All Questions

453

Math

What is bigger, 6:7 or 4:5 (ratios)

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Guest May 22, 2021

398

algebra

Let x and y be real numbers such that 2(x^2 + y^2) = x + y + 8. Find the maximum value of x - y.

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Guest May 22, 2021

513

+61

Could someone confirm please?

If a fair coin is flipped 4 times what is the possibility of landing four heads in a row?

I think the answer is 1/16, but I'm not sure could someone please confirm?

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smonke May 22, 2021

495

+61

Please help!!

Is it 5/13, could someone confirm please?

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smonke May 22, 2021

319

Can someone help me to solve these type of question

HG Shop receives an invoice for the purchase of 40 batteries for RM8440 on 31 March 2021. Trade discounts are 5% and 3% while the cash discount terms are 8/10, n/40. HG Shop pays the invoice on 9 April 2021. The shop plans to sell the batteries by allowing read more ..

Guest May 22, 2021

383

Help please!

In triangle ABC, CA=4sqrt(2), CB=4sqrt(3), and A=60 degrees. What is B in degrees?

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Guest May 22, 2021

505

+75

heyy help plz

Let $f(x) = 2x^2 + 3x - 9, g(x) = 5x + 11, and h(x) = -3x^2 + 1. Find f(x) - g(x) + h(x).

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szastan May 22, 2021

478

This is relly confusing

Find the polynomial $p(x)$ such that \[p(p(x)) = xp(x) + x^2.\]

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Guest May 22, 2021

570

A question

Why do cheese have holes

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Guest May 22, 2021

563

ahhh please help. thank you !

In a 8 fluid ounce bottle of Vitamin Water, there are 125 calories. How many calories would be contained in a 12 fluid ounce bottle? Express your answer in decimal form.

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Guest May 22, 2021

477

+50

Doubt in example of function in my textbook

My textbook, as an example of function, says: "Let $X$ the set of the triangles in the plane and $Y$ the set of real numbers. Then the corrispondence $\text{triangle} \mapsto \text{perimeter}$ is a function from $X$ to $Y$."
I'm confused, because read more ..

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Hitago May 22, 2021

377

probability

If I choose four cards from a standard -card deck,with replacement, what is the probability that I will end up with four cards from the same suit?

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Guest May 22, 2021

May 21, 2021

459

Base numbers

What is the average of all positive integers that have four digits when written in base 3, but three digits when written in base 5? Write your answer in base 10.

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Guest May 21, 2021

461

+48

A geometry question!

In triangle ABC, CA=4sqrt(2), CB=4sqrt(3), and A=60 degrees. What is B in degrees?

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someonewhodoesmath May 21, 2021

530

+27

A lot of questions:

Hi guys,
I have a lot of questions to ask and anyone answering doesn't need to post every answer in one long post!! TYSM
1. Let $a$ and $b$ be the solutions to $5x^2-11x+4=0$. Find $$1/a+1/b$$
2.Let $u$ and $v$ be the read more ..

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Batterydude6000 May 21, 2021

542

+29

7th grade sucks

I have mentioned this before, I am in 7th grade. My question is that in 5th grade, I learned about ecosystems in textbooks. So why are my teachers teaching it in 7th grade? Has there been any major changes to the education system since 2018?

off-topic

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fuhsaha May 21, 2021

313

Trigonometry Question

Hi guys, not sure how to solve this problem, any help is appreciated: A janitor found a slice of pie left in a refrigerator he was cleaning. He measured the crust edge as 4 inches long, and the angle of the slice was 27 degrees. Find the following and round read more ..

Guest May 21, 2021

310

counting

How many 3-digit numbers contain exactly one 1 and exactly one 2?

Guest May 21, 2021

358

geometry

Two long strips of paper are each 2 inches wide, and they overlap so that the angle between the strips is 45 degrees. What is the number of square inches in the area of the parallelogram formed by the overlap?

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Guest May 21, 2021

382

Geometry

Find all integers n such that when the clock strikes n o'clock, the acute angle between the hour and minute hands is 90 degrees. Enter your answer as a comma-separated list.

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Guest May 21, 2021

545

+75

20)

Find the equation of the circle centered at (1,-4) with radius 3.
Write your equation in the form "(x - h)^2 + (y - k)^2 = r^2".

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szastan May 21, 2021

493

+75

Hi help

Find the equation of the axis of symmetry of the graph of .y = (x + 3)^2 - 5

also yes i tried x=2/3 that isnt right apparently

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szastan May 21, 2021

All Questions ⁺⁰237665 Questions

Math

algebra

Could someone confirm please?

Please help!!

Can someone help me to solve these type of question

Help please!

heyy help plz

This is relly confusing

A question

ahhh please help. thank you !

Doubt in example of function in my textbook

probability

Base numbers

A geometry question!

A lot of questions:

7th grade sucks

Trigonometry Question

counting

geometry

Geometry

20)

Hi help

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