All Questions ⁺⁰230625 Questions

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238

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Counting problem

Andrew chooses a number from 1 to 100, and Mary also chooses a number from 1 to 100. (They may choose the same number.) It turns out that the product of their numbers is a multiple of 5. In how many ways could Andrew and Mary have chosen their numbers? read more ..

Guest Sep 4, 2021

-1

337

2

Polynomial

When we expand (2x+4)^6, what is the coefficient on the x^4 term?

Guest Sep 4, 2021

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333

2

help Algebra

A, B, C, D, and E went to a restaurant for dinner. A paid 1/2 of the bill, B paid 1/5 of the bill and rest of the bill was shared equally by C, D, and E. What fraction of the bill was paid by each?

Guest Sep 4, 2021

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325

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Algebra

The sum of three numbers in an arithmetic progression is 24 and their product is 440.What are the numbers?

Guest Sep 4, 2021

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187

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Function

If h(x) is a function whose domain is [-8, 8], and g(x) = h(x)^2, then the domain of g(x)is an interval of what width?

Guest Sep 4, 2021

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379

1

Probability

Suppose you have a bag that contains 1 black, 4 white, and 5 striped marbles. You select one marble, replace it, and then select another. Find the probability that you will select two striped marbles in a row.

Guest Sep 4, 2021

0

258

1

Number Theory

A repunit is a number consisting only of the digit 1, such as 111 and 11111. Find the number of digits in the smallest repunit divisible by 21 and 9.

Guest Sep 4, 2021

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379

2

+47

Pls help

Let h be a polynomial of degree 5, and suppose that , where g(x) is a polynomial of degree b. Find b.

SCZ read more ..

SmartCookiezZ Sep 4, 2021

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341

1

Counting

A Senate committee consists of 5 Republicans, 6 Democrats, and 3 Independents. A subcommittee of 3 members is randomly chosen. What is the probability that the subcommittee consists of three Republicans?

Guest Sep 4, 2021

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225

1

plz help

The diameter of a sphere placed inside a cylinder is equal to the height and to the diameter of the cylinder. If the diameter of the cylinder is 8 centimeters, what is the surface area of the sphere?

Guest Sep 4, 2021

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337

2

Counting

In how many positive four-digit integers that are not multiples of 1111 do the digits form a geometric sequence? (The digits must form a geometric sequence, in order. For example, the number 8412 does not count.)

Guest Sep 4, 2021

0

1610

1

PLTW 1.2.5 Aerospace Engineering

A Boeing 777 landed at Chicago O’Hare Airport (668 m elevation) where the pressure is 98.8 kPa. Assume that the landing speed is 196.4 mi/hr. This 777 wing has a coefficient of drag of 0.034 and its wing area is 429.1 m2. What is the drag at the point where read more ..

Guest Sep 4, 2021

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372

1

Math

Tony and Debra walk around a track. Tony walks each lap in
10
minutes. Debra walks each lap in
6 read more ..

Guest Sep 4, 2021

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230

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help geo

Draw a diagram of circle p and incribed in triangle ABC where AB = AC = 12 and BC = 8. What is the radius of circle p?

Guest Sep 4, 2021

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223

1

Geometry

Altitudes AD and BE of triangle ABC intersect at H. If angle BAC=54 and angle ABC=62, then what is angle AHB?

Guest Sep 4, 2021

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319

1

ratio

The ratio of adult cats to kittens at a pet care center on Thursday was 5:4. There were 16 kittens there that day. Monday, 27 adult cats were at the pet care center. What is the difference between the number of adult cats at the pet care center on Monday read more ..

Guest Sep 4, 2021

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197

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counting problem

How many three-digit whole numbers have at least one 7 or at least one 9 as digits?

Guest Sep 4, 2021

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239

1

help geometry

The perimeter of a rectangular garden is 690 ft. The width is 30 less than twice the length. Find the dimensions of the garden.

Guest Sep 4, 2021

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199

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pls help

Find x/y if

2sqrt(x)+1/y=13
8sqrt(x)-3/y=3

Guest Sep 4, 2021

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190

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need help

In a rectangle ABCD , point E is on side CD. The area of triangle ADE is one-fourth of the area of quadrilateral ABCE. What is the ratio of the length of segment DE to the length of segment DC? Express your answer as a common fraction. read more ..

Guest Sep 4, 2021

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213

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HELP

How what is the cost (in dollars) of copper if you wish to cover your roof with 0.0125 inches of copper? The roof is 60.0 feet by 30.0 feet. The density of copper is 8.96 g / cm3. Copper costs $2.92 per pound. Report the correct number of significant figures. read more ..

Guest Sep 4, 2021

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209

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plz help

There are ten people in the Baking Club, including Mark. They choose $3$ people to form an executive committee. How many possible committees could be formed that include Mark?

Guest Sep 4, 2021

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188

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help plz

If y varies directly with x, and y is 12 when x is 8, find y when x is 12.

Guest Sep 4, 2021

Sep 3, 2021

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298

1

Sequence

In a certain sequence, the first term is 2014. After that, each term is equal to the sum of the cubes of the digits in the previous term. What is the 2014th term in this sequence?

Guest Sep 3, 2021

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