член: SavvyBee

17 Questions
7 Answers

574

+49

Uhhhhh, help plz? I thought it was 3/7 but...

A fair coin is flipped 7 times. What is the probability that at least 5 of the flips come up heads? Give your answer as a simplified fraction.

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SavvyBee 29 июн. 2020 г.

665

+49

I don't like this problem

Hi there! I'm working on some practice problems in my workbook for a class, and I came across this problem:

Let f(x) return the number of times n appears in Pascal's Triangle. For example,(3)=2 and f(4)=2. If n is a positive прочитайте больше ..

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SavvyBee 26 июн. 2020 г.

2434

+49

Hi! I'm working on a problem with my dad and we both don't understand how to do this. Also a fun math problem! Tysm!!

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 прочитайте больше ..

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SavvyBee 19 июн. 2020 г.

777

+49

friend requested help on homework

Adam rolled two standard six-sided dice once. What is the probability that he did not roll a prime number on either die? Express your answer as a common fraction.

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SavvyBee 17 июн. 2020 г.

-1

1259

+49

A standard deck of cards has 52 cards divided into 4 suits, each of which has 13 cards. Two of the suits ( and , called `hearts' and

A standard deck of cards has 52 cards divided into 4 suits, each of which has 13 cards. Two of the suits ( and прочитайте больше ..

Не по теме

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SavvyBee 8 июн. 2020 г.

767

+49

HAAA I need help. Please :(

Hi! I've tried about eight times on this problem, submitted it, and got all of them wrong. I need help on this. Can someone please explain this problem to me? Thanks!

Six people are sitting around a circular table, and each прочитайте больше ..

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SavvyBee 26 мая 2020 г.

-1

638

+49

I've tried TOO many times :P

You are dealt cards from a standard deck of 52 cards. How many ways can you be dealt the cards so that they contain two cards of one rank, two cards of another rank, and a fifth card of a third rank? We say that such a hand прочитайте больше ..

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SavvyBee 15 мая 2020 г.

2134

+49

Need halp plz ;(

Find the number that we can place in the box so that the resulting expression can be factored as the product of two linear factors.

\[3mn - 6m + 5n + \boxed{\phantom{00}}\]
прочитайте больше ..

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SavvyBee 14 апр. 2020 г.

581

+49

Complex Number Arithmetic

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SavvyBee 14 апр. 2020 г.

609

+49

I'm confuzzled :P

Find the number that we can place in the box, so that the resulting quadratic is the square of a binomial. \[x^2 + \dfrac{4}{5}x + \boxed{\phantom{000}}\]

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SavvyBee 13 апр. 2020 г.

617

+49

need help with a problem i can't solve

Find the number that we can place in the box so that the resulting quadratic is the square of a binomial. \[x^2 + \dfrac{4}{5}x + \boxed{\phantom{000}}\]

I've seen similar problems, but I don't know how to solve them! Help please! прочитайте больше ..

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SavvyBee 13 апр. 2020 г.

739

+49

Help for a problem (off topic)

What are Vieta's formulas? Why do they matter so much.

Не по теме

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SavvyBee 13 апр. 2020 г.

-1

761

+49

?siht evlos i od woh

Let $r$ and $s$ be the roots of $3x^2 + 4x + 12 = 0.$ Find $r^2 + s^2.$

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SavvyBee 12 апр. 2020 г.

-1

2390

+49

Let $r$ and $s$ be the roots of $3x^2 + 4x + 12 = 0.$Find $r^2 + s^2.$

Let $r$ and $s$ be the roots of $3x^2 + 4x + 12 = 0.$ Find $r^2 + s^2.$

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SavvyBee 12 апр. 2020 г.

-2

675

+49

Help please quick! :(

Simplify the expression
\[\frac{1}{\sqrt{36} + \sqrt{27}} + \frac{1}{\sqrt{27} + \sqrt{18}} + \frac{1}{\sqrt{18} + \sqrt{9}}.\]

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SavvyBee 12 апр. 2020 г.

-4

2346

+49

please help fast!

Of the five quadratics listed below, four of them have two distinct roots. The fifth quadratic has a repeated root. Find the value of the repeated root.
\begin{align*}
&-x^2 + 18x + 81 \\
&3x^2 - 3x - 168 \\
&x^2 - 4x - 4 \\ <#> &25x^2 прочитайте больше ..

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SavvyBee 8 апр. 2020 г.

+49

Thank you so much!!! This really helps. :3

SavvyBee19 июн. 2020 г.

+49

-1

Yeah, I've gotten this wrong a ton of times. Thank you! It's Week 3 right now, problem 7.

SavvyBee15 мая 2020 г.

+49

Thank you so so much! :)

SavvyBee14 апр. 2020 г.

+49

-1

thank you!

SavvyBee14 апр. 2020 г.

+49

Can you please explain how you got that answer? Where did you get -4 from?

SavvyBee12 апр. 2020 г.

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