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538

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

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Guest Nov 22, 2020

453

Please Help!

(a) Let f(x): (-inf, 0) U (0 inf) --> R be defined by f(x) = x- (1/x)
Show that f(x) has no inverse function.
(b) Let g(x): (), inf) --> R be defined by gx) = x- (1/x)
Show that g(x) has an inverse function.

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Guest Nov 22, 2020

746

Help ASAP

A vendor has six jugs of punch with capacities of 13, 15, 16, 21, 21, and 22 gallons. One jug, which he keeps for himself, is full of blue punch. The other five jugs are full of red punch. Without opening any of the jugs, he sells 1/3 of the red punch to read more ..

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Guest Nov 22, 2020

511

Solve

3sin(x-y)sin(x+y)=0

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Guest Nov 22, 2020

500

Help!

In this problem, m and n are integers. If and , then what is the remainder when m+n is divided by 14?

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Guest Nov 22, 2020

404

positive factors

Both b and n are positive integers less than or equal to 15. What is the greatest number of positive factors b*n can have?

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Guest Nov 22, 2020

465

The sum of the positive divisors of a positive integer

The sum of the positive divisors of a positive integer of the form 2^i*3^j is equal to 1815. What is i+j?

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Guest Nov 22, 2020

755

infinite geometric series

An infinite geometric series has a first term of 12 and a second term of 4. A second infinite geometric series has the same first term of 12, a second term of 4 + n and a sum of three times that of the first series. Find the value of n.

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Guest Nov 22, 2020

407

geometric sequence

We have two geometric sequences of positive real numbers:
6,a,b and a,b,54
Solve for a

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Guest Nov 22, 2020

453

я крутыш

1000-943 разве будет =56 А?

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Guest Nov 22, 2020

646

Consider the infinite arithmetic sequence A

Consider the infinite arithmetic sequence A with first term 5 and common difference -2. Now define the infinite sequence B so that the k term of B is 3 raised to the kth term of A. Find the sum of all of the terms of B.

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Guest Nov 22, 2020

716

Quack

Which of the following equations correctly represents the distance between points (1, -1) and (-2, 2)?

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Guest Nov 22, 2020

394

quadratic

The quadratic 2x^2 - 6x + 8 can be written in the form a(x + b)^2 + c, where a, b, c and are constants. What is a + b + c?

Guest Nov 22, 2020

600

+27

Please help as soon as possible. Thanks! :D

Find a polynomial such that has degree less than .

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pleasehelpmequickthx Nov 22, 2020

716

+205

Help

Attachment below...

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parpar1 Nov 22, 2020

586

+256

Logic problem

Image attached

MELODY IS CATCHING UP TO CPHILL

BWStar Nov 22, 2020

564

quadratic

For what value of m does the equation (x + 4)(x + 1) = m + 3x have exactly one real solution?

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Guest Nov 22, 2020

484

Physics Problems, I need help!

A 7kg model airplane is banking in order to fly in a circle. The wings are generating a lift force "L" as shown. Assume the plane is maintaining a constant altitude and flying with a constant speed of 18m/s.

1. What is the read more ..

Guest Nov 22, 2020

673

+205

Biased or Reliable?

Is each sample biased or reliable? Justify your answer.

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parpar1 Nov 22, 2020

Nov 21, 2020

523

minimum

Among all pairs of numbers (x,y) such that 3x+y=15, find the minimum of x^2 + y^2.

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Guest Nov 21, 2020

394

probability

Kris wants to put six plants in a row on his windowsill. He randomly chooses each plant to be a mint plant, a basil plant, or a rose. What is the probability that either exactly four of the plants are mint plants or exactly five of the plants are basil read more ..

Guest Nov 21, 2020

676

Find the area of triangle OBC .

In triangle ABC , AB= AC=5 and BC=7. Let O be the circumcenter of triangle ABC. Find the area of triangle OBC .

read more ..

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Guest Nov 21, 2020

694

+205

DATA

Help.

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parpar1 Nov 21, 2020

All Questions ⁺⁰237749 Questions

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positive factors

The sum of the positive divisors of a positive integer

infinite geometric series

geometric sequence

я крутыш

Consider the infinite arithmetic sequence A

Quack

quadratic

Please help as soon as possible. Thanks! :D

Help

Logic problem

quadratic

Physics Problems, I need help!

Biased or Reliable?

minimum

probability

Find the area of triangle OBC .

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