William W.

04/14/22

pizza problems?

In a survey given to 16 students, 7 preferred pepperoni pizza, 5 preferred plain cheese and 4 students didn't have a preference.If three students are selected at random, what is the probability... more

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Algebra 2

04/13/22

Simplify. Assume all variable are positive

1.) 6∛2-∛16 (third root)2.) √x8y9 3.) ∜x8/y4 (foruth root)4.) 11√x+5√x

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Math Science Physics

04/13/22

A fridge's compressor motor consumes electrical energy at a rate of 500W when running. If it runs for 35% of each day, and a kWh costs about .10$, how much does it cost to run the fridge for a month?

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Physics Physical Science

04/13/22

A sample of frozen water requires 3.6kcal to be heated from −35◦C to 0◦C. What must the mass be?

How much energy will it take to completely melt the sample above? Don’t account for the 3.6kcal above that brought the sample up to the melting point. Express your answer in calories (or kcal).

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Finite Math

04/12/22

A sports enthusiasts’ club has 123 members.

Of the members, 102 like basketball, 69 like football, 17 like baseball, 7 like basketball and baseball, 9 like football and baseball, 52 like basketball and football, and only 2 like all three... more

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Calculus

04/12/22

Help me please!

Find the derivative (f'(x)) of the following using 4-Step Rule or Increment Method. With solution please 😭1. f(x)=4x-12. f(x)=2/5x+23. f(x)=x7 4. f(x)= x3-4x2+2x-15. f(x)=x2-1

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Math Calculus Precalculus

04/12/22

Find all critical points of 𝑓(𝑥)=6𝑥^3−18𝑥−32.

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Math Calculus Precalculus

04/12/22

Find a point 𝑐 satisfying the conclusion of the MVT for the given function and interval. 𝑦(𝑥)= √x , [36,144]

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Calculus

04/11/22

Please can you help me with this question?

Compute the following Riemann sums of the function on the interval . ..............., ................. , .................. ............., ............., ................. ............,... more

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Chemistry

04/11/22

A 437.7 ng sample of an unknown radioactive substance was placed in storage and its mass measured periodically. After 47 days the amount of radioactive substance had decreased to 54.71 ng.

How many half‑lives of the unknown radioactive substance have occurred?

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Precalculus

04/11/22

Prove the identity. 3 tan(3x) = (9 tan(x) − 3 tan^3(x)) /1 − 3 tan^2(x)

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Geometry

04/09/22

volume of right circular cone

Find the volume of right circular cone with a base radius of 8 cm and a slant angle of 32.

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Geometry

04/09/22

volume of the lead block in cubic centimeters

A lead block has a mass of 540 grams and a density of 2.70grams/mL. What is the volume of the lead block in cubic centimeters?

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Math Probability

04/09/22

Mathematics Probability

Tony had 5 red socks, 3 blue socks, and 2 white socks in a drawer. He pulled out 2 socks at random from the drawer. What is the probability that one sock is blue, and the other is red?

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Math Calculus Mathematics

04/08/22

Calculus 1 Problem

A boat leaves a dock at 2:00 PM and travels due south at a speed of 30 km/h. Another boat has been heading due east at 25 km/h and reaches the same dock at 4:00 PM. At what time were the two boats... more

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Physics

04/08/22

Roller Coaster Physics

Calculate the potential energy, kemetic energy, total energy, and velocity for a marble of 1.24 m (height)

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Physics

04/08/22

physics / helpp

An object is spun around in circular motion such that its frequency is 15Hz. How much time will be required to complete 120 rotations?

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Physics Work And Energy

04/06/22

work and energy

A basketball player throws a basketball m = 1 kg straight up with an initial speed of v0 = 5.5 m/s. The ball leaves his hand at shoulder height h0 = 2.1 m. Let gravitational potential energy be... more

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Sat Math

04/05/22

FSA REVIEW WEEK 1 PLZ RESPOND

what is the solution to the inequality -3x - 42> 3

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Algebra 1

04/05/22

Grade 9 Algebra: Please Help! Multiply Polynomial Expressions

Direction: Select a set of expressions above (Set A, Set B, or Set C) to focus on for the questions below.( I chose set B ) Set B(x+5)(x+5)(2x+9)(2x+9)(x+1)2 Identify which set of expressions you... more

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Act Math

03/29/22