All Questions

542

+193

Functional Operations

If $\&x$ is defined as $\&x = x + 5$ and $\#x$ is defined as $\#x = x^2$, what is the value of $\#(\&4)$?

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clairepow Feb 14, 2021

401

counting

Suppose that I have $6$ different books, 2 of which are math books. In how many ways can I stack my 6 books on a shelf if I do not want the math books to be at the ends?

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Guest Feb 14, 2021

399

please help!

What is the value of x + y? I've tried to figure out how to solve this, but I'm not very good at it, any help would be amazing!!

read more ..

Logarhythm ●

Guest Feb 14, 2021

652

TRIG MATH HELP PLZZZ

On a windy day you are flying a kite and notice that you have released 200 m of string. The height of the kite is 40 m in the air. Determine the angle of elevation the kite makes with the ground.

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Lidarose Feb 14, 2021

618

+25

Help! - Number Theory

When the fraction is expressed in base is it terminating or repeating?

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Doggo Feb 14, 2021

357

HELPPP NEW ALGEBRA QUESTION

Express (4-5i) (-5+5i) in the form a+ bi, where a and b are integers and i^2 = -1

Plz help thx

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Guest Feb 14, 2021

1558

The legs of a right triangle measure 5 inches and 9 inches.

The legs of a right triangle measure 5 inches and 9 inches.
What is the measure of the smallest angle of the triangle?
Enter your answer, rounded to the nearest tenth of a degree, in the box.

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Guest Feb 14, 2021

921

In right ABC, the right angle is at C, m∠A=30∘, and AC=7√2 units.

In right △ABC, the right angle is at C, m∠A=30∘, and AC=7√2 units.
What is the perimeter of △ABC?

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Guest Feb 14, 2021

362

hlp hlp

If an object is dropped from a height of 198 feet, the function h(t)=-16t^2 +198 gives the height of the object after t seconds. When will the object hit the ground?

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Guest Feb 14, 2021

697

+16

Please Help Soon. I Do Not Know How to Do This Problem.

A Penteria is a special (fictional) kind of bacteria such that, regardless of the original population in a collection, the population increases by 5 every minute. Additionally, at the end of every hour, all but the initial ones die. If 137 Penteria are read more ..

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hmaser Feb 14, 2021

627

help algebra

Thomas, a waiter at a local restaurant, is paid $\$4$ an hour plus tips. His friend Marie works at a local bookstore for $\$12$ an hour. Marie and Thomas worked the same number of hours. If Thomas made $\$120$ in tips and both made the same amount of money, read more ..

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Guest Feb 14, 2021

451

+16

Please Help ASAP!

In base , there are exactly one hundred three-digit numbers whose digits are all distinct. (That's "one hundred" in the ordinary sense, .)
What is ?

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hmaser Feb 14, 2021

1162

Find the coefficient of x2in the expansion of (1 + 2x)^5(2-x)^6

I've never done this kind of problem before and my teacher's never taught it, she expects us to have learned it last year even though we didn't. Can I get a full explanation on how to do it? read more ..

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Guest Feb 14, 2021

555

+193

Functional Operations

Let $a\star b = \dfrac{\sqrt{a+b}}{\sqrt{a-b}}$. If $ x \star 24 = 7$, find $x$.

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clairepow Feb 14, 2021

537

graphing

Given that the point (8,8) is on the graph of $y= 4 f\left( 2x\right)$, there is one point that must be on the graph of $y=f(x)$. What is the sum of coordinates of that point?

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Guest Feb 14, 2021

630

+193

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

Find the value of $a$ so that the system has no solutions.
\begin{align*}
y &= 11x+14 \\
2y-4 &= ax
\end{align*}

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clairepow Feb 14, 2021

Feb 13, 2021

431

help with counting

In a certain Algebra 2 class of 30 students, 7 of them play basketball and 11 of themplay baseball. There are 5 students who play both sports. What is the probability that a student chosen randomly from the class plays basketball or baseball?

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Guest Feb 13, 2021

560

ratio problem

Ms. Salazar's rice mixture consists of seven parts of white rice to three parts ofwild rice. If she makes 30 cups of the mixture, how many cups of white rice will she use? How many cups of wild rice will she use?

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Guest Feb 13, 2021

397

confusing word problem

On a rainy day, every kid at Margo's school brings a raincoat, an umbrella, or both. And 18% of the kids bring both. The total number of umbrellas brought is twice the total number of raincoats.
What percent of the kids bring only an umbrella? read more ..

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Guest Feb 13, 2021

576

polygons

A square tile, a regular hexagon tile, an equilateral triangle tile, and a regular n-sided polygon tile share a common vertex. There are no gaps or overlaps between the tiles. What is n?

textot ●

Guest Feb 13, 2021

332

counting

1. How many ways can you distribute 4 different balls among 4 different boxes, if at least one box must be empty?

2. How many ways can you distribute 4 identical balls among 4 identical boxes, if at least one box must be empty? read more ..

Guest Feb 13, 2021

337

system

Find all pairs (x,y) of real numbers such that x + y = 10 and x^2 + y^2 = 56 + 2xy.

Guest Feb 13, 2021

363

system

Find the ordered pair (s, t) that satisfies the system
s/2 - 3t= -1
3t + 2s= 3

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Guest Feb 13, 2021

461

piecewise function

Let
f(x) = x+ 3 if x > 3
f(x) = x - 6 if -3 <= x <= 3
f(x) = 3x + b if x < -3. read more ..

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Guest Feb 13, 2021

507

help with rectangle

In rectangle ABCD, shown here, CE is perpendicular to BD . If BC = sqrt(3) and DC = 2, what is CE?

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Guest Feb 13, 2021

All Questions ⁺⁰237635 Questions

Functional Operations

counting

please help!

TRIG MATH HELP PLZZZ

Help! - Number Theory

HELPPP NEW ALGEBRA QUESTION

The legs of a right triangle measure 5 inches and 9 inches.

In right ABC, the right angle is at C, m∠A=30∘, and AC=7√2 units.

hlp hlp

Please Help Soon. I Do Not Know How to Do This Problem.

help algebra

Please Help ASAP!

Find the coefficient of x2in the expansion of (1 + 2x)^5(2-x)^6

Functional Operations

graphing

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

help with counting

ratio problem

confusing word problem

polygons

counting

system

system

piecewise function

help with rectangle

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