All Questions ⁺⁰237261 Questions

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239

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I need help rlly bad pls help

In the SuperLottery, three balls are drawn (at random) from ten white balls numbered from 1 to 10, and one SuperBall is drawn (at random) from ten red balls numbered from 11 to 20. When you buy a ticket, you choose three numbers from 1 to read more ..

Guest Jul 3, 2022

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254

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HHEEEEELLLLLPPPPP

Suppose $\frac{x}{y}=\frac{5}{7}$ and $\frac{y}{z}=\frac{3}{4}$. What is the value of $\frac{y+z}{z}$? Express your answer as a common fraction.

Guest Jul 3, 2022

0

256

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coordinates

Find the equation of the line with slope 3/7 and that passes through the point (14,8) Write your answer in the form y = mx + b

Guest Jul 3, 2022

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193

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coordinates

The vertices of a convex pentagon are (-1,-1), (-3,4), (1,7), (6,5) and (4,-2) . What is the area of the Pentagon?

Guest Jul 3, 2022

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238

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geometry problem

In the diagram, if angle PQR = 58, what is the measure of angle PMN?

Guest Jul 3, 2022

+8

238

3

+1166

BEST mathematician out of these

newton
pythagoras
euclid
gauss read more ..

nerdiest Jul 3, 2022

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287

1

||x-2|-3| ≤ ||x|-2x|

||x-2|-3| ≤ ||x|-2x|
range of x.

Guest Jul 3, 2022

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291

1

geometry

How many units are in the sum of the lengths of the two longest altitudes in a triangle with sides 8, 12, and 14?

Guest Jul 3, 2022

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176

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help 3d geo

A right circular cone is inscribed in a right prism as shown. If the right prism is a cube of side length 10, then what is the surface area of the cone?

read more ..

Guest Jul 3, 2022

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252

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help number theory

A, B, C, and D are distinct positive integers such that the product AB = 60, the product CD = 12 and A - B = C + D. What is the value of A?

Guest Jul 3, 2022

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281

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Induction Problem

Prove that is divisible by for all nonnegative integers.

Guest Jul 3, 2022

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280

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Help

A shop sold white, pink and red T-shirts. 24% of the T-shirts were white. There were 198 more pink than white T-shirts. The remaining 114 T-shirts were red. How many pink T-shirts were there?

Guest Jul 3, 2022

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271

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Probability

A drawer contains 3 white balls and 6 black balls. Two balls are drawn out of the box at random. What is the probability that they both are black?

Guest Jul 3, 2022

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230

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Proportion

The value of y varies inversely as x and when x=2,y=4. What is x when y=1?

Guest Jul 3, 2022

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272

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geometry

A right pyramid has a square base with area 288 square cm. Its peak is 18 cm from each of the other vertices. What is the volume of the pyramid, in cubic centimeters?

Guest Jul 3, 2022

Jul 2, 2022

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239

2

Please help quick

In how many ways can 9 friends sit at a circular table if two of them, Anna and Bob, insist on having exactly two people seated between them? (As usual, two seatings are considered the same if one is a rotation of the other.)

Guest Jul 2, 2022

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226

1

Algebra

Simplify (1+3+5+...+199)/(2+4+6+...+198+200+202).

Guest Jul 2, 2022

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256

4

help probability

Two different numbers are selected simultaneously and at random from the set {1,2,3,4,5,6,7,8,9,10}. What is the probability that the positive difference between the two numbers is 3 or greater? Express your answer as a
common fraction. read more ..

Guest Jul 2, 2022

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294

2

arithmetic sequence

How many terms of the arithmetic sequence 88, 85, 82, . . . appear before the number 19 appears?

Guest Jul 2, 2022

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286

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Algebra

Kim has exactly enough money to buy 40 oranges at 3x cents each. If the price rose to 5x cents per orange, how many oranges could she buy?

Guest Jul 2, 2022

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286

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Exponents

Find all values of c such that 3^(2c + 1) = 28*3^c - 3^c. If you find more than one value of c, then llist your values in increasing order separated by commas.

Guest Jul 2, 2022

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271

2

Rate problem

Duane rode his bike at 14 miles per hour for 3 hours, then put the bike down and began walking at miles 2 per hour. Elizabeth started jogging at 5 miles per hour along the same path at the same time that Duane started biking. When she reached the bike, read more ..

Guest Jul 2, 2022

-1

302

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geometry

Line l is a straight line. What is the value of x in the diagram?

Guest Jul 2, 2022

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257

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Exponentials

The radioactive substance Iridium-192 has a half-life of 73.83 days. How many days would it take for a sample of Iridium-192 to decay to 1% of its original amount? Round your answer to the nearest integer.

Guest Jul 2, 2022

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227

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angles

How many degrees are in the measure of the smaller angle that is formed by the hour-hand and minute-hand of a clock when it is 5:20 o'clock?

Guest Jul 2, 2022

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