05/05/20

What is P(took a vitamin | did not get the flu)?
The table below shows one doctor's patients who got the flu and whether or not they took a vitamin each day. Got The Flu Did Not get The Flu Totals Took Vitamin 25 35 60 Did Not Take... more
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05/05/20

Precalculus Algebra
Carbon-14 has a half-life of 5,730 years. A fossil is found that has 16% of the carbon-14 found in a living sample. How old is the fossil? (Round your answer to the nearest year.)
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05/05/20

Probability Question

Your local sandwich store knows that 70% of its customers choose chicken sandwiches; the rest choose ham. What is the probability of selling 2 chicken sandwiches from the next 3 customers? You may... more
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05/04/20

Need to know how to do this problem please, I’m desperate

A rocket is launched from a tower. The height of the rocket, y in feet, is related to the time after launch, x in seconds, by the given equation. Using this equation, find out the time at which the... more
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05/04/20

filling a pool without rate of starting amount
We are filling our backyard pool which holds 8000 gallons of water.  It is known to have 1200 gallons of water after 90 minutes and there are 1800 gallons of water after 3.5 hours.  (a)  Find an... more
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05/04/20

sketch the graph of y=-2 cosx for 0° ≤x ≤360 °
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05/03/20

This is a question relating to solving algebraic expression of two different blend. (3mks)
Miya answer11. Two grades of coffee one costing sh.42 per kilogram and the other costing sh.47 per kilogram are to be mixed in order to produce a blend worth sh.46 per kilogram in what proportion... more
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05/03/20

I have been having some trouble understanding how to solve this question.
Given that a colony of ants in an experiment follows the law of uninhibited growth forthe first 7 months. The colony has tripled in population after 6 months, how many monthsdid it take for the... more
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05/03/20

Help with Calc please!
The velocity of a particle moving along the x-axis is v(t) = t2 - 2t, with t measured in minutes and v(t) measured in feet per minute. To the nearest foot find the total distance travelled by the... more
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05/02/20

Help with Calc please!
The graph of y = f '(x), the derivative of f(x), is shown below. List the intervals where the graph of f is increasing. Options: 1)  (-4, -2) U (2, 4) 2)  (-2, 2) 3)  (-4, 0) 4)  (0, 4)
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05/02/20

Verify the identity 1/ 1 − sin x − 1/ 1 + sin x = 2 sec x tan x
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05/01/20

Exponential Function

On the day of a child’s birth, a deposit of $25,000 is made in a trust fund that pays 8.75% interest compounded continuously. Determine the balance in this account 25 years later.
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05/01/20

True or False Precalculus 127 Question
True or false, sin(u+pi) = sinu +sinpi for all angles u.
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04/30/20

Geometry Homework

Find the density of a 40 gram pyramid with rectangular base 5x6 cm and height of 8cm. A. 2.0 g / cm^3B. 0.5 g / cm^3C. 1.5 g / cm^3D. 0.6 g / cm^3
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04/30/20

I really need help with my homework. Thank you!
Below is the graph of f ′(x), the derivative of f(x), and has x-intercepts at x = -3, x = 1 and x = 2. There are horizontal tangents at x = -1.5 and x = 1.5. Which of the following statements is... more
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04/30/20

i do not know how to solve this
8^-x=15. what is x ? and what will x be for 8^2x=?
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04/29/20

What is the vertex of the quadratic function shown and indicate whether it is a minimum or maximum value? f(x)=x^2-8x-11

Answer options:a. (4, -27), maximum b. (-4,27), maximum c. (-4,27) minimum d. (4, -27) maximum
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04/29/20

Pre-Calculus help

Verify that 1-cos^2 theta ——————— = Sin^4 theta 1+cos^2 theta —- is a divider for the fraction
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04/28/20

Construct an exponential function from given information and then use the function to solve a contextual problem.
The evening cleaning crew at a large firm discovers a dead body in the early morning hours. Police are immediately dispatched to the scene. Upon arrival at 5:00 am, police measure the... more
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04/28/20

How do I simplify this expression using a trig. identity

Use a trigonometric identity to simplify the expression.sin∝ (csc∝-sin∝)
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04/28/20

Trigonometry, Trigonometric Identities
I need help answering this question.(sin/cos) + (cos/sin) = csc sec
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04/28/20

Please help with Calculus
A pitcher throws a baseball straight into the air with a velocity of 72 feet/sec. If acceleration due to gravity is -32 ft/sec2, how many seconds after it leaves the pitcher's hand will it take the... more
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04/20/20

Help with algebra
Solve the equation for 0 ( 0°<_ θ<360°)2sinθ=1
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04/20/20

Help with algebra
Given that: cos0=-4/5 and tan0<0In what quadrent does 0 lie?What is sin 0?What is tan 0?
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04/20/20

[EQUATION PROVIDED THIS TIME] What is the maximum height the fireworks reach? How high will the fireworks be 1 second after launch? How long after launch will the fireworks explode?

For a 4th of July celebration, some fireworks are launched off of a hill 80 feet above a lake. The fireworks will explode after reaching their maximum height before they fall down into the lake... more
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