All Questions ⁺⁰237722 Questions

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Can someone help EDC is similar to ABC. Solve for x.

Can someone help △EDC is similar to △ABC. Solve for x.

read more ..

Guest Sep 9, 2018

+1

985

1

+92

Geometry Question

Triangle ABC has side AB extended in the direction of B to E. m∠CAB = 15x - 92x - 25) and m∠CBE = 125°. Find all possible values of x.

FreezingTNT Sep 9, 2018

0

609

1

help

Joe wants to find all the four-letter words that begin and end with the same letter. How many combinations of letters satisfy this property?

Guest Sep 9, 2018

+1

1556

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+212

Question

Let p be a prime number between 40 and 60. What is the probability that p + 12 is also a prime number? Express your answer as a common fraction.

ColdplayMX Sep 9, 2018

0

956

1

+78

Please help me with this question!

Please help me solve/compute this question!

Please compute:
(-8)^{-2/3} read more ..

Web2.0CalcUser123 Sep 9, 2018

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509

1

Please help

Diameter: 22 m
Slant height: 15 m
_____m2
read more ..

Guest Sep 9, 2018

0

928

2

Sig Fig Math

Would 1000-168.864 equal 1000 or 831?

Guest Sep 9, 2018

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1291

3

Please help

Find the greatest $a$ such that $\frac{7\sqrt{(2a)^2+(1)^2}-4a^2-1}{\sqrt{1+4a^2}+3}=2$.

Guest Sep 9, 2018

0

920

2

+1246

Help!

Let . If , find the value of g.

Lightning Sep 9, 2018

0

1011

2

+1246

Help!

Given find x+y+z.

Lightning Sep 9, 2018

0

975

3

+108

huh i would like some help

An equilateral triangle has sides of length 2 units. A second equilateral triangle is formed having sides that are of the length of the sides of the first triangle. A third equilateral triangle is formed having sides that are of the length of the sides read more ..

mathbum Sep 9, 2018

-1

1647

2

Help please!!!!

Mia has a certain amount of money. If she buys 4 pens and 1 pencil, she will have $5 left over. If she buys 2 pens and 2 pencils, she will have $3 left over. If Edward arrives with the same amount of money as Mia, together they can buy 7 pens and 4 pencils read more ..

Guest Sep 9, 2018

0

2612

1

+296

John has 12 marbles of different colors, including one red, one green, and one blue marble.

John has 12 marbles of different colors, including one red, one green, and one blue marble. In how many ways can he choose 4 marbles, if exactly one of the chosen marbles is red, green, or blue?

Darkside Sep 9, 2018

0

3453

1

+296

The Smith family has 4 sons and 3 daughters.

The Smith family has 4 sons and 3 daughters. In how many ways can they be seated in a row of 7 chairs such that at least 2 boys are next to each other?

Darkside Sep 9, 2018

-1

2101

1

+296

Without looking at the labels, Adrien placed four CDs in four cases.

Without looking at the labels, Adrien placed four CDs in four cases. What is the probability that exactly two of the CDs are in the wrong cases? Express your answer as a common fraction.

Darkside Sep 9, 2018

0

1213

1

+189

help

Square ABCD has area 200. Point E lies on side BC. Points F and G are the midpoint of AE and DE, respectively. Given that quadrilateral BEGF has area 34, what is the area of triangle GCD?

Mathgenius Sep 9, 2018

+1

957

1

+296

Three couples go to the movie theater.....her partner?

Three couples go to the movie theater. They want to seat people together for maximum enjoyment, but instead they randomly file into a row with six seats. What is the probability that they sit in a socially optimal configuration, in which each person is read more ..

Darkside Sep 9, 2018

+2

1036

5

+394

3-D Figures - PLEASE ANSWER ASAP

It is known that a cube is inscribed in a sphere. If the volume of the cube is 30, what is the volume of the sphere?

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hellospeedmind Sep 9, 2018

+1

1003

1

+296

Ten people, including Fred, are in the Jazz Club.

Ten people, including Fred, are in the Jazz Club. They decide to form a 3-person steering committee.
How many possible committees can be formed that do not include Fred?

Darkside Sep 9, 2018

0

2854

1

+296

Alex has 5 pieces of paper, each with a different math problem.

Alex has 5 pieces of paper, each with a different math problem. In how many ways can he give these problems to his 10 friends (he can give each friend more than one problem)?

Darkside Sep 9, 2018

+1

1241

2

+92

Geometry Question

AB and CD meet at point E. m∠AEC = 18 + 5x. Find m∠BEC, m∠BED, and ∠AED in terms of x.

FreezingTNT Sep 9, 2018

0

1450

1

Help?

Eight hot dogs and seven hot dog rolls cost $13.60 . Seven hot dogs and eight hot dog rolls cost $13.40. How much, in cents, is the positive difference of the costs of a hot dog and a hot dog roll?

Guest Sep 9, 2018

-1

647

1

Help on binary operations, please

"On the set of ℝ suppose operation * is defined by a * b = 1 + ab. Is * a binary operation?"

This question is confusing. I get to see addition right there, yet the variables a and b are multiplied. I don't know what operation read more ..

Guest Sep 9, 2018

-1

680

1

+3

Complete the factoring.

vivians Sep 9, 2018

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