All Questions ⁺⁰237643 Questions

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281

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math

Luis works as a salesperson at an electronics store and sells phones and phone accessories. Luis earns a $14 commission for every phone he sells and a $2 commission for every accessory he sells. On a given day, Luis made a total of $110 in commission from read more ..

Guest Nov 25, 2022

Nov 24, 2022

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172

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help algebra

Let a and b be real numbers such that a + b = 4 and a^4 + b^4 = 16.
(a) Find all possible values of ab
(b) Find all possible values of a + b
(c) Find all possible values of a and b

Guest Nov 24, 2022

0

207

3

help geometry

Let ABC be a triangle, and let its angle bisectors be AD, BE, and CF, which intersect at I. If DI = 3, BD = 4, and BI = 8, then find the area of triangle ABC.

Guest Nov 24, 2022

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239

2

Parabolas

The vertex of a parabola is at (12,-4) and its axis of symmetry is vertical. One of the x-intercepts is at (18,0). What is the x-coordinate of the other x-intercept?

Guest Nov 24, 2022

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208

2

Let a and b be numbers such that a^3=5 and b^3=4. Find the value of (ab^2)^{-3}.

Let a and b be numbers such that a^3=5 and b^3=4. Find the value of (ab^2)^{-3}.

Guest Nov 24, 2022

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250

0

+180

Instantaneous ROC

A Ferris wheel has a maximum height of 56 m and a minimum height of 14 m. It can make one rotation in 45 seconds. During the first rotation, when is the instantaneous rate of change of the height of a chair on the Ferris wheel 0, if it starts read more ..

DumbDude05 Nov 24, 2022

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270

2

+180

If the arc subtended by an angle of 1 radian on a circle equals 35 cm, what is the radius of the circle?

If the arc subtended by an angle of 1 radian on a circle equals 35 cm, what is the radius of the circle?

DumbDude05 Nov 24, 2022

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195

1

counting

In a row of five squares, each square is to be colored either red, yellow, or blue, so that no two consecutive squares have the same color, and at lest three of the squares are red. How many ways are there to color the five squares?

Guest Nov 24, 2022

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202

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triangles

Triangle ABC is a right triangle with angle BAC= 90 degrees and angle B > angle . Suppose AP is an altitude of the triangle, AQ is an angle bisector of the triangle, and AR is a median of the triangle, and angle PAQ = 18 degrees. If P read more ..

Guest Nov 24, 2022

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185

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help with algebra

Fill in the blanks to make the equation true.

xy xy^2 xy^3 x^2 y x^3 y x^2 y^2 x^2 y^3 x^3 y^2
read more ..

Guest Nov 24, 2022

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245

4

+30

Algebra Question Please Help

If then what is

Ninchux Nov 24, 2022

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169

0

help plz

Consider the two expressions (6x^3 + 9x^2 + 4x + 7 - 17x^2 - 8x + 8)/(2x + 3 - 7x - 11) and 4x^2 - 7 + 1/(2x + 3 - 7x - 11)
a) Show that the two expressions represent equal numbers when x = 10
b) Explain why these two expressions do not represent read more ..

Guest Nov 24, 2022

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188

0

geometric series

For a real number r, let s(r) denote the set of real numbers that can be expressed in the form
a1 r + a2 r^2 + a3 r^3 + ...
with an infinite number of terms, where ai in {0,1}
(a) Show that 1/2 an element in S(1/4)
(b) Show that 1/5 read more ..

Guest Nov 24, 2022

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203

1

Probability

The following cards are dealt to three people at random, so that everyone gets the same number of cards. What is the probability that everyone gets a red card?

[There are three red cards and three blue cards]

Guest Nov 24, 2022

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167

0

Algebra question

A magician makes potions by combining maple syrup from a magical maple tree with ordinary water. The magician starts with a large supply of two potions: a red potion, which is 75% magical syrup by volume (and the rest is just water), and blue potion, which read more ..

Guest Nov 24, 2022

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214

1

Rectangles

Two rectangles overlap, as shown below. Find the area of the overlapping region (which is shaded) if AB = BE = 2 and AD = ED = 4.

read more ..

Guest Nov 24, 2022

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186

0

help algebra

Carissa the chessplayer is a very, very slow walker. In fact, she walks at 100 meters per hour when walking uphill, 180 meters per hour when walking across flat ground, and 250 meters per hour when walking downhill. One day, read more ..

Guest Nov 24, 2022

+1

213

1

Geometry

The two circles below are externally tangent. A common external tangent intersects line PQ at R. Find QR.

Guest Nov 24, 2022

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212

1

help plz

Pearl writes down seven consecutive integers, and adds them up. The sum of the integers is euqal to 15 times the largest of the seven integers. What is the smallest integer that Pearl wrote down?

Guest Nov 24, 2022

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186

0

Stuck on this

Can anyone help?

Six children are each offered a single scoop of any of 3 flavors of ice cream from the Combinatorial Creamery. In how many ways can each child choose a flavor for their scoop of ice cream so that each flavor of ice read more ..

Guest Nov 24, 2022

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283

2

Graphing question

What is the smallest distance between the origin and a point on the graph of y = 1/2*(x^2 - 8)?

Guest Nov 24, 2022

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227

2

Please help

At first, Desmond had $18.50 and Hugh had $21.65. Each of them bought a book at the same price. In the end, Hugh had twice as much money as Desmond left. How much did the book cost?

Guest Nov 24, 2022

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215

2

Pls help. Thanks

Barry bought some apples, oranges and pears. The apples are sold at 4 apples for $10. The price of oranges is 25% cheaper than that of apples. The pears are sold at 2 pears for $4.20. Barry spent $30 on some apples, $15 on some oranges and read more ..

Guest Nov 24, 2022

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298

2

Probability question

A standard six-sided die is rolled twice. What is the probability that the product of the rolls is 3 or 12?

Guest Nov 24, 2022

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175

0

Counting problem

In the array below, in how many different ways can we start with the letter A and move from letter to letter (horizontally, vertically, or diagonally), to spell the word "ARCH"?

A
RRR read more ..

Guest Nov 24, 2022

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