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Jessica Maths
Questions (24)
Perform the operation shown below and leave the result in trigonometric form.
[8(cos10° + i sin10°)] [5(cos 200° + i sin
4 answers
1,037 views
Find the exact value ofcos (u+v) given that sin u= 7/25 and cos v=−12/13. (Both u and v are in Quadrant II.)
5 answers
4,255 views
Multiply; then use fundamental identities to simplify the expression below and determine which of the following is not
3 answers
2,125 views
Use the sum-to-product formulas to find the exact value of the given expression.
sin 150° + sin 30°
3 answers
1,003 views
Determine the quadrant in which an angle, θ, lies if θ = 5.40 radians.
a. 4th quadrant b. 3rd quadrant c. 2nd quadrant d. 1st
5 answers
3,014 views
Determine two coterminal angles (one positive and one negative) for θ = −503°.
a. 217°,− 323° b. 217°, − 143° c.
4 answers
2,094 views
The population P of a culture of bacteria is described by the equation P = 1600e^0.052t
where t is time, in hours, relative to
4 answers
1,904 views
Write the equation 5^2= 25 in logarithmic form.
a. log255=2 b. log25=25 c. log52=25 d. log225=5 e. log525=2
2 answers
806 views
Use a calculator to find the value for log0.94769 to four decimal places.
a. –0.0536 b. –0.9767 c. 0.9767 d. 0.0232 e.
3 answers
380 views
Find the value of x. log4 65,536 = x
a. x = 32,768 b. x=8 c. x = 65,536 d. x=4
2 answers
956 views
16. Use a calculator to find a value for ln16.1 to four decimal places.
a. 2.7788 b. –2.7788 c. –1.2068 d. 5.0814 e. 1.2068
2 answers
535 views
17. population growing at an annual rate r will triple in a time t given by the formula t = ln 3/r If the growth rate remains
3 answers
1,499 views
Assume that x, y, and b are positive numbers. Use the properties of logarithms to write the expression logb ^8xy in terms of the
1 answer
889 views
Assume that x, y and a are positive numbers. Use the properties of logarithms to write the expression loga x ^6y ^7 in terms of
2 answers
882 views
22. Solve the equation. 2x = 5
a. x = 0.5541 b. x = 5.8628 c. x = 2.3219 d. x = 1.4307 e. x = 1.6652
1 answer
299 views
Simplify the expression. log3 36
a. 6 b. 36 c. 3 d. 18 e. none of these
1 answer
392 views
Simplify the expression. 9 log 9 2
This is 9 to the power of log base 9 of 2 a. 2 b. 18 c. 4 d. 9 e. none of these
1 answer
761 views
Tritium, a radioactive isotope of hydrogen, has a half-life of 12.4 years. Of an initial sample of 69 grams, how much will
2 answers
1,083 views
Evaluate the function f(x) = log3 x at x =1/27 without using a calculator
a. –4 b. –2 c. 1/27 d. –3 e. 27
3 answers
2,325 views
Identify the x-intercept of the function f(x) = 2 ln(x-3).
a. x=3 b. x=0 c. x=2 d. x=4 e. The function has no x-intercept
3 answers
858 views
Assume that x, y, and a are positive numbers. Use the properties of logarithms to write the expression log a 9 xy in terms of
3 answers
1,145 views
Can you give me an example of properties of functions in a real life example?
1 answer
399 views
Write f(x) =x^3-11x^2+18x+32 in the form f(x)= (x-k) q (x) +r when k=6 + (square root)6, and demonstrate that f(k)=r
4 answers
376 views
a. Identify the horizontal asymptotes of the function f(x)=x+6 / |x|+1
( / = divided by/over) b. Make a summary of how you may
1 answer
479 views
Answers (7)
I guess that's what they did too as I had the same question and made the same mistake
sorry I did 7+1
so I got cos(u+v)=204/325 is this correct?
Sorry, I have figured out this one but cannot figure out this one Use the sum-to-product formulas to write the given expression as a product. sin 4θ − sin 2θ Could you help me with this one instead please?
DrBob222 please could you help me with this? Can you explain to me how to answer it?
I think that the reaction is spontaneous because no outside force is required for it to take place. Is this correct? I'm not sure about the other two parts to the question. Can you help me?
No I'm just not sure how to enter that into my calculator
