All Questions

281

Graphing

Given that the point (8,8) is on the graph of y= f(sqrt(x)/4), there is one point that must be on the graph of y=f(x). What is the sum of coordinates of that point?

Guest Aug 4, 2021

482

stuck on this question, pls help, thx

What is the smallest base-10 integer that can be represented as in one base and in another base, where a and b are any bases larger than 2?

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Guest Aug 4, 2021

354

Operations

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

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Guest Aug 4, 2021

427

help algebra

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 reach 100 feet?

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Guest Aug 4, 2021

314

help

When five standard six-sided dice are rolled sequentially there are 6^5=7776 possible outcomes. For how many outcomes is the sum of the five rolled numbers exactly 27?

Guest Aug 4, 2021

750

Help

Define $\{x\} = x-\lfloor x \rfloor$. That is to say, $\{x\}$ is the "fractional part" of $x$. For example, if you were to expand a positive number $x$ as a decimal, $\{x\}$ is the stuff after the decimal point. For example $\left\{\frac{3}{2}\right\} = read more ..

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Guest Aug 4, 2021

399

Help with algebra 2

What is the smallest positive integer $n$ such that $\sqrt{n} - \sqrt{n-1} < 0.01?$

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Guest Aug 4, 2021

615

Find all roots of the polynomial... (help please!!!)

1) Find all roots of the polynomial

2) Find all roots of the polynomial
read more ..

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Guest Aug 4, 2021

603

Question:

For positive $a,b,c$ such that $\frac{a}{2}+b+2c=3$, find the maximum of $\min\left\{ \frac{1}{2}ab, ac, 2bc \right\}.$

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Guest Aug 4, 2021

388

help geo

In triangle ABC, points P and Q lie on the side BC. It is given that BP = 1, PQ = 3, and QC = 1. The line passing through P and parallel to AB intersects AB in K and the line passing through Q and parallel to AB intersects AC in L. Show that KL || BC by read more ..

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Guest Aug 4, 2021

413

Complex Numbers

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

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Guest Aug 4, 2021

403

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 next to each other?

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Guest Aug 4, 2021

533

help pls

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Guest Aug 4, 2021

429

I am stuck on this question, all help appreciated.

The binary number is equal to what number in base eight?

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Guest Aug 4, 2021

498

Operation

The operation * is defined for non-zero a and b as follows: a * b = 1/a^2 + 1/b^2. If a+b = 13 and ab = 25, what is the value of a*b? Express your answer as a common fraction.

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Guest Aug 4, 2021

412

Piecewise function

Let
f(x) = 2x + 1if x < -3
f(x) = 8 + 4x if x >= -3
read more ..

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Guest Aug 4, 2021

466

Percent

There were 30 cans of soda in the fridge. 60% were Coke and the rest were Pepsi. Noah drank a few cans of Coke and now 75% of the soda cans in the fridge are Pepsi. How many cans of Coke did Noah drink?

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Guest Aug 4, 2021

452

algebra

What is the positive solution to the equation x = 1/(2 + 1/(x + 2)) ?

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Guest Aug 4, 2021

404

quadratic

Suppose that a is a nonzero constant for which the equation ax^2 + 20x + 17 = 0 has only one solution. Find this solution.

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Guest Aug 4, 2021

423

sum

What is the units digit of the sum of all positive multiples of 6 smaller than 600?

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Guest Aug 4, 2021

438

need help

If each dimension of a rectangle decreases by 1, its area will decrease from 2017 to 1917. What will be the area of the rectangle if each of its dimensions increases by 1?

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Guest Aug 4, 2021

-3

482

-37

Sorry to bother, another question.

If $$z = \frac{ \left\{ \sqrt{3} \right\}^2 - 2 \left\{ \sqrt{2} \right\}^2 }{ \left\{ \sqrt{3} \right\} - 2 \left\{ \sqrt{2} \right\} }$$ find $\lfloor z \rfloor$.

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vghcjcfjgj Aug 4, 2021

271

help geometry

In an isosceles △ABC (AC = BC) its incircle touches the side BC at point T. Given AC = 4 and AT = 3. Find the length of AB.

Guest Aug 4, 2021

All Questions ⁺⁰237720 Questions

Graphing

stuck on this question, pls help, thx

Operations

help algebra

help

Help

Help with algebra 2

Find all roots of the polynomial... (help please!!!)

Question:

help geo

Complex Numbers

Counting

help pls

I am stuck on this question, all help appreciated.

Operation

Piecewise function

Percent

algebra

quadratic

sum

need help

Sorry to bother, another question.

help geometry

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