All Questions ⁺⁰238211 Questions

0

534

3

help

I have a bag with marbles numbered from 1 to 6. Mathew has a bag with marbles numbered from 1 to 12. Mathew chooses 1 marble from his bag and I choose 2 from mine. In how many ways can we choose the marbles (where the order of my choices does matter) such read more ..

Guest Jul 2, 2021

0

466

1

need help

The equation y = -16t^2 + 60t + 54 describes the height (in feet) of a ball thrown upward at 60 feet per second from a height of 54 feet from the ground, where represents time, measured in seconds. In how many seconds will the ball hit the ground? Express read more ..

Guest Jul 2, 2021

0

474

1

Square roots

The square root of h is greater than 10/3 and less than 42/5. How many integer values of h satisfy this condition?

Guest Jul 2, 2021

0

588

1

pls help

How many zeroes do we write when we write all the integers from 1 to 256 in binary?

Guest Jul 2, 2021

0

665

5

help pls

Let S be a cube. Compute the number of planes which pass through at least 3 vertices of S

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Guest Jul 2, 2021

0

315

0

Fibonacci sequence

In the first 103 numbers of the Fibonacci sequence, how many are divisible by 5?

Guest Jul 2, 2021

0

534

2

quadratics

Wilma and Greg were trying to solve the quadratic equation x^2 + bx + c = 0.Wilma wrote down the wrong value of b (but her value of c was correct), and found the roots to be 1 and 8. Greg wrote down the wrong value of c (but his value of b was correct), read more ..

Guest Jul 2, 2021

+1

444

2

help with math

The average of the integers N + 1, N + 2, ..., 2N is 20. What is N?

Guest Jul 2, 2021

+1

495

1

+20

HELP!!

DrBrain824 Jul 2, 2021

0

317

0

help algebra

Find all the values of a for which the equations
x^2 + ax + 1 = 0
x^2 - 3x - a = 0
read more ..

Guest Jul 2, 2021

+1

516

4

+89

2 questions

justinwh333 Jul 2, 2021

0

508

3

Help me plz.

Find all values of $y$ that satisfy the equation \[\frac{y}{3} + 1 = \frac{y + 3}{y}.\]

Guest Jul 2, 2021

0

288

0

need help

Given that x satisfies x^2 - 8x + 1 = 0 , find the value of x + 1/x.

Guest Jul 2, 2021

0

372

1

help!

At time $t=0,$ a ball is thrown downward at 24 feet per second from a height of 160 feet above the ground. The equation $h = -16t^2 - 24t +160$ describes the height (in feet) of the ball. In how many seconds will the ball hit the ground? read more ..

Guest Jul 2, 2021

0

419

1

HELPPPPP

What is 64^2 + 145 - 45 * 2 - 14 =

read more ..

Guest Jul 2, 2021

0

510

2

+58

PLEASE HELP!!!

Problem: In triangle ABC with incenter I and circumcenter O. Let P be the reflection of A over OI and Q be the second intersection of line OI with the circumcircle of BIC. Prove that lines AI, BC, and PQ concur.

So for this read more ..

hellothere Jul 2, 2021

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465

1

HELP

Eight balloons (two blue, two green, two yellow, and two red) are randomly arranged in a line. Balloons of the same color are indistinguishable from one another.

Find the total number of possible arrangements
Find the read more ..

Guest Jul 2, 2021

0

496

2

help

A basketball team has ten players, three of which are all stars. How many five player starting lineups can be chosen that include at least two of the all stars?

Guest Jul 2, 2021

0

430

3

HELLPPPP

Evaluate $(a^b)^a - (b^a)^b$ for $a = 2$ and $b = 3$.

Guest Jul 2, 2021

0

373

1

help geometry

Three circles fit inside a square as shown where two small circles touch a large circle. Given that the radius of the small circles is 3 and the side length of the square is 14, find the radius of the larger circle
read more ..

Guest Jul 2, 2021

0

486

1

help

In a group of ten girls and eight boys on the prom committee two of each must be chosen for the decoration committee. One of the decoration committee members will then be chosen as the leader of the committee. In how many ways can this committee be chosen? read more ..

Guest Jul 2, 2021

0

476

2

help with counting

The six faces of a three-inch wooden cube are each painted red. The cube is then cut into one-inch cubes along the lines shown in the diagram. How many of the one-inch cubes have red paint on at least one face?

read more ..

Guest Jul 2, 2021

+1

1107

5

+197

Find the vertex of the graph of the equation $y = -2x^2 + 8x - 15.$

Find the vertex of the graph of the equation $y = -2x^2+8x-15$, I've tried this problem and I got (-2, -23) every time, I don't see where I'm going wrong, I need some help with this problem.

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icecreamlover Jul 2, 2021

0

438

1

Counting

How many strings of length 5 of the letters A, B, C, D, and E contain exactly one A and exactly one D if repetition of letters is allowed?

Guest Jul 2, 2021

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