Scientific notation is used to express very large or very small values.
Numbers in scientific notation are written in the form of
m × 10 to the power of n
For example:
500 is written as 5 x 10^2 where:
500 = 5 x 10 x 10
Now, let's consider 7 x 10^3:
Following the same procedure:
7 x 10^3 = 7 x 10 x 10 x 10 = 7000
The pattern can be written as:
7 x 10^3 = 7 x 10 x 10^2
= 70 x 10^2
= 70 x 10 x 10^1
= 700 x 10
= 7000
Nice to know how long parallelogram is 72 meters :)
It’s 663.48 because if you divide 276.45 by 5 than you get 55.19 and multiply that by 12 and it’s 663.48
<span><span>The total cost of a sandwich, a glass of milk, and an apple is $2.35 What was the price of each, if the sandwich cost twice as much as the milk and the apple cost 90 cents less than the sandwich?
</span><span>
<span>s=cost of the sandwich.
m=s/2
a=s-.9
s + s/2 + s-.9 = 2.35
2s+s+2s-1.8=4.7 Multiply each side by 2.
5s-1.8=4.7
5s=6.5
s=$1.30
m=$.65
a=$.40
</span></span></span>
