All Questions +0 150053 Questions

A proportional relationship is represented by the equation 2x=18y. If y=kx, where k is the constant of proportionality, what is the value of k?

Answers could possibly be 1/9, 1/2, 2, 9 (multiple choice) read more ..

Guest 7 hours ago

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13

1

Help please??

Guest 9 hours ago

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19

2

+41

Solve the following system of equations:

For each sample, find the sample proportion. Write it as a percent.

GAMEMASTERX40 10 hours ago

0

16

3

+41

For each sample, find the sample proportion. Write it as a percent. I'm Real Confused.

What integer n has the property that is greater than and is less than .

read more ..

GAMEMASTERX40 10 hours ago

+1

16

2

+499

I am not sure if this is right. Exponential Inequalities.

A polynomial with integer coefficients is of the form You are told that the integer r is a double root of this polynomial. (In other words, the polynomial is divisible by (x - r)^2.) Enter all the possible values of r, separated by commas. read more ..

CalculatorUser 11 hours ago

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13

3

Help

There are four even integers in the top five rows of Pascal's Triangle. How many even integers are in the top 10 rows of the triangle?

Guest 11 hours ago

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14

3

help

The lattice shown is continued for 100 rows. What will be the third number in the 100th row?

Row 1: 1 2 read more ..

Guest May 24, 2019 9:56:16 PM

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17

1

Can I have some help on this question?

x, y, and z are all positive real numbers. x+y+z = 1
prove: x^2/(y+2z) + y^2/(z+2x) + z^2/(z+2y) is greater or equal to 1/3
This has to be proved using the Cauchy inequality.
Any help is appreciated!! read more ..

Guest May 24, 2019 9:55:14 PM

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17

0

+159

Cauchy inequality question, please help asap

hearts123 May 24, 2019 9:41:15 PM

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12

7

Can I have some help on this question?

The first four stellations are represented below. How many dots are in the 20th stellation?

Figure 1: one dot
Figure 2: eight dots read more ..

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Guest May 24, 2019 9:35:08 PM

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15

2

Can I have some help on this question?

Can I have some help on this question?

"The first figure contains 2 dots, the second 6 dots, and the third 12 dots. If the pattern continues, how many dots would the tenth figure contain?"

I know this isn't a math question but I wrote this MLA Research Paper and if there's anyone who thinks they could give it a shot I would be ever thankful.

If you could circle mistakes/improvements and write some short feedback on read more ..

Guest May 24, 2019 9:30:13 PM

+1

23

1

+171

Can Someone Grade This Paper?

What are the values of k such that there is only one x-intercept;
K2x + 2-x = 3

JohnyGotchaApples May 24, 2019 8:15:41 PM

+1

23

1

+69

Exponential functions

What's the matrix that rotates vectors by pi/6 counterclockwise?

Drazil May 24, 2019 3:35:48 PM

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31

1

help appreciated

Rom ●

Guest May 24, 2019

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25

2

HELPPPP

If -5\leq a \leq -1$ and $1 \leq b \leq 3$, what is the least possible value of $\displaystyle\left(\frac{1}{a}+\frac{1}{b}\right)\left(\frac{1}{b}-\frac{1}{a}\right) $? Express your answer as a common fraction.

Solve the equation 3x-1/2y=2

Guest May 24, 2019

0

29

1

+307

Urgent!!!

Find all pairs of real numbers (x,y)$ such that $x + y = 6$ and $x^2 + y^2 = 28$. If you find more than one pair, then list your pairs in order by increasing x$ value, separated by commas. For example, to enter the solutions $(2,4)$ and $(-3,9)$, you would read more ..

Nerd123 May 24, 2019

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17

1

help??

power27 ●

Guest May 24, 2019

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24

1

help (last one)

The two lines shown intersect at the point (a,b). Find ab. Each unit square in the grid represents a distance of 1 .

What is the intersection of the lines given by y=-3x+5$ and $y=2x-6$? Express your answer as an ordered pair.

Guest May 24, 2019

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18

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help plz

The first figure contains 2 dots, the second 6 dots, and the third 12 dots. If the pattern continues, how many dots would the tenth figure contain?

Guest May 24, 2019

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26

2

Help pls

1. Find all integers n for which

Please put your second question on a different post - Melody.

Guest May 24, 2019

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26

1

Help with 2 questions

}}$. Rationalize the denominator: frac{1}{1 + \sqrt{2} - \sqrt{3}}$. The simplified result can be written in the form $\frac{\sqrt{2} + a + \sqrt{b}}{c}$, where $a$, $b$, and $c$, are positive integers. What is $a + b + c$?

Guest May 23, 2019

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16

1

help (last few)

I need help with this question very badly! Hope someone can help.

Guest May 23, 2019

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20

1

Need Help please!

The lines y=5x+3$, $y=-2x-25$ and $y=3x+k$ intersect at the same point. What is the value of $k$?

Guest May 23, 2019

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19

1

help

What is the value of a$ if the lines $2y - 2a = 6x$ and $y + 1 = (a + 6)x$ are parallel?

Guest May 23, 2019

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18

1

helppppp

The least common multiple of two numbers is 3720, and their greatest common divisor is 8. Given that one of the numbers is 120, what is the other number?

Guest May 23, 2019

0

28

1

+399

Help Please

If x + 2y= 4 and xy = -8, what is the value of x^2 + 4y^2?

APatel May 23, 2019

0

20

1

HELPPPPP

how to use randint on this

Guest May 23, 2019

0

24

1

calculator problem

off-topic

Dorothy has a mysterious button on her calculator. When she types in an integer and hits the button,
if the input is odd, the calculator outputs less than triple the input.
if the input is even but not divisible by , the calculator outputs read more ..

Guest May 23, 2019

0

Help urgent need. Need answer today!!!!:)

Guest May 23, 2019

0

26

2

+41

A unit circle is centered at the origin. Last One!

A unit circle is centered at the origin.

If is an angle in standard position and its terminal side passes through the point , find the
exact value of .

GAMEMASTERX40 May 23, 2019

0

30

1

+41

If is an angle in standard position and its terminal side passes through the point , find the exact value of .

The moon phobos orbits mars (mass= 6.42 x 10^23 kg) at a distance of 9.38 x 10^6 m. what is its period of orbit?

GAMEMASTERX40 May 23, 2019

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27

1

Please help with this physics problem

Find the center and radius of the circle with equation (x + 2)2 + (y + 7)2 = 81.

Guest May 23, 2019

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30

1

geometry

Rom ●

Guest May 23, 2019

0

24

1

+31

HELP PLZ URGENT

At time t=0,$ a ball is thrown downward at 24 feet per second from a height of 160 feet above the ground. The equation h = -16t^2 - 24t +160$ describes the height (in feet) of the ball. In how many seconds will the ball hit the ground? Express your answer read more ..

Rom ●

samus May 23, 2019

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22

1

Math help

Rom ●

Guest May 23, 2019

0

25

0

Grinding Machine ratio calculator

A/B * C/D = k If I have 'k' as a given number what formula could i use to circle to all possible alternatives for A,B,C,D(1...200) to get as close as possible to K

off-topic

Guest May 23, 2019

0

22

1

Physics help

The moon umbriel orbits uranus (mass=8.68 x 10^25 kg) at a distance of 2.66 x 10^8 m. What is umbriel orbital period(in hours)?

Yolanda made 4 liters of punch for a birthday party. If she served 3,250 milliliters of punch, how many liters of punch were left

Guest May 23, 2019

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18

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Measurement

how can i use logarithms to base 2?

Guest May 23, 2019

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31

1

scientific calculator online

can someone please help me i dont understand what i got wrong on this quiz

http://prntscr.com/ns7x9p

Guest May 23, 2019

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28

1

trig help

Omi67 ●

Guest May 23, 2019

+1

28

1

+238

math symbol help

what does ~ mean in geometry when referring to triangles?

If P and V are the two distinct solutions to the equation $x^2=x+1$, then what is the value of (\P-Vi)^2

ANotSmartPerson May 23, 2019

+1

32

1

+31

Help (last one)

asinus ●

samus May 23, 2019

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27

1

+31

help plz !!!!!

For what real values of c$ is $x^2 + 16x + c$ the square of a binomial? If you find more than one, then list your values separated by commas.

(Its not (16/2)^2 . or x^2+16x+64

a child on a bicycle weighs 40kg if the bike moves with an acceleration of 0.6m/s to the 2nd power on average how much force is the child applying to the bike through the pedal??

samus May 23, 2019

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24

1

help

The number x satisfies 5x^2 + 4 = 3x + 9. Find the value of $(10x - 3)^2$.

Guest May 23, 2019

0

24

4

+31

help!!!!!

samus May 22, 2019

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26

1

Find a/b when 2 log (a-2b)= log a + log b.

Solve for x:
(4^x+2^x-6)=0

Guest May 22, 2019

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30

1

Solve for x:

If the two roots of the quadratic 4x^2+7x+k$ are $\frac{-7\pm i\sqrt{15}}{8}$, what is $k$?

Guest May 22, 2019

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22

1

help!!

Tim is doing a cakewalk with 11 steps. He takes his first step on step 1 and takes a total of 139 steps, walking in a circle (so that after the 11th step he reaches the first step again). Which step of the cakewalk does he end on?

Guest May 22, 2019

0

21

1

+399

Help Plzzzzz

$, and what is the least possible value of $? Express your answer as a common fraction.

APatel May 22, 2019

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26

1

+31

help

an asteroid has a radius of 110000 m and a surface gravity of 0.0338 m/s^2. what is the mass of the asteroid?

samus May 22, 2019

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28

1

please help with this physics problem

an asteroid has a radius of 110000 m and a surface gravity of 0.0338 m/s^2. what is the mass of the asteroid?

Guest May 22, 2019

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26

3

Physics question

1. The total area of fictional Puget Loud, near Seapple, Washington, can be roughly estimated using a rectangular shape that is 110 miles long and 15 miles wide. In Puget Loud, orcas require approximately 5 mi^2 of territory per animal. Based on this information, read more ..

Guest May 22, 2019

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22

3

HELP!

power27 ●●●

Guest May 22, 2019

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25

3

MOdular arithmetic help pls!

Let $S$ be the set of numbers of the form \[n(n + 1)(n + 2)(n + 3)(n + 4),\] where $n$ is any positive integer. The first few terms of $S$ are \begin{align*} 1 \cdot 2 \cdot 3 \cdot 4 \cdot 5 &= 120, \\ 2 \cdot 3 \cdot 4 \cdot 5 \cdot 6 &= 720, read more ..

heureka ●●●

Guest May 22, 2019

0

43

10

+14

Super HARD expected value questions!

Deleted - go an abuse someone elses site - Melody.

2. Suppose I have a bag with 12 slips of paper in it. Some of the slips have a 2 on them, and the rest have a 7 on them. If the expected value of the number shown read more ..

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jerryjing2006 May 22, 2019

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23

2

Continued Fraction Problem

Find the value of $\[x = 1 + \cfrac{1}{2 + \cfrac{1}{2 + \cfrac{1}{2 + \cfrac{1}{2 + \ddots}}}}.\]$

I was struggling with this problem for a bit, could someone help? Thank you!

Graph the function � = tan �

Guest May 22, 2019

-5

20

1

+41

Graph the function = tan

I suck at these fill in the blanks and I just can't figure this one out. All help is appreciated!
Consider a prism and a pyramid with the same base and height. The volume of the prism is ( ) the volume of the pyramid. The formula for the volume read more ..

GAMEMASTERX40 May 22, 2019

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13

1

One math question...

A 55.0 kg student feels a 2.68x10^-8 N gravitational force from a physics book 0.435 m away. what is the mass of the physics book?

Guest May 22, 2019

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20

2

physics help please

Guest May 22, 2019

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21

1

help please

thank you very much

r(x)=3x^2-6x+5 find the following r=(-.5) please help

I am trying too use PEMDAS but keep getting various answers

Guest May 22, 2019

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18

1

Find the following for r=(-0.5)

power27 ●

Guest May 22, 2019

0

27

1

145435435435435435435

root 3 x root 7

yes please help i need a answer really fast im desperate at this point my grades be lacking help!!!!!
k12.com

Guest May 22, 2019

+1

34

2

+5

Graph the image of the figure after a dilation with a scale factor of 2 centered at (−2, −2) . Use the Polygon tool to graph the quadrilate

help will be appreciated!!

http://prntscr.com/nrq6t5

FTPski May 22, 2019

0

26

1

math help

So I know that the verticle asymptote is at x = -2, the horizontal asymptote at y = 1, and the point discontinuity read more ..

Guest May 22, 2019

0

25

3

Writing the equation for this rational function graphed below?

what is the surface area of a cuboid if it's dimensions are 8*10*2

Guest May 22, 2019

0

15

1

HElp

Rationalize the denominator of \frac{5}{2+\sqrt{6}}$. The answer can be written as $\frac{A\sqrt{B}+C}{D}$, where $A$, $B$, $C$, and $D$ are integers, $D$ is positive, and $B$ is not divisible by the square of any prime. If the greatest common divisor of read more ..

Guest May 22, 2019

0

22

1

+31

Help plz !!!!

How many pairs of positive integers (a,b) satisfy {1}/{a} + {1}/{b}={2}/{17}?

samus May 22, 2019

0

21

2

+31

help plz !

Let a^2=\frac{16}{44}$ and $b^2=\frac{(2+\sqrt{5})^2}{11}$, where $a$ is a negative real number and $b$ is a positive real number. If (a+b)^3 can be expressed in the simplified form $\frac{x\sqrt{y}}{z}$ where $x$, $y$, and $z$ are positive integers, what read more ..

samus May 22, 2019

0

19

1

help

If we express 3x^2 + x - 4$ in the form $a(x - h)^2 + k$, then what is $k$?

Guest May 22, 2019

0

15

1

help quick due tonight

The quadratic 10x^2+100x+1000$ can be written in the form $a(x+b)^2+c$, where $a$, $b$, and $c$ are constants. What is $a+b+c$?

Guest May 22, 2019

0

15

1

help

The number (\sqrt{2}+\sqrt{3})^3$ can be written in the form $a\sqrt{2} + b\sqrt{3} + c\sqrt{6}$, where $a$, $b$, and $c$ are integers. What is $a+b+c$?

Guest May 22, 2019

0

19

1

help

What are the coordinates of the vertex of the parabola?
y=3/4x^2−6x+15

Guest May 22, 2019

0

17

2

What are the coordinates?

There's some number of triangles satisfying
What is the sum of all the possible values of BC? If there are no possible values, answer with 0.

Guest May 22, 2019

0

22

2

Pls ASsist Soon!!!!!

If f(x) = x^2-2x+1 and g(x) = sqrt{2x+1} what is the value of f(g(4)) - g(f(3))?

Guest May 22, 2019

0

14

1

I need Help

A club with five men and six women wish to form a committee. The number of men must be between 1 and 3 (inclusive), and the number of women must be between 2 and 4 (inclusive). How many different committees can be formed?

Guest May 21, 2019

0

27

1

A Combinations problem

I know that if there is no limitations it's 9 choose 4

Guest May 21, 2019

0

22

2

Question from Homework

Guest May 21, 2019

+1

23

1

+5

The measures of the angles of a triangle are in the extended ratio of 4:12:14. What is the measure of the smallest angle?

please help quickly thank you so much thank you.

QueenDes May 21, 2019

0

24

2

AHellelepoeowoe GELP

Find $2^{-1} \pmod{185}$, as a residue modulo 185. (Give an answer between 0 and 184, inclusive.)

Guest May 21, 2019

0

22

2

Help Please!

Let f(x) = 2x-3 and g(x) = x+1. What is the value of g(f(5)-1)?

Guest May 21, 2019

0

18

1

Help

please help I know that the first part is 2 but please need the second part quickly thanks you.

Guest May 21, 2019

0

22

1

Please help

For how many ordered pairs (A,B) where A and B are positive integers is AAA base 7 + BBB base 7 = 666 base 7?

Guest May 21, 2019

0

19

1

Help Please!

For how many ordered pairs $(A,B)$ where $A$ and $B$ are positive integers is $AAA_7+BBB_7=666_7?$

Guest May 21, 2019

0

17

0

Help Please!

off-topic

Guest May 21, 2019

0

20

4

+18

Help with math question!

The question I am having trouble with is this:
For the function which value is closest to the average rate of change from f(a)=16 to f(b)=25?

Simplify (x+1)(2x+3)(3x+4) = (6x^{2}+5)(x-3)$ to the form $0 = Ax^{2}+Bx+C$, where A, B, and C are positive integers with a greatest common divisor of 1. What is A+B+C?

Masterx4020 May 21, 2019

0

19

1

help plz urgent

Guest May 21, 2019

+1

23

1

Write 2 as a percentage and 0.58% as a decimal

Guest May 21, 2019

0

21

1

how do I use the inverse functions of the tan functions?

he equation y = -16t^2 + 80t describes the height (in feet) of a projectile launched from the ground at 80 feet per second. At what $t$ will the projectile reach 36 feet in height for the first time? Express your answer as a decimal rounded to the nearest read more ..

Guest May 21, 2019

0

15

1

help

Simplify (x+1)(2x+3)(3x+4) = (6x^{2}+5)(x-3)$ to the form $0 = Ax^{2}+Bx+C$, where A, B, and C are positive integers with a greatest common divisor of 1. What is A+B+C?

Guest May 21, 2019

0

20

1

help

1. An airplane carrying 500 passengers burns 5 gallons of fuel per mile. What is the fuel consumption rate of the plane per person? gallons per person per mile

Please help because I've been stuck and I can't figure it out. I divided read more ..

Guest May 21, 2019

0

22

3

Help

thank you so much for helping!! Please quick it is due :)

Guest May 21, 2019

0

26

5

Please Help!! Thank you please help quick

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Guest May 21, 2019

0

19

2

I don't get this

Given that f(x)=x^2-2x+5 and g(x)+x+3, what is the value of f(g(5))-g(f(5))?

f(x)=3-√x and g(x)=5x+2x^2, what is f(g(-5))?

Guest May 21, 2019

0

24

3

Function Composition

Find the value of a
so that the system has no solutions.

Guest May 21, 2019

0

21

1

help

Guest May 21, 2019

+1

29

1

+1112

I am supposed to raise to the indicated power but I don't know what that means and it isn't in my math book.

(4ab^5cd^2)^3

SmartMathMan May 21, 2019

+1

25

1

+1112

How do I solve this using the foil method?

(8x^2 - 9) (2x + 4)

http://prntscr.com/nr7nrp

what y equals at every x in the table

SmartMathMan May 21, 2019

0

20

1

math help thank you with picture

Guest May 21, 2019

+1

18

1

+1112

How do I solve this using the foil method?

(5xy^2 + 1) (xy^2 - 4)

How many base-10 integers are exactly 4 digits in their base-3 representation and exactly 2 digits in their base-6 representation?

SmartMathMan May 21, 2019

0

24

1

Help please!

Melody ●

Guest May 21, 2019

-1

24

1

Help Please!

"Modulo $m$ graph paper" consists of a grid of $m^2$ points, representing all pairs of integer residues $(x,y)$ where $0\le x

What is the smallest integer $n$, greater than $1$, such that $n^{-1}\pmod{1320}$ is defined?

Guest May 21, 2019

0

24

1

Help please!

Let and Find the largest possible value of

Guest May 21, 2019

0

14

1

help

The graph shows a probability distribution.
Which probabilities are equal to 0.2?
Select each correct answer.
read more ..

Guest May 21, 2019

0

24

1

+327

two graph continuous random variable practice?

Expand (p - q)^4.
Could you explain how to easily multiply variables like that as well?

PhoenixForever May 21, 2019

0

18

1

Help!

A polynomial with integer coefficients is of the form . Find the number of different possible rational roots of this polynomial.

Guest May 21, 2019

0

31

7

Please help

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Guest May 21, 2019

0

16

1

+327

Help! Continuious random variable problem

The graph shows a probability distribution.What is P(X<3)?

0.125 read more ..

Select Yes or No to state whether each data set is likely to be normally distributed.
Yes or No

the number of popcorn pieces in a bag of small popcorn sold at a given movie theater y/n read more ..

PhoenixForever May 21, 2019

0

27

1

+327

Probability 'the normal distribution' Question

PhoenixForever May 21, 2019

0

21

1

+865

Area of Triangles

AdamTaurus May 21, 2019

-5

19

1

+41

I'm a bit confused on how to do this... Show Work!

For the problem below, use the Pythagorean Identity.

GAMEMASTERX40 May 21, 2019

-5

25

2

+41

For the problem below, use the Pythagorean Identity. Quick I need Help!

The difference between the squares of two even positive integers that are less than 100 apart equals 10!(factorial). What are the two integers? Thank you for any help.

GAMEMASTERX40 May 21, 2019

0

19

1

Number Theory

Solve this equation for

I have a result, but I'm unsure if it's correct. Any help is very appreciated :) read more ..

Guest May 21, 2019

0

30

2

+110

Solving Rydberg Equation

(3y^3 + 6) - ( y^3 + 4y^2 - 3y - 7)

Anthrax May 21, 2019

0

20

4

+1112

How do I solve this subtraction of polynomials problem?

Let f(x)=x+3 and g(x)=3x+5. Find f(g(4))-g(f(4)).

SmartMathMan May 20, 2019

0

23

1

+399

Help

(7x^3 - 5) + (8 - 3y + 2y^3)

APatel May 20, 2019

0

23

2

+1112

How do I add these polynomials?

Find the number of integers that satisfy

SmartMathMan May 20, 2019

-1

25

4

help

Let where is restricted to positive integers. What is the maximum value of ?

Guest May 20, 2019

-1

22

1

help

Find the number of ordered pairs of real numbers such that

Guest May 20, 2019

-1

15

1

help

help

how much percent of a whole normal distribution is 1 standard deviation

Guest May 20, 2019

0

14

2

+1112

How do I solve this. I'm adding polynomials.

x^2 + x^2

hectictar ●●

SmartMathMan May 20, 2019

0

17

2

how much percent of a whole normal distribution is 1 standard deviation

ElectricPavlov ●●

Guest May 20, 2019

+1

18

2

Help

Find all integers n for which n^3 = (n-1)^3+(n-2)^3+(n-3)^3.

Let f(x)=6/−2+2e^−0.3x
What is f(−1) ?

Enter your answer, rounded to the nearest tenth, in the box. read more ..

Guest May 20, 2019

0

18

1

-6

round to the nearest tenth