Break the number apart into hundreds, tens, ones, etc. and add the quantities together. Here is an example:
<em>To write 256 in expanded form, break it apart. There is 200, 50, and 6 in 250. Now, add them together. 200 + 50 + 6 = 256</em>
Work out 6% of $42 which equals to $2.52. The work out what 20% of $42 which is $8.40. Finally add the $8.40 and $2.52 onto $42 to give you your answer of $52.92
Answer:
70
Length x width x depth (cuboid)
5x7x2
The answer is : 24
You must do 3 x 8 to get your answer
The key to solving this problem is recognizing it is a proportion and can be solved using the technique called cross-multiplication. This m<span>eans that you are multiplying the numerator of each side by the denominator of the other side.</span>
You multiply the numerator of the first side by the denominator of the second and the denominator of the first by the numerator of the second.
Simplify.
Factor.
Set each factor equal to zero and solve for x.
Finally, you want to look at the original expression and make sure that these solutions don't violate any restrictions on division by zero.
For the right side, we see that
≠
, so
≠
. For the left side, we see that
≠
, so
<span>≠ </span>
. This means our solutions are valid.
x = -9/4, x = 1