I^2 = -1
so,
-99 = -1*99 = i^2*99 = 99i^2
Answer:
A numeral is a symbol or name that stands for a number.
Examples: 3, 49 and twelve are all numerals.
So the number is an idea, the numeral is how we write it.
Step-by-step explanation:
I'm not so sure about the first one but I think it's B
and for the second it would be certain because all of the tulips are red.
1) From the picture, we see that we have two vertical angles:

2) Now, because of the<em> "Vertical Angles Postulate"</em> from geometry, we know that angles A and B are equal, so equalling the angles and replacing by their expression from above, we get the following equation in terms of x:

3) We must solve the last equation for x, doing that we find:

Steps to solve the equation
0) We have the equation:

1) We want all the terms with x on one side, and the other on the other one. So we pass the term +3x to the right as -3x:

2) Now we pass the term -10 to the left as +10:

3) We sum the terms on each side:

4) We pass the 3 that multiplies the x on the right, dividing the 60 on the left:

5) Finally we make the division and we get:

Answer
x = 20
Answer:
retrt
Step-by-step explanation:
erterst