Member: SavvyBee

17 Questions
7 Answers

570

+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.

●

SavvyBee Jun 29, 2020

661

+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 read more ..

●

SavvyBee Jun 26, 2020

2431

+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 read more ..

●●●

SavvyBee Jun 19, 2020

776

+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.

●

SavvyBee Jun 17, 2020

-1

1256

+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 read more ..

off-topic

●●

SavvyBee Jun 8, 2020

765

+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 read more ..

●●

SavvyBee May 26, 2020

-1

636

+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 read more ..

●●●●

SavvyBee May 15, 2020

2132

+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.

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

●●

SavvyBee Apr 14, 2020

577

+49

Complex Number Arithmetic

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.

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

●

SavvyBee Apr 14, 2020

605

+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. \[x^2 + \dfrac{4}{5}x + \boxed{\phantom{000}}\]

●

SavvyBee Apr 13, 2020

614

+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! read more ..

●●

SavvyBee Apr 13, 2020

738

+49

Help for a problem (off topic)

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

off-topic

●●

SavvyBee Apr 13, 2020

-1

757

+49

?siht evlos i od woh

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

●●

SavvyBee Apr 12, 2020

-1

2389

+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 $r^2 + s^2.$

●●

SavvyBee Apr 12, 2020

-2

671

+49

Help please quick! :(

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

●●

SavvyBee Apr 12, 2020

-4

2345

+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 read more ..

●

SavvyBee Apr 8, 2020

+49

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

SavvyBeeJun 19, 2020

+49

-1

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

SavvyBeeMay 15, 2020

+49

Thank you so so much! :)

SavvyBeeApr 14, 2020

+49

-1

thank you!

SavvyBeeApr 14, 2020

+49

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

SavvyBeeApr 12, 2020

Username	SavvyBee
Score	49
Membership
Stats
Questions	11
Answers	7