could someone help me with math?

Factor the following.   16x^4-81   i got this wrong and i want to learn from my mistake. how to do this?

03/03/16

Why does a quadratic function never have an inverse

Why does a quadratic function never have an inverse? 

03/02/16

at a store 2 bannanas and 2 kiwis cost $7.85. At the same store 5 bannanas and 2 kiwis cost $6.50. How much more does a kiwi cost then a bannana?

I don't even know where to start. I would like help please. I have a test tomorrow and was told this was one of the problems.

03/02/16

if you left new hampshire in an airplane,travel east, flew for two days, where would you end up?

In what location would you end up in after a two day flight traveling east

03/02/16

could someone please help me?

Factor the following.3r^2-12   i thought it was 3r(r-4) but i got it wrong :(

help with word problem

A 13-foot ladder is placed so that it reaches to a point on the wall that is 2 feet higher than twice the distance from the base of the wall to the base of the ladder.   a. How far from the wall... more

could someone help me comprehend this equation?

The product of two consecutive even integers is 80. Find the two integers. Answer in the form of paired points with the lowest of the two integers first.   (________ ,  ________) or (_________ ,... more

02/24/16

How to write in standard form (2,-3), m=0

How do i write in standard form with the given points (2, -3) m=0?

Question is down below... Please show work and answer thanks!

Write the simplest polynomial with zeros of i and square root of 2. 

02/24/16

Write the expression as sline, cosine, or tangent of the angle

Write the expression as sline, cosine, or tangent of the angle sin 130cos50+cos130sin50

02/24/16

Help with maths question

A sphere just fits inside a cube. What is the surface area of the sphere as a percentage of the surface area of the cube? Round answer to nearest percentage.

could someone help me again?

Factor the following by taking out the greatest common factor. Factor the following by taking out the greatest common factor.6z2 +12z+14

Word Problem

NASA launches a rocket at t=0 seconds. Its height, in meters above sea-level, in terms of time is given by h(t)=−4.9t^2+106t+388. For each of these questions, report your answer to the nearest... more

what is the cost and the expression? i really need help please!

The Widget Company sells boxes of widgets by mail order. The company charges a fixed amount for shipping, no matter how many boxes of widgets are ordered. All boxes of widgets are the same size and... more

find the value of all other five trigonometric functions from the given functions sinx=5/13, cosx>0 and cosx=-4/5,sinx>0. thanks!

find the value of all other five trigonometric functions from the given functions sinx=5/13, cosx>0 and cosx=-4/5,sinx>0. thanks!

An investment of $29,000 was made divided into 3 parts for 1 year. Part 1) earned 8%, 2) 6%, 3) 9%. =$2250. Part 1 earned 4x more than part 2.

An investment of $29,000 was made by a business group. The investment was split into three parts and lasted for one year. The first part of the investment earned 8% interest, the second 6%... more

02/16/16

Y=arccos(2x-3)/pi +1

How to find the domain and range.  

Math Application Air Search Problem

A search plane takes off from an airport at 6:00 A.M. and travels due north at 200 miles per hour. A second plane takes off at 6:30 A.M. and travels due east at 170 miles per hour. The planes carry... more

How can I integrate the semicircle: integral from -2 to 2 (-v(4-x^2) +2)dx ? Thanks.

Show steps. Thanks. The answer is 1.717, I believe. I checked using my calculator.

Carl makes $9.75 an hour and owes $875. How many hours must she work to pay her bills and save $500

I don't know how to do this problem 

Need some help with this question

The lengths of three sides of a regular hexagon are (12x+9y) cm, (7x+6y+3) cm and (4x+5y+2) cm. Find,(a) the values of x and y(b) the perimeter of the figure

require number of weighings

12 coins look the same but one of them is heavier.  what is the minimum number of weighings require to find the counterfeit coin? 

Find two consecutive integers

find two consecutive even integers such that the smaller added to two times the larger gives a sum of 16 

02/03/16

Create a rectangle with a perimeter that is half as large as the area

Create a rectangle with a perimeter that is half as large as the area 

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