Thursday
December 12, 2013

# Posts by ALISON

Total # Posts: 281

Math
you plug in -8 for r. I -15- (-8) l + l -8 l l -7 l+ l-8 l since you have absolute value bars anything in absolute value turns positive and you take away the bars. soo....... 7+8 =15

Scientific Notation
For scientific Notation, when expressing the number it cannot be greater then10. You usually put the decimal in the tenths spot such as 1.0, 2.0, 3.0 etc. you would imagine that your decimal is at the end of the number and then move your decimal toward the end. the exponent re...

Trigonometry
You draw a triangle and label all of your given information. so you subtract 90 from 38degree35' to get angle A. then you use SOH CAH TOA tan 38degree35'= b/6.434mi to solve for side b. then use cos38degree35' = 6.434mi/c to solve for side c.

math
A: -1/2= 1/2 #: 4 = 1/4 C: 0=0

How many kilograms of chlorine are in 24 kg of each of the following chlorofuorocarbons (CFCs)? 1) CF2CL2 express answer using two sig figs how would i solve for this problem??? thanks!

Chemistry
you would use 1 Hz =299792458wavelength meters so using that you would convert kHz to Hz, then Hz to meters. for the radio wave in meters then you would continue using the same conversion as the one above and then convert meters to nanometers using 1m= 1X10^-9 nm. for the last...

math
thats correct.

chemistry
you would divide the grams of each molecule produced by the smallest ratio to find the subscripts.

chemistry
empirical formula is the smallest whole number ratio molecular formula is the empirical doubled i believe.

Math
you would do... combine the i"s and the whole numbers together. (8-4)+(-i+i)= 4

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