2,218 Answered Questions for the topic Pre Calculus
Find the magnitude and the direction angle for:
a) v=<2, −2√3> b) v=<−3,−3> c) v=<−5√3,5>
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05/20/18
Given each function: Find the x- and y-intercepts, the domain, the vertical and horizontal asymptotes, and then sketch a complete graph of the function.
a) f(x)= 1-x/x+2 b) f(x)= 2x-4/1-x
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Pre Calculus
05/11/18
Which components are a possible representation of vector u if ||-4u|| ≈ 14.42?
i need the answer to this question. Please HELP!
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Pre Calculus Math
05/07/18
Find A using the formula A=Pe^rt given the values below. Round to the nearest tenth
p=24,000
r=10.9%
t=50 years
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Pre Calculus Math
05/07/18
The following function is one to one. Rest below
Find the inverse of the function and express it using f^-1(x)
f(x)= x/9 + 4/9 (fractions)
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A function f has the property that f(x/2) = Sqrt((1 + f(x))/2) for 0 <= x <= 1. If f(a) = 0 where 0 <= a <=1, what is the value of f(a/4)?
Apparently the answer is 0.98, but I have no idea how to get that.
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A fossilized leaf contains 13% of its normal amount of carbon 14. How old is the fossil (to the nearest year)? Use 5600 years as the half-life of carbon 14
Show all steps.
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04/29/18
The value of a particular investment follows a pattern of exponential growth. In the year 2000, you invested money in a money market account
The value of your investment t years after 2000 is given by the exponential growth model A = 8300e^0.064t. How much did you initially invest in the account?
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04/29/18
Find out how long it takes a $2900 investment to earn $500 interest if it is invested at 7% compounded semiannually. Round to the nearest tenth of a year
Use the formula A = P (1 +r/n)^nt.
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04/29/18
Larry has $2800 to invest and needs $3300 in 20 years
What annual rate of return will he need to get in order to accomplish his goal, if interest is compounded continuously? (Round your answer to two decimals.)
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04/29/18
Solve the logarithmic equation. Be sure to reject any value that is not in the domain of the original logarithmic expressions. Give the exact answer.
log 3 (x + 6) + log 3 (x - 6) - log 3 x = 2
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04/29/18
Solve the exponential equation. Use a calculator to obtain a decimal approximation, correct to two decimal places, for the solution
7^x = 6^x + 7
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04/29/18
Use properties of logarithms to condense the logarithmic expression. Write the expression as a single logarithm whose coefficient is 1.
QUESTION IS:1/5 [5ln (x + 9) - ln x - ln (x^2 - 9)]
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04/29/18
Logarithim Question
Solve the Equations
1.log x=6
I got 100,000 but I am just checking to see if I am correct
2. log(lower)5 (regular)5^3
I got 3
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04/28/18
Evaluate or simplify the expression without using a calculator. 10log 6√x
Show all steps for 10 log 6 radical x
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04/28/18
Find the domain of the logarithmic function. f(x) = log(x+5/x-2)
Show all steps. The equation is f(x)=log (x+5 over x-2)
04/28/18
Write the equation in its equivalent logarithmic form. root(3,125)=5
The 3 is outside of the root and the 125 is in the root.
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04/28/18
Use the compound interest formulas A=P(1+(r)/(n))^nt and A=Pe^rt to solve.
Find the accumulated value of an investment of $5000 at 7% compounded continuously for 6 years.
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Pre Calculus Sigma
04/24/18
Converting a series to sigma notation
Convert the following series into sigma notation: 1+4+16+...256
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Pre Calculus Sigma
04/24/18
Converting a series to sigma notation
Write the series -8+4-2+1 in sigma notation.
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Pre Calculus Sigma
04/24/18
Write the following series in sigma notation: 1+4+16+...+256
There are no additional details following my question
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Pre Calculus Calculus
04/22/18
Find the accumulated value of an investment of $ 17,000 at 6% compounded annually for 13 years.
Use the compound interest formulas A = P(1+r/n)^nt and A=Pe^rt to solve.
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04/10/18
If vector u is <3,4> and vector b is also <3,4>, then is vector a parallel to b or is it equal to it
I am honestly confused on if 2 vectors have the same change in x and y values then is it parallel or equal to it. And for example if 1 vector is double the other then how are they parallel, whywo...
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04/07/18
Put the equation into standard form and identify the vertex, focus and directrix.
25x2+ 20x + 5y − 1 = 0
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