Answer:
y = - x² - 4x - 9
Step-by-step explanation:
Given
y = - (x + 2)² - 5 ← expand (x + 2)² using FOIL
= - (x² + 4x + 4) - 5 ← distribute parenthesis by - 1
= - x² - 4x - 4 - 5 ← collect like terms
= - x² - 4x - 9 ← in standard form
Answer:
4000m
Step-by-step explanation:
km to m --> multiply by 1000
4km * 1000 = 4000m
48.33%
Explanation:
Simple way to find percentages of two numbers, is to make it into a fraction.
58/120 then divide 58 by 120.
You can also multiply 58•100 then divide by 120 to get it in a percentage without having to convert.
Which is .4833(33)
Or 48.33%
Hope this helps!