ghistory

16 Questions
0 Answers

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+64

Halp with probability!

The grid below is made up of line segments, like the line segment in red.
[asy]
unitsize(1 cm);
int i;
for (i = 0; i <= 3; ++i) {
draw((i,0)--(i,2));<#> }<#> for (i = 0; i <= 2; ++i) {<#> draw((0,i)--(3,i));<#> read more ..

ghistory 5 hours ago

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6

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+64

help me pls with counting and probability

Find the number of ways of choosing three circles below, so that no two circles are next to each other.
[asy]
unitsize(1 cm);
int i;
for (i = 0; i <= 11; ++i) {<#> draw(Circle(2*dir(360/12*i),0.3));<#> label(string(i + 1), read more ..

ghistory Oct 13, 2024

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11

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+64

Halp Asap!

All sacks of sugar have the same weight. All sacks of flour also have the same weight, but not necessarily the same as the weight of the sacks of sugar. Suppose that two sacks of sugar together with five sacks of flour weigh no more than $60$ pounds, and read more ..

ghistory Aug 3, 2024

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18

2

+64

halp

A magician makes potions by combining maple syrup from a magical maple tree with ordinary water. The magician starts with a large supply of two potions: a red potion, which is 60% magical syrup by volume (and the rest is just water), and blue potion, which read more ..

ghistory Jun 29, 2024

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8

2

+64

halp ASAP

One ordered pair $(a,b)$ satisfies the two equations $ab^4 = 48$ and $a^2 b^3 = 24$. What is the value of B in this ordered pair?

ghistory Jun 27, 2024

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10

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+64

Halp

Find the ordered pair $(s,t)$ that satisfies the system
\begin{align*}
\dfrac{s}{2} + 5t &= 3,\\
3t - 6s &= 9. read more ..

ghistory Jun 27, 2024

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11

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+64

halp pls

Real numbers A and B satisfy: a + ab^2 = 250b, a - ab^2 = -240b enter all values of a, separated by commas.

ghistory Jun 26, 2024

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11

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+64

halp

1
For certain values of k and m the system \begin{align*}
a + 2b &= -3, \\
4a + 2b &= k - a - mb
\end{align*}
has infinitely many solutions (a,b) What are k and m?
2 read more ..

ghistory Jun 26, 2024

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11

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+64

halp asap!

1 Sophie's favorite (positive) number is a two-digit number. If she reverses the digits, the result is less than her favorite number. Also, one digit is less than double the other digit. What is Sophie's favorite number?
2 Seven read more ..

ghistory Jun 26, 2024

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21

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+64

help pls asap!

b) For which values of x and y does $(x + y)^2$ equal $x^2 + y^2?$ For which values of x and y does $(x + y)^2$ not equal $x^2 + y^2?$

ghistory Jun 18, 2024

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9

1

+64

halp asap

Solve for the variable x in terms of y and z, assuming $y \neq \frac{1}{2}$: \[xy + x = \frac{3x + 2y + z}{2}.\]

ghistory Jun 18, 2024

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18

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+64

help please

Let's take a look at $(x + y)^2$ and $x^2 + y^2$ . While Beeker believes that these two expressions are equal for all real numbers $x$and $y,$Clod believes they are not! Let's get to the bottom of this!
a) read more ..

ghistory Jun 18, 2024

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12

1

+64

halp asap

Let's take a look at $(x + y)^2$ and $x^2 + y^2$ . While Beeker believes that these two expressions are equal for all real numbers $x$and $y,$Clod believes they are not! Let's get to the bottom of this!
a) read more ..

ghistory Jun 17, 2024

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14

1

+64

halp asap!

What is the value of $\sqrt[3]{2a^2 b^4} + \dfrac{a - c}{(b+c)^2}$ if $a = 4$,b = 2 c = -5?

NotThatSmart ●

ghistory Jun 17, 2024

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+64

halp asap

What is the value of $(a+b)\sqrt{cd}$ if $a = 2$ , $b = 4$, $c = 3$, and $d = 12$?

NotThatSmart ●●

ghistory Jun 17, 2024

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15

1

+64

halp pls asap

Pearl writes down seven consecutive integers, and adds them up. The sum of the integers is equal to 28/5 times the largest of the seven integers. What is the smallest integer that Pearl wrote down?

ghistory Jun 12, 2024