Hello,
I suppose you want to reduce the expression:
Answer A
3x²-4x²-2x+5x+6+9=-2x²+3x-15
0.1/0.4 converted to a decimal is 0.25 :) hope this helps
The height of the stack is given by the sum of the heights of the boxes:
In order to convert this result in meter, remember that
So, to covert form centimeters to meters we have to multiply by 0.01 (or divide by 100).
Which means that
Answer:
a. standard notation means in the number written in only number digits.
- to convert these multiply the two numbers given. FYI these are given in scientific notation, which is used so that numbers are easier to write.
<u>remember</u>: if the exponent is negative, you have move the decimal to the right. whereas, if the exponent is positive, you have to move the decimal to the left.
3 X 10^-4 --> move 4 places to the right.
answer - table salt: 0.0003
1.2 X 10^-2 --> move 2 places to the right.
answer - rock salt: 0.012
b. we know the standard notation of table salt is 0.003, so we simply multiply 40 by this.
answer - 0.0003 X 40 = 0.012
c. 0.012 = 0.012 (yes)
answer - yes the value i got in part B is equal to the mass of an average grain of rock salt. this shows that the mass of an average table salt is 1/40 times smaller than the mass of an average grain of rock salt.
-<em> i am not sure about the "what does this mean" part. you can put whatever there but i put what i think it could be. i think it would be based on what notes you took on class. </em>