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737

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The sequence $(a_n)$ is defined by $a_1 = \frac{1}{2}$ and \[a_n = a_{n - 1}^2 + a_{n - 1}\]for $n \ge 2.$ Prove that \[\frac{1}{a_1 + 1} + \frac{1}{a_2 + 1} + \dots + \frac{1}{a_n + 1} < 2\]for all $n \ge 1.$

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Guest Sep 19, 2020

1472

math problem

Bob is hiking down a 12-mile country trail. He could hike at 3 mph for the first two hours and then go the rest of the way at 5 mph or he could just go the whole way at 4 mph. How long would each of these options take? Which option is the faster? read more ..

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Guest Sep 19, 2020

588

+981

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Let G be the center of equilateral triangle XYZ. A dilation centered at G with scale factor 2/3 is applied to triangle XYZ, to obtain triangle X'Y'Z'. Let A be the area of the region that is contained in both triangles XYZ and X'Y'Z'. Find read more ..

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qwertyzz Sep 19, 2020

387

A metal tube has an outer diameter of 20 mm and an inner diameter of 14 mm. Itslength is 3 m

A metal tube has an outer diameter of 20 mm and an inner diameter of 14 mm. Itslength is 3 m. Find the total surface area of the tube in cm2.

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Guest Sep 19, 2020

732

The mass of a textbook is approximately 0.00175 metric ton. How is the number written in scientific notation?

help

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Guest Sep 19, 2020

560

quadrilateral question

In quadrilateral ABCD diagonal BD is the angle bisector for ∠B and ∠D. Find m∠DAC and ∠ACB if m∠ADB=20° and m∠DBC=60°.

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Guest Sep 19, 2020

634

help me pls!!! geometry

3. Triangle TUV is a right triangle with right angle at vertex T. Point M lies on TV such that ∠UMV = 115◦ . If ∠TUV = 50◦ , then what is the measure of ∠MUV?

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Guest Sep 19, 2020

489

please help

Which is the completely factored form of the following equation?

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Guest Sep 19, 2020

530

+126

help plz!

John is paid 2 1 2 times his normal hourly rate for each hour he works on a holiday. Last week he worked 45 hours, five hours were on a holiday. Find his normal hourly rate if he earned $420.

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thedudethatneedshelp Sep 19, 2020

431

please help

Triangles A and B are congruent.Find the area of triangle A.

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Guest Sep 19, 2020

433

counting question

How many numbers in the set {1, 2, 3, ..., 100} are neither multiples of 2 nor multiples of 3?

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Guest Sep 19, 2020

513

geometry

Need help on this question please

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Guest Sep 19, 2020

492

please help!

Find the area of the triangle bounded by the y-axis and the lines y - 3x = -2 and 3y + x = 12.

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Guest Sep 19, 2020

476

+981

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qwertyzz Sep 19, 2020

459

geometry problem

In a quadrilateral ABCD , AB || DC . If angle A : angle D = 2:3 and angle B : angle C = 7:8 , find the measure of each angle

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Guest Sep 19, 2020

297

geometry problem

In a quadrilateral ABCD , AB || DC . If

Guest Sep 19, 2020

446

Mary gets an oil change every 3750 miles

Mary gets an oil change for her car every 3750 miles and a tire rotation every 5000 miles. What is the mileage of the car at the first time she gets both an oil change and a tire rotation at the same time?

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Guest Sep 19, 2020

297

please help

Find angle DBC.

Guest Sep 19, 2020

283

physics help

A ball thrown vertically upwards at 40 m/s. Starting time at 0 seconds and end at t=8.0 seconds. Find the maximum height reached by the ball. (Ignore air resistance)
Also what is the difference in its speed-time graph and velocity time graph? read more ..

Guest Sep 19, 2020

384

math help

Find the sum of the distinct prime factors of 147.

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Guest Sep 19, 2020

545

geometry problem

What is the area of this figure?

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Guest Sep 19, 2020

326

inverse functions

Are the functions inverses of each other?

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Guest Sep 19, 2020

557

help with polynomial

One factor of this polynomial is (2x − 1). 2x^3+5x^2-27x+12. Use long division to determine which expression represents the other factor.

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Guest Sep 19, 2020

1862

+16

Pre-Calculus 12: Composite Functions

The radius, r, in inches, of a spherical balloon is related to the volume, V, by r(V) = cubed root(3V/4pi). Air is pumped into the balloon, so the volume after t seconds is given by V(t) = 10 + 20t.

a. Find the read more ..

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maryeverdon Sep 19, 2020

All Questions ⁺⁰230858 Questions

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math problem

Come get your free cookies

A metal tube has an outer diameter of 20 mm and an inner diameter of 14 mm. Itslength is 3 m

The mass of a textbook is approximately 0.00175 metric ton. How is the number written in scientific notation?

quadrilateral question

help me pls!!! geometry

please help

help plz!

please help

counting question

geometry

please help!

Free cookies :)

geometry problem

geometry problem

Mary gets an oil change every 3750 miles

please help

physics help

math help

geometry problem

inverse functions

help with polynomial

Pre-Calculus 12: Composite Functions

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