Answer:
Two angles are called complementary if their measures add to 90 degrees, and called supplementary if their measures add to 180 degrees. ... For example, a 50-degree angle and a 40-degree angle are complementary; a 60-degree angle and a 120-degree angle are supplementary
Scientific notation means to write the answer in standard form. standard form helps you to express numbers that are too big or too small to be conveniently written in decimal form.
so for this case, it will be 4.571×10^-4.
when the number is decimal, you move the dot to the right and it will always be multiplying 10 to the power of a negative power.
Answer:
graph it
Step-by-step explanation:
<h2>
Greetings!</h2>
Answer:

Step-by-step explanation:
First, we need to add the two fractions together. To do this we need to make the denominator a factor of both 8 and 5. Easy way to do this is to multiply each fraction by the denominator of the other fraction:



We can also show 2 brownies as
or 
Now we can subtract the two:

Simplify the fraction down by dividing by two:

Which is the fraction of brownie left!
<h2>Hope this helps!</h2>