All Questions

919

+152

Hard Prob

Let return the number of distinct ordered pairs of positive integers such that for each ordered pair, . Note that when , and are distinct. What is the smallest positive integer for which ?

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EvanWei123 Oct 22, 2019

537

Help plz

A ball travels on a parabolic path in which the height (in feet) is given by the expression -16^2 +32t +15, where t is the time after launch. What is the maximum height of the ball, in feet?

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Guest Oct 22, 2019

643

For what real value of b is the expression ( minimized?

For what real value of b is the expression minimized?

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Guest Oct 22, 2019

965

+700

good study habits

I know that the majority of you are really good when it comes to studying, and skill.
Unfortunately though, my study habits are ineffective in a way and they are starting to lower my grades as I am extremely worried...
If it is okay with you read more ..

off-topic

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Nirvana Oct 22, 2019

Oct 21, 2019

1536

+34

A teacher is making her students do the attendance. She has 3 blue ink pens and 9 black ink pens. The put the pen back every time it is used

A teacher is making her students do the attendance. She has 3 blue ink pens and 9 black ink pens. The put the pen back every time it is used. What is the probability that the first three students will consecutively pick a blue ink pen?

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banana Oct 21, 2019

427

Even integers

How many 6-digit EVEN integers between 100,000 and 999,999 sum up to 22? Thanks for any help.

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Guest Oct 21, 2019

780

HELP ASAP!!

A ball travels on a parabolic path in which the height (in feet) is given by the expression -25t^2+ 75t +24, where t is the time after launch. At what time is the height of the ball at its maximum?

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Guest Oct 21, 2019

944

Cumulative Practice Problems

Please help me answer problems 3 and 4 for I am confused about why the shapes are similar. Thank You!

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Guest Oct 21, 2019

936

???

what integer divided by six, less eighteen, is negative twenty two?

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Guest Oct 21, 2019

731

Quadratic Optimization.

A ball travels on a parabolic path in which the height (in feet) is given by the expression -25t^2+ 75t +24, where t is the time after launch. At what time is the height of the ball at its maximum?

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Guest Oct 21, 2019

699

mathis

sqrt(75)-sqrt(12)-sqrt(27)

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Guest Oct 21, 2019

789

Help

A linear function ff models a relationship in which the dependent variable decreases 4 units for every 2 units the independent variable increases. The value of the function at 00 is −2−2.
Move

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Guest Oct 21, 2019

994

+1982

Write the expression for 'eight times the sum of the square of a number and three.'

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macabresubwoofer Oct 21, 2019

582

answer

what is $2000 at 7% interested for 2 years. compounded quarterly.

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Guest Oct 21, 2019

638

Help in Quadratic Optimization.

What is the maximum value of the expression -5r^2 + 40r - 12 for real r ?

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Guest Oct 21, 2019

1844

help

A domino is a rectangular tile composed of two squares. An integer is represented on both squares, and each integer 0-9 is paired with every integer 0-9 exactly once to form a complete set. A is a domino that has the same integer on both of its squares. read more ..

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Guest Oct 21, 2019

709

+29

Need help with this coordinate question.

Hi there everyone! I'm stuck on question 2c (find the exact x coordinate of E). Please help, thanks.

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Umbrella Oct 21, 2019

409

Word Problems

Hi! I love this calculator its very helpful to me. But I would like to know if you can do word problems or what I should use for a word problem.

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Guest Oct 21, 2019

441

Question about the the quotient rule for differential calculus

Hello everyone, could someone explain to me where I am wrong because I can't find the mistake.
The quotient rule I am using is as follows
with my result is
However, the CAS calculators result is read more ..

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Guest Oct 21, 2019

385

Help!! Multiplying Matrices .-.

Help plz! This is super confusing to me. Thanks~

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Guest Oct 21, 2019

672

Research Maths

What maths do I need to know to understand how to read scientific research? I know it's some probability and statistics but what and where on the web can I find this to teach myself? I have a relatively good understanding of mathematics in general. read more ..

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Guest Oct 21, 2019

1375

+1982

A White Heron (excerpt)

A White Heron (excerpt)
Sarah Orne Jewett

1The woods were already filled with shadows one June evening, just before eight o'clock, though a bright sunset still glimmered faintly among the trunks of the trees. A little read more ..

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macabresubwoofer Oct 21, 2019

907

+1982

W. E. B. Du Bois Jon Reese

W. E. B. Du Bois
Jon Reese

1 An outstanding critic, editor, scholar, author, and civil rights leader, W. E. B. Du Bois is certainly among the most influential blacks of the twentieth century. Born in Great Barrington, Massachusetts read more ..

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macabresubwoofer Oct 21, 2019

446

Confusion about d/dx(e^x)

Hello, in my Math Class i was taught that d/dx(e^x) = e^x. This calculator is adding *ln(e) why would that be?

Also d/dax(e^(a*x)) = e^(a*x)*ln(e) but d/dx(e^(3*x))= 3e^(3x)*ln(e)
So shouldn´t d/dax(...) be a*e^(a*x)*ln(e) read more ..

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Guest Oct 21, 2019

All Questions ⁺⁰230606 Questions

Hard Prob

Help plz

For what real value of b is the expression ( minimized?

good study habits

A teacher is making her students do the attendance. She has 3 blue ink pens and 9 black ink pens. The put the pen back every time it is used

Even integers

HELP ASAP!!

Cumulative Practice Problems

???

Quadratic Optimization.

mathis

Help

Write the expression for 'eight times the sum of the square of a number and three.'

answer

Help in Quadratic Optimization.

help

Need help with this coordinate question.

Word Problems

Question about the the quotient rule for differential calculus

Help!! Multiplying Matrices .-.

Research Maths

A White Heron (excerpt)

W. E. B. Du Bois Jon Reese

Confusion about d/dx(e^x)

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