All Questions

341

function

The function f:R -> R satisfies
f(x)f(y) = f(x + y)
for all real numbers x and y. Find all possible functions f.

Guest Jan 24, 2021

361

algebra

Determine the unique pair of real numbers (x,y) satisfying (3x^2 + 5)(2y^2 + 8) = 40.
Enter your answer as an ordered pair in the format (x,y), where x and y are replaced by appropriate numbers.

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Guest Jan 24, 2021

615

Math

2 snowplows can clear a road 12km x 4 m in 3 hours. How long will take for 10 snowplows to clear a road 2km x 12m.

My solution is 18 minutes but in book answer is 9 minutes. Am I wrong or there is error in book? read more ..

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Guest Jan 24, 2021

501

quadratic

The equation y = -6t^2 + 51t describes the height (in feet) of a projectile launched from the surface of Mars at 51 feet per second. In how many seconds will the projectile first reach 180 feet in height?

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Guest Jan 24, 2021

597

+328

Linda's drive

Linda drove 50 miles from San Jose to San Francisco in 90 minutes. For the first 30minutes, without much traffic, her average speed was 60 miles an hour. In the second 30 minutes, due to a traffic accident along US 101, her average speed dropped to 35miles read more ..

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Potatobird Jan 24, 2021

563

+328

Julian's art

For his art project, Julian wanted to make a pixel art by completely covering the 2-feet-by-3-feet poster board with colored stickers that measure 1.5-inches-by-1.5-inches without any overlap.How many stickers would Julian need? read more ..

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Potatobird Jan 24, 2021

505

question on incircle

Triangle ABC is equilateral with side length 1. Let P be a point on the incircle of triangle ABC. Compute PA^2 + PB^2 + PC^2.

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Guest Jan 24, 2021

527

solid mensuration

he base of a right pyramid is a regular hexagon of side 4cm and its slant surfaces are inclined to the horizontal at an angle of 30 degrees. Find the volume of the pyramid. *

a.27.713 cu. cm
b.28.87 cu. cm read more ..

Guest Jan 24, 2021

793

how to do square root

The quantity sqrt(45) + 2*sqrt(5) + sqrt(360)/sqrt(2) can be expressed as sqrtN, where N is an integer. Find N.

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Guest Jan 24, 2021

-2

446

Couple of quadratic questions

Deleted.
We are not here to do all your homework for you.

COOKIEnomnom Jan 24, 2021

365

heeelp

Right angled triangle BCA. The points D and E lie on the hypotenuse such that AD= DE=EB.
Also CD= 7, CE=9
What is the length of the hypotenuse AB?
read more ..

Guest Jan 24, 2021

539

need help

Jennifer rode her bike at 12 miles per hour for 4 hours, then put her bike down and began walking at 2 miles per hour. Thomas started walking at 4 miles per hour along the same path at the same time that Jennifer started biking. When he reached the bike, read more ..

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Guest Jan 24, 2021

501

percent

We are making a juice. It contains 30% cherry juice, 60% orange juice and 10% water. Unfortunately, the prices have risen. The price of the cherry juice went up by 20% and price of the orange has risen up by 25%. By how many percent has the price risen read more ..

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Guest Jan 24, 2021

730

+23

helppp

Find $1_6 + 2_6 + 3_6 + \cdots + 45_6$. Express your answer in base $6$.

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ryan1207 Jan 24, 2021

356

Pls help :)

Let $f$ be defined by \[f(x) = \left\{ \begin{array}{cl} 3-x & \text{ if } x \leq 3, \\ -x^3+2x^2+3x & \text{ if } x>3. \end{array} \right.\]Calculate $f^{-1}(0)+f^{-1}(6)$.

My go at it:
First I attacked the $f^{-1}(0)$, read more ..

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Guest Jan 24, 2021

572

HELP ASAP!

Let u and v be the solutions to Find

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Guest Jan 24, 2021

-1

483

Help!

The roots of are a and b. Compute .

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Guest Jan 24, 2021

502

Math

A diver descended at a constant rate of 17.34 feet every 3 minutes. Which of the following is true?

A. After one minute, the diver was at -5.78 feet.
read more ..

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Guest Jan 24, 2021

489

math question

The figure shows an incircle of a triangle $ABC$ with sides 6-12-17. Let $P $ and $Q$ be the points on the side lengths $AB$ and $AC$ respectively, such that $PQ$ is tangent to the incircle. Find the perimeter of the triangle $APQ$. read more ..

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Guest Jan 24, 2021

929

+240

How many values of x between 0 and 100, EXCLUSIVE, satisfy both of the following conditions? 1. x is a multiple of 4. 2. x is a multiple

How many values of x between 0 and 100, EXCLUSIVE, satisfy both of the following conditions?
1. x is a multiple of 4.
2. x is a multiple of 6.

MooMooooMooM ●

DewdropDancer Jan 24, 2021

464

linear inequality

Find a linear inequality with the following solution set. Each grid line represents one unit.

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Guest Jan 24, 2021

584

need help

In the table, the sum of the numbers in each row, column and diagonal is the same. What is the value of P+Q+R+S?

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Guest Jan 24, 2021

482

Help quick

The quadratic equation $2x^2 + bx + 18 = 0$ has a double root. Find all possible values of $b.$

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Guest Jan 24, 2021

Jan 23, 2021

671

geometry

Suppose ABCD is an isosceles trapezoid with bases AB and CD and sides AD and BC such that CD > AB. Also suppose that CD = AC and that the altitude of the trapezoid is equal to AB. Compute AB/CD.

read more ..

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Guest Jan 23, 2021

All Questions ⁺⁰237643 Questions

function

algebra

Math

quadratic

Linda's drive

Julian's art

question on incircle

solid mensuration

how to do square root

Couple of quadratic questions

heeelp

need help

percent

helppp

Pls help :)

HELP ASAP!

Help!

Math

math question

How many values of x between 0 and 100, EXCLUSIVE, satisfy both of the following conditions? 1. x is a multiple of 4. 2. x is a multiple

linear inequality

need help

Help quick

geometry

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