatima gets fewer heads than tails if she flips 10 coins?

A regular dodecahedron is a convex polyhedron with 12 regular pentagonal faces and 20 vertices. If two distinct vertices are chosen at rando

Three cards are chosen at random from a standard 52-card deck. What is the probability that they are not all the same color?

help

Mr. Jones has 6 children. Assuming that the gender of each child is determined independently and with equal likelihood of male and female, w

help

$n$ coins are simultaneously flipped. The probability that at most one of them shows tails is $\frac{3}{16}$. Find $n$.

number theory

Parabola translation

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