X(x+4)
(x+2)^2-4
(x+4)x
Hope this helps.
Answer to the first triangle: 15To solve this we will use the Pythagorean theorem
Pythagorean theorem formula:

Lets do the first triangle.
17 is the hypotenuse, so its going to replace c in the formula.
8 is the height and it is going to replace a in the formula.
a is what we are trying to find, so our b in the equation is going to be the unknown.





now we know that the missing length in the first triangle (a) is 15Can you solve the Other one?
Just comment if you need help on the other one.
Answer:
Step-by-step explanation:
In order to convert 0.0004578, which is in decimal, to scientific notation, all we need to do in this case is to move our decimal point to the right till we arrive at the first number that is not a zero, and then eliminate all the zero.
In this case, we will have to move the decimal point 4 spaces to our right, which would mean our exponent would be negative. The number of decimal spaces we moved to our right would be the value of our exponent, which is -4 in this case.
Thus, we have:

Answer:
C
Step-by-step explanation:
It costs 12 dollars per person so that will be the "slope" of the equation. The base is 100 dollars so that will be the y-intercept. Together it is 12x+100