10/11/12

#### how do i go about solving a trig identity; that simplify s 1-sin^2 theta/1-cos theta

i know that sin^2 theta=1-cos^2 theta, but how do i express 1-cos theta, how do i simplify

10/11/12

#### what two numbers form 8 as the greatest common factor

on my sheet it says what set of numbers form 8 as the greatest common factor

10/11/12

#### Write an expression to model the following situation: Lisa and Tom are baking cookies for the annual bake sale. Lisa has baked 66 cookies, and Tom has baked 126

Algerbra 1. I in the 9th Grade and I AmHaving Somtrouble With These Kind Of Questions. Operations With Real Numbers.

10/11/12

#### frequency and kinetic energy.

A) The minimum frequency of light needed to eject electrons from a metal is called the threshold frequency, ν0. Find the minimum energy needed to eject electrons from a metal with a threshold...
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10/11/12

#### At 1 atm, how much energy is required to heat 83.0 g of H2O(s) at –18.0 °C to H2O(g) at 169.0 °C?

At 1 atm, how much energy is required to heat 83.0 g of H2O(s) at –18.0 °C to H2O(g) at 169.0 °C?
Where do I begin?

10/11/12

#### Specific Heat

Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 4.00 MJ of energy (in the form of heat) if the temperature of the sodium is...
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10/10/12

#### How many photons are produced?

How many photons are produced in a laser pulse of 0.528 J at 679 nm?

10/10/12

#### how do you solve the inequality (x+1)/(2-x)>2

as of right now i have the equation set equal to zero. but i am stuck and i am not sure how to continue on.
this is what i have:
((x+1)/(2-x))-2=0

10/10/12

#### i need your help

Hi can you help me with this math problem? It is 2p=kx-q and we are solving for x

10/10/12

#### What is the distributive property, and how do I apply it to my equations?

I'm in an Algbra 1 class and got a graded homework assignment on the distributive property. What is it, exactly? And how do I apply it? Example of a problem: 15w+(-w)+5

10/10/12

#### if we know a quotient and a remainder, how do we find the divisor and divided numbers?

quotient 22, remainder 12
divisor is greater than remainder, right?
is there a formula??

10/10/12

#### (4-16) (-8) =

Use the distributive property to evaluate the equation.
I know how to do D.P. but this question confused me! Help me, please!

10/09/12

#### amt invested 25,000 @ 6% for 1 year and 25,000 @ 9% for 1 year, how much was invested @ each rate if the total annual percentage from both investments was 2070?

There are no other details to add.

10/09/12

#### there are 2 neon signs both of them blink as they are on the green sign blinks every 9 seconds the pink sign blinks every 15 secs

If the green sign blinks every 9 seconds and the pink sign blinks every 15 seconds how many seconds will they blink together
im really having a hard time coming up with this answer can u show me...
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10/09/12

#### algebra word problem

Find out how much Grace earned if she earned $27 more than Robert and Alexis combined. Alexis worked 3 hours more than Robert and 7 hours less than Grace.
Robert earned $7.50/hr, Alexis earned...
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10/09/12

#### list the multiples of 8 and 12 up until 100

list the multiples of each pair of numbers up until 100 then cirle the least common multiple
a 8-12
b 9-10

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