15
Step-by-step explanation:
A negative number being subtracted makes it positive
5 - -10
5+10 =15
The decimal representation of any number is a linear combination of powers of 10. In other words, given a number like 123.456, we can expand it as
for any 
, so the above is the same as
Similarly, we can write
Now it's a question of reducing the fraction as much as possible. We have 
so
<span>If you were asked to express the weight in ounces of a
ladybug in scientific notation, would the exponent of 10 be positive or
negative? Justify your response.</span>
<span>The exponent of 10 would be positive because the weight is
measured and is attributed to a living organism hence, there’s no living
organism measured in a negative value. Unless it was used otherwise. </span>
C^2-64 is a square roots factoring one. you take the square root of c^2 which is c and then the square root of 64 which is 8 or -8 so the answer is (c-8)(c+8). and it is a special product
