I imagine it is C as the distance is 778million km. The closest answer would be 7.2•10^8, and if it were to the power of 9 it would be too large a number to make sense. Hope this helps!
Step-by-step explanation:
Add 9 to both sides of the equation.
if you want to create a trinomial square on the left, find value that is equal to the square of half of b
Add the term to each side of the equation
SIMPLIFY >:(
How to Simplify it:
-Raise the -2 to the power of 2
and ten simplify 9 + (-2)^2 :
--Raise -2 to the power of 2 and then add 9 and 4
Factor the perfect trinomial square into (x - 2)^2
Solve the equation for x
How to do it:
-Take the square root of each side of the equation to set up the solution for x
--Then remove the perfect root factor, x - 2 under the radical to solve for x
---Remove parenthesis
----add 2 to both sides of the equation.
the final answer could be shown in different ways,but the exact form is x=±√13+2
In decimal form its x=5.60555127…,−1.60555127…
--this took me like 7 minutes to do im no geek tho lol
<u>12</u> / <u>12</u> = <u>1</u>
84 / 12 = 7
<em>1/7</em>
Answer: 3.87 * 10^5, or 387000
Step-by-step explanation:
Move the decimal to the left and increase the power.
If you want to have it expanded, move the decimal point to the right 4 times of the original to get 387000.
Answer:
3a-21
Step-by-step explanation:
You multiple 3 with the inside of the parenthesis. 3 time a = 3a and 3 times negative 7 is -21
