All Questions ⁺⁰238326 Questions

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575

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Question about proof

Let be a positive integer.
(a) Prove that
by counting the number of ordered triples of positive integers, where in two different ways.
(b) Prove that
by counting the number of subsets read more ..

Guest Jul 20, 2021

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1080

3

binomial question

(a) Simplify
(b) For some positive integer the expansion of has three consecutive coefficients that satisfy What must be?

Please help! Sorry to have a repost but on the read more ..

Guest Jul 20, 2021

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492

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Math

Find the greatest common factor of 5! and 6!. (Reminder: If is a positive integer, then stands for the product .)

Guest Jul 20, 2021

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559

1

Find the positive difference between the solutions to the equation 6t^2 + 30 = 41t

Find the positive difference between the solutions to the equation 6t^2 + 30 = 41t

Guest Jul 20, 2021

0

315

1

please help

Find the positive difference between the solutions to the equation 6t^2 + 30 = 41t

Guest Jul 20, 2021

0

351

1

please help

Find the positive difference between the solutions to the equation 6t^2 + 30 = 41t

Guest Jul 20, 2021

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508

1

The digits $1,2,3,4$ and $5$ can be arranged to form many different $5$-digit positive integers with five distinct digits. In how many such

The digits $1,2,3,4$ and $5$ can be arranged to form many different $5$-digit positive integers with five distinct digits. In how many such integers is the digit $1$ to the left of the digit $2$? (The digits 1 and 2 do not have to be next to each other.) read more ..

Guest Jul 20, 2021

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391

1

Help needed.

Expand the product \left(x-2\right)^2\left(x+2\right)^2. What is the product of the nonzero coefficients of the resulting expression, including the constant term?

Guest Jul 20, 2021

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322

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function

Let
f(x) = -x + 3 if x <= 0
f(x) = 2x + 15 if x > 0
read more ..

Guest Jul 20, 2021

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476

1

help algebra

Find the value of x if 9^x - 6*3^x - 27 = 0

Guest Jul 20, 2021

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524

2

+89

probability

justinwh333 Jul 20, 2021

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525

1

help please

The expression 3y^2 - y - 24 can be written as (3y+a)(y+b) where a and b are integers. What is a-b ?

Guest Jul 20, 2021

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600

1

HELP!!

A surveyor needs to find the distance BC across a lake as part of a project to build a bridge. The distance from point A to point B is 325 feet. The measurement of angle A is 42° and the measurement of angel B is 110°. What is the distance BC across the read more ..

Guest Jul 20, 2021

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687

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HELP ASAP!!

You are in a hot air balloon that is 600 feet above the ground where you can see your friend. If the angle from your line of sight to your friend is 20°, how far is he from the point on the ground below the hot air balloon to the nearest foot? read more ..

Guest Jul 20, 2021

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674

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Which is one way that analyzing ice benefits scientist who study ancient climates?

Which is one way that analyzing ice benefits scientist who study ancient climates?

A) scientists can analyze frozen volcanic dust To help predict eruption's.
B) scientist can study the layers of ice cores to gather information read more ..

Guest Jul 20, 2021

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843

1

help

Joe will randomly select two letters from the word CAMP, four letters from the word HERBS, and three letters from the word GLOW. What is the probability that he will have all of the letters from the word PROBLEM? Express your answer as a common fraction.
read more ..

Guest Jul 20, 2021

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508

1

+4

help urgent

hi everyone, i need help on this problem

(a) Simplify
read more ..

userunknown5376 Jul 20, 2021

+1

554

2

+52

help

16c4-16c12
im stuck

PiggyEthyn Jul 20, 2021

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485

1

Coordinates

The equation of an ellipse is x^2+y^2/4=1. The equation of a line is y=3x+b. For what values of b is the line tangent to the ellipse?

Guest Jul 20, 2021

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317

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plz help

x^2 + bx + b + 3 = 0 has roots of the form x = (-b +/- sqrt(7))/2, where b > 0. Find b.

Guest Jul 20, 2021

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322

0

Inequalities

Let a, b, c, and d be real numbers such that a > b and c > d. Which of the below statements are true?

(A) a + c > b + d.
read more ..

Guest Jul 20, 2021

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334

0

help quadratic

What is the minimum value of the expression 2x^2 + y^2 + 8x - 24y + 62 for real x and y?

Guest Jul 20, 2021

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410

1

1/4

Guest Jul 20, 2021

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