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# Verify the identity cos^3xsin^2x = (sin^2x-sin^4x)cosx

This is for my trig class, and the directions say to verify the identity. Thanks so much.

# The marginal cost of a product can be thought of as the cost of producing one additional unit of output. For example, if the marginal cost of producing the ...

The Marginal cost of a product can be thought of as the cost of producing one additional unit of  output. For example, if the marginal cost of producing  the 50th product is \$6.20, it cost...

# In order to do work, the force you exert must be what?

This on my science study guide and i cant figure it out: In order to do work, the force you exert must be what?

# Is a number between?

If f(x)=8-x^2 for -2≤x≤2, f(x)=x^2 elsewhere, then ∫ f(x) dx from -1 to 3 is a number between?   a) 0 and 8 b) 8 and 16 c) 16 and 24 d) 24 and 32 e) 32 and 40   Answer:...

# Set up a triple integral?

Set up a triple integral that equals the volume of the intersection of the interior of two cylinders of radius a>0 whose axes intersect at a right angle. HINT: Take one of the cylinders to be:...

# linear equations

Is this statement true?   An inconsistent system  of linear equations has NO solutions (s) and the line graphed will BE PARALLEL.

# If n is a non-negative integer?

If n is a non-negative integer, then ∫ x^n dx from 0 to 1=∫ (1-x)^n dx from 0 to 1 for?   a) no n b) n even, only c) n odd, only d) nonzero n, only e) all n   Answer:...

# let A,B,C and D be the four rational zeros of the function defined by p(x)= 3x^4-8x^3-11x^2+28x-12 Compute (1+A)(1+B)(1+C)(1+D)

problem of the week final answer must be in the form of (1+A) (1+B) (1+C) (1+D) using the function p(x)= 3x^4-8x^3-11x^2+28x-12

# Diana is buying seven avocados. Each avocado weighs 8 oz. How much will they cost her if avocados cost \$2.00 a pound?

I am working on operations with time and mixed units. The question is: Diana is buying seven avocados. Each avocado weighs 8 oz. How much will they cost her if avocados cost \$2.00 a pound?

# how do i write the expression in the standard form a+b i? (9-5 i)(3 + i )

How do I write the expression in the standard form a + b I.  ( 9-5 i) (3 + i)  ?

# The rat population in a major metropolitan city is given by the formula n(t)=67e^0.035t where t is measured in years since 1994 and n(t)ismeasured in millions.

What was the rat population in 1994?   What is the rat population going to be in the year 2005?

# For what value of x is the following true? log(x+9)=logx+log9.

For what value of x is the following true?   log(x+9)=logx + log9

# How many coins of each kind are there (full question below)?

A box contains \$6.70 in nickels, dimes, and quarters. There are 39 coins in all, and the sum of the numbers of nickels and dimes is 3 less than the number of quarters. How many coins of each kind...

# graph linear system

how do I graph the linear system us  4x - y = 5 and 4x + 4y = -4?   will it show a reasonableness solution?     I will be using this table as well to help...

# y +5=x 3y=2x solve problem

the larger x of two positive integers is five more than the smaller y. if three times the smaller is the same as two times the larger, find the two integers set with 2 equations an solvw problem...

# rational zeros for f(x)=x^4-4x^3+x^2+16x-20

i dont understand what rational zeros are.

what th anser

# How do you simplify this answer, keeping in mind that we are working with imaginary numbers? (8i)(4i)(-9i)

Do you use a different version of FOIL? Do you just multiply 8x4x(-9)? or do you multiply 8iX4i which equals 32 but then mutliply it by -1 because i^2=-1 so you'd have -32, and then multiply...

# 675 is what percent of 900

i dont have any idea how to do this its for my math hw and its due tomorow plzzzz help

# Why do I fail on tests and not Homework???

I do well on my homework and then not so well on tests... I don't know why. What do I do?