12/09/23

At the beginning of an experiment, a scientist has 200 grams of radioactive goo. After 255 minutes, her sample has decayed to 3.125 grams.
At the beginning of an experiment, a scientist has 200 grams of radioactive goo. After 255 minutes, her sample has decayed to 3.125 grams. What is the half-life of the goo in minutes?  Find a... more
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12/09/23

The half-life of Radium-226 is 1590 years. If a sample contains 300 mg, how many mg will remain after 2000 years?

The half-life of Radium-226 is 1590 years. If a sample contains 300 mg, how many mg will remain after 2000 years? 
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12/09/23

The half-life of Palladium-100 is 4 days. After 12 days a sample of Palladium-100 has been reduced to a mass of 7 mg.
The half-life of Palladium-100 is 4 days. After 12 days a sample of Palladium-100 has been reduced to a mass of 7 mg.
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12/09/23

Business statistics

A certain disease has an incidence rate of 0.7%. If the false negative rate is 5% and the false positive rate is 2%, compute the probability that a person who tests positive actually has the... more
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12/08/23

Find a degree 3 polynomial with real coefficients having zeros 3 and 2-2i and a lead coefficient of 1. Write P in expanded form. Be sure to write the full equation, including P(x)
Find a degree 3 polynomial with real coefficients having zeros 3 and 2-2i and a lead coefficient of 1. Write P in expanded form. Be sure to write the full equation, including P(x)
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12/08/23

nth distinct root
How do I show (1+i)^n = -9 algebraically and graphically.I figured out that polar form form 1+i. Not sure what to do with -9sqrt 2^p(cos (p⋅45°)+ i sin (p⋅45°).please show work
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12/08/23

A store has a 20% off sale on pants. With this discount, the price of one pair of pants before tax is $15.20. What was the original price of the pants?
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12/08/23

Algebra word problem
A vertical meter stick casts a shadow 1 7/8 ft. At the same time of day, a light post casts a shadow of 14 2/7 ft. How tall is the light post? Draw an image to represent the situation.
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12/08/23

Tony had 20$ he wants to buy at least 4 snacks. Hot dogs (x) are 3$ each peanuts (y) are 2$ each

So what would be the total price? I have never done this one before.Total snacks: X + Y > (greater than or equal to) 4Total price: 3x + 2y < (less than or equal to) [?]
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12/08/23

Find all solutions on the interval [0,2pi). (Answer as a comma-separated list. Round answer to four decimal places)
cos(5x)cos(4x) + sin(5x)sin(4x) =1
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12/08/23

Understanding the algebra problem
A ball is thrown upward and outward from a height of 6 feet. The height of the ball, 𝑓(𝑥), in feet, can be modeled by 𝑓(𝑥) = −0.6𝑥^2 + 2.7𝑥 + 6 where 𝑥 is the ball’s horizontal distance, in feet,... more
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12/08/23

Pre-cal with Algebra
A ball is thrown upward and outward from a height of 6 feet. The height of the ball, 𝑓(𝑥), in feet, can be modeled by 𝑓(𝑥) = −0.6𝑥^2 + 2.7𝑥 + 6 where 𝑥 is the ball’s horizontal distance, in feet,... more
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12/08/23

Pre-cal with Algebra
A ball is thrown upward and outward from a height of 6 feet. The height of the ball, 𝑓(𝑥), in feet, can be modeled by 𝑓(𝑥) = −0.6𝑥^2 + 2.7𝑥 + 6 where 𝑥 is the ball’s horizontal distance, in feet,... more
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12/08/23

Understanding the algebra problem
A ball is thrown upward and outward from a height of 6 feet. The height of the ball, 𝑓(𝑥), in feet, can be modeled by 𝑓(𝑥) = −0.6𝑥^2 + 2.7𝑥 + 6 where 𝑥 is the ball’s horizontal distance, in feet,... more
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12/08/23

Line g passes through points (5, 1) and (3, 4). Line h passes through points (7, 7) and (4, 5). Are line g and line h parallel or perpendicular?
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12/07/23

A rectangle has an area of 288 square meters and a base of 18 meters. What is the height?
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12/07/23

Lin runs 5 laps around a track in 6 minutes. How many laps per minute is that?
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12/07/23

Find a degree 3 polynomial with real coefficients having zeros 3 and 2i. and a lead coefficient of 1. Write p in expanded form. Be sure to write the full equation,
Find a degree 3 polynomial with real coefficients having zeros 3 and 2i. and a lead coefficient of 1. Write p in expanded form. Be sure to write the full equation,
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12/07/23

Find an equation of a degree 3 polynomial (in factored form) with the given zeros of f(x): 2,3,-2. Assume the leading coefficient is 1.
Find an equation of a degree 3 polynomial (in factored form) with the given zeros of f(x): 2,3,-2.  Assume the leading coefficient is 1.
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12/07/23

Find the measure of the third side. Do not use a calculator.
a = 6, b = 8, γ = 60° a = 15, c = 22, β = 135° Solve the triangle. Round answers to the nearest tenth. (No digram given) b = 3.4, c = 2.8, α = 82° a = 11.2, b = 15.3, γ = 116.4°
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12/07/23

Twice the difference of a number and 2 is 8.

Twice the difference of a number and 2 is 8. use the variable x for the unknown number.
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12/07/23

Reflect the point (4, -5) across the y-axis
Reflect the point (4, -5) across the y-axis
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12/06/23

pre calculus 12 grade
Given three functions below, which expression equals ( s o h o v) ( x)?h(x)= 2x^3, s(x)= square root of x-5, v(x)= I3xI
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12/06/23

find me the missing side
A 7-ft ladder leans against the side of a house. How far is the bottom of the ladder from the side of the house when the angle of elevation of the ladder is 62 degrees? Round your answer to the... more
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12/06/23

ANGEL OF DEPRESSION

A lighthouse, depression 30 of m a tall, ship is from built the on top top of of Q the cliff that lighthouse is 180 m high. Find the angle the bottom of the cliff.
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