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Precalculus

05/08/23

pre calc question

One earthquake has MMS magnitude 4.2. If a second earthquake has 690 times as much energy (earth movement) as the first, find the magnitude of the second quake.

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Precalculus

05/08/23

The 1906 San Francisco earthquake had a magnitude of 7.9 on the MMS scale. Around the same time there was an earthquake in South America with magnitude 4.6 that caused only minor damage. How many... more

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Precalculus

05/08/23

pre calc question

A roasted turkey is taken from an oven when its temperature has reached 185 Fahrenheit and is placed on a table in a room where the temperature is 75 Fahrenheit. Give answers accurate to at least 2... more

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Precalculus

05/08/23

Precalculus question

Find the time required for an investment of 5000 dollars to grow to 6500 dollars at an interest rate of 7.5 percent per year, compounded quarterly. Your answer is t= years.

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Precalculus

05/08/23

pre calc question

The count in a bacteria culture was 700 after 10 minutes and 1700 after 35 minutes. Assuming the count grows exponentially,What was the initial size of the culture? Find the doubling... more

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Precalculus

05/08/23

pre calc question

The doubling period of a bacterial population is 20 minutes. At time t=110 minutes, the bacterial population was 70000.What was the initial population at time t=0? Find the size of the... more

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Precalculus

05/08/23

Precalculus question 1

At the beginning of an experiment, a scientist has 316 grams of radioactive goo. After 195 minutes, her sample has decayed to 4.9375 grams. What is the half-life of the goo in minutes? Find a... more

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Precalculus Geometry Trigonometry

05/08/23

Find an equation in x and y whose graph contains the points on the curve C.

x = t6 − 7, y = t3; t ≥ −1Sketch the graph of C, and indicate the orientation.

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Precalculus Math Calculus Sat Math

05/08/23

Can someone explain?

The cost, in dollars, of producing x feet of track lighting is given by the following function of C(x) = 0.0003x3 − 0.002x2 + 0.1x + 2,400. What is the marginal cost, the instantaneous rate of... more

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Precalculus Math Calculus Sat Math

05/07/23

What is y '''3) if y equals negative one half x to the fourth power plus two over three x to the third power minus x plus seven question mark

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Precalculus Math

05/07/23

Find the percent appreciation by using the exponential function and make an exponential equation

Using this data:Year Average Price for a House Sales 2006 $351, 231 83,0842007 $376, 236 93,1932008 $379, 080 ... more

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Precalculus Math Calculus Sat Math

05/07/23

What is f(5)x if f(x)= 3ln(x)?

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Precalculus Math Calculus Sat Math

05/07/23

What is d squared y over dx squared of the equation y = ln(x3) − sin(2x)?

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Precalculus Math Calculus Sat Math

05/07/23

Plz show step to step.

If f(x) is a twice-differentiable function such that f(2) = 2 and dy/dx=6 times the square root of the quantity x squared + 3 times y squared end quantity, then what is the value of d squared y... more

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Precalculus Math

05/07/23

Create an equation for the value of a car in x years. The car's value is $165,000 and depreciates 10% each year from its initial value .

I think I got the wrong answer but I am unsure

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Precalculus Math

05/07/23

A property is worth 1,200,000 and in the housing market properties go up 7% annually. Given the 7% rate, find out what the house will be worth in 10 years.

Using the formula A = Ao (±) r t/hWhere A represents the Final Amount, Ao represents the original amount, r represents the common ratio, t represents the time, and h represents the period that each... more

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Precalculus Math Calculus

05/06/23

Find all values of positive integer n for which a number 2^(2n)+1 is divisible by 5

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Precalculus Math Calculus

05/06/23

Find all values of positive integer n for which a number 2^(2n+1) is divisible by 5

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Precalculus

05/06/23

Exploring Average Speed

A rower wanted to determine the speed of a river's current prior to going down a particular section of the river.She released a tracker into the river. The tracker sent her back the following... more

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Precalculus Probability

05/05/23

Solution with steps please!

400 fundraiser raffle tickets are sold for $20 each for four cash prize amounts: $350, 200, $100, $50. What is the expected value of the payout? $1.75 -$18.25 -$18.05 -$1.75

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Precalculus Math Science Algebra 1

05/05/23

Word problem, algebra

At noon, the hot air balloon headed north at 8 miles per hour. Three hours later, the glider headed south from the same location at 16 miles per hour. At what time will the hot air balloon be 168... more

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Precalculus

05/05/23

roasted turkey cooling

This exercise uses Newton's Law of Cooling.A roasted turkey is taken from an oven when its temperature has reached 185°F and is placed on a table in a room where the temperature is 75°F.(a) If the... more

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Precalculus

05/05/23

Will someone please answer this Pre Calc question for me?

Vectors u and v are shown in the graph. What is projvu?(Note: vertical scale does not match horizontal scale) I could not paste the image, but the points of the vectors are...Vector u:... more

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Precalculus

05/05/23

Will someone please answer these Pre Calculus questions?

IT"S URGENT!Which of the following represents vector w = ⟨-10, -24⟩ in trigonometric form?A. w = 26(cos 67.38°i + sin 67.38°j)B. w = 26(cos 247.38°i + sin 247.38°j)C. w = 61(cos 190.39°i + sin... more

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Precalculus

05/05/23

solve: - cos 2x + cos x + cos 5x = 0

I tried to use trig identities, first the double angle formula to subside -cos 2x -2 cos^2 - 1 + cos x + cos 5x = 0 however I am lost on what to do next, should I have done something different? any... more

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pre calc question

Precalculus question

pre calc question

Precalculus question

pre calc question

pre calc question

Precalculus question 1

Find an equation in x and y whose graph contains the points on the curve C.

Can someone explain?

What is y '''3) if y equals negative one half x to the fourth power plus two over three x to the third power minus x plus seven question mark

Find the percent appreciation by using the exponential function and make an exponential equation

What is f(5)x if f(x)= 3ln(x)?

What is d squared y over dx squared of the equation y = ln(x3) − sin(2x)?

Plz show step to step.

Create an equation for the value of a car in x years. The car's value is $165,000 and depreciates 10% each year from its initial value .

A property is worth 1,200,000 and in the housing market properties go up 7% annually. Given the 7% rate, find out what the house will be worth in 10 years.

Find all values of positive integer n for which a number 2^(2n)+1 is divisible by 5

Find all values of positive integer n for which a number 2^(2n+1) is divisible by 5

Exploring Average Speed

Solution with steps please!

Word problem, algebra

roasted turkey cooling

Will someone please answer this Pre Calc question for me?

Will someone please answer these Pre Calculus questions?

solve: - cos 2x + cos x + cos 5x = 0

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