(sin x + sin 3x + sin 5x )/ (cos x + cos 3x + cos 5x) = tan 3x

how do you prove this identity (using a level maths)

07/15/18

Find the area of the indicated region under the standard normal curve. The area between zequals0 and zequals1 under the standard normal curve is nothing.

The area between zequals0 and zequals1 under the standard normal curve is nothing.

07/14/18

percentage as a ratio

 what is 2.5% as a ratio

. Suppose you have a sequence that begins {0, 2, 6, 12}.Give the next 3 numbers in your sequence. Use a positional definition to define your sequence.

Can I have a breakdown to better understand. I am wanting to double check my work to make sure I am on the right track of solving these kind of problems.

07/14/18

Suppose you have a sequence that begins {2, 7, 17, 37}. Give the next 3 numbers in your sequence. Use a recursive definition to define your sequence.

Can I have a break down on how to get the answer. For example use.

07/13/18

Lawn dimensions

A Rectagular lawn with area of 912. Perimeter is 134. What are dimensions of lawn?

07/13/18

How many of each type of ad can the department run each month?

A health insurance company advertises on television, on radio, and in the local newspaper. The marketing department has an advertising budget of $92,600 per month. A television ad costs $2000, a... more

07/13/18

After how many years will a $2400 sapphire ring be worth at least $8000 if it increases in value by 10.5% p.a.

I don't know the formula for this question and need help working it out and need help understanding the question.

Linear Equations in Two variables

If a two digit number is divided by the sum of its digits the quotient is 9. But the number obtained by reducing the digit at the tens place by the four times the digit at unit's place , leaves the... more

General asymptotic growth question

Show that n! = o(nn)  for positive n

07/12/18

Sean bought 0.24 pound of peanuts what is this number as a fraction in simplest form

I need help with this math problem really bad is so hard for me

07/12/18

Let B be an event such that P(B) > 0. Prove: (a) P(A|B) + P(Ac |B) = 1.

I need help

07/12/18

Find P(A ∩ B) if P(A) = 0.2, P(B) = 0.4 and P(A|B) + P(B|A) = 0.75.

i need help on this please

Quadrilaterals.

Identify all of the quadrilaterals in the list with equal opposite sides.  Rectangle Square  Parallelogram Rhombus Trapezoid Hexagon

compound Interest

What is the present value of CD with 4% annual interest that matures in 1 year with the value of $3000? What is the future value? What factor would determine which value you chose to use?

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