All Questions

418

pls help asap

If two lines $l$ and $m$ have equations $y = -x + 6$, and $y = -4x + 6$, what is the probability that a point randomly selected in the 1st quadrant and below $l$ will fall between $l$ and $m$? Express your answer as a decimal to the nearest hundredth. read more ..

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Guest Jul 31, 2020

615

+49

PLEASE HELP!!!!!

Suppose that $f$ is an invertible function from $(-\infty,\infty)$ to $(-\infty,\infty)$. If $f(f(x))=x$, find $f(x)-f^{-1}(x)$.

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GrOoVyCoW Jul 31, 2020

576

percent question

Find the percent increase from 50 to 77. I don't understand percents.

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Guest Jul 31, 2020

768

Find the value of $c$ such that the three points $(5,5),$ $(-3,1)$, and $(6,c)$ lie on the same line. Note: Three points are on the same li

Find the value of such that the three points , and lie on the same line.
Note: Three points are on the same line if the slope of the line through any two points is always the same

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Guest Jul 31, 2020

571

Please help asap !!

Fred the ant is on the real number line, and Fred is trying to get to the point 0
If Fred is at 1 then on the next step, Fred moves to either 0 or 2 with equal probability. If Fred is at 2 then on the next step, Fred always moves to 1
Let e^1 be expected read more ..

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Guest Jul 31, 2020

415

Quadratic Inequalities

What is the value of $b+c$ if $x^2+bx+c>0$ only when $x\in (-\infty, -2)\cup(3,\infty)$?

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Guest Jul 31, 2020

549

please help

It takes 20 minutes for 5people to paint 5 walls. How many minutes does it take 9 people to paint 9walls?

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Guest Jul 31, 2020

615

how do you solve this

sandra is 18 years older than jason. in three years she will be three times as old as jason will be then. how old was sandra 2 years ago?

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Guest Jul 31, 2020

514

HELP ASAP!!

Let $x = \sqrt{\frac{\sqrt{53}}{2} + \frac{3}{2}}.$ There exist unique positive integers $a,$ $b,$ $c$ such that \[x^{100} = 2x^{98} + 14x^{96} + 11x^{94} - x^{50} + ax^{46} + bx^{44} + cx^{40}.\]Find $a + b + c.$

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Guest Jul 31, 2020

551

+12

Interest Rates

Angela has deposited $8,000 into an account that pays 6% interest compounded annually.
Bob has deposited $10,000 into an account that pays 7% simple annual interest.
In 20 years Angela and Bob compare their respective balances. To read more ..

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LoryLullic Jul 31, 2020

484

+12

exponent powers

If is a real number such that , find . Thank you!

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LoryLullic Jul 31, 2020

860

Help, idk how to do this

What is the least positive integer which when divided by 5 gives a remainder of 4, when divided by 6 gives a remainder of 5, when divided by 7 gives a remainder of 6, when divided by 8 gives a remainder of 7, when divided by 9 gives a remainder of 8, and read more ..

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Guest Jul 31, 2020

583

Degree display

How do you visualize degrees in this forum? I am using Unicode characters from here https://exoticfonts.com/small-text/
like 6³¹¹³¹. But they are not displayed on all devices

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SteveXA Jul 31, 2020

528

coordinates

In the graph, lines f and g intersect at P(6,6). What is the area, in square units, of the shaded region?

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Guest Jul 31, 2020

540

number theory

Find the units digit of the number

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Guest Jul 31, 2020

648

please help

Simplify

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Guest Jul 31, 2020

994

help with counting

A passcode can have 5 or 6 digits. Digits can be repeated and leading 0s are allowed. So, 1234 would be a 4 digit code that is different from 01234, which is a 5 digit code. How many different passcodes are possible

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Guest Jul 31, 2020

1214

+107

Let P=(a,b) be the point of intersection of the line y=2x-10 and the line through (7,8) and (9,0). Compute a+b.

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xplosions Jul 31, 2020

829

+48

How can data or a graph be misleading?

How can data or a graph be misleading?
a) having bias
b) not using outliers
c) using correct scales read more ..

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ElitBabbi Jul 31, 2020

662

+48

Please help

Please help me

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ElitBabbi Jul 31, 2020

709

+224

Really tough geometry problem, can someone please help?

The vertices of a triangle are the points of intersection of the line y = -x-1, the line x=2, and Find an equation of the circle passing through all three vertices.
read more ..

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envoy Jul 31, 2020

665

+79

Roots

I need help with this... A clue, please?

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TheLovely1 Jul 31, 2020

All Questions ⁺⁰237806 Questions

pls help asap

PLEASE HELP!!!!!

percent question

Find the value of $c$ such that the three points $(5,5),$ $(-3,1)$, and $(6,c)$ lie on the same line. Note: Three points are on the same li

Please help asap !!

Quadratic Inequalities

please help

how do you solve this

HELP ASAP!!

Interest Rates

exponent powers

Help, idk how to do this

Degree display

coordinates

number theory

please help

help with counting

Let P=(a,b) be the point of intersection of the line y=2x-10 and the line through (7,8) and (9,0). Compute a+b.

How can data or a graph be misleading?

Please help

Really tough geometry problem, can someone please help?

Roots

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