B. Standard form
Hope this helps
Answer:
The perimeter of rectangle is 
Step-by-step explanation:
Let
x-----> the length of the rectangle
y----> the width of the rectangle
we know that
----> equation A
---> equation B (area of the constructed figure)
substitute the equation A in equation B

using a graphing tool -----> solve the quadratic equation
see the attached figure
The solution is

Find the value of x
----> 
Find the perimeter of rectangle

The value of 30% of 30 is 9
<h3>How to calculate the percentage of values</h3>
Given the expression
30% of 30
30% can also be written as 30/100 = 0.03
Substitute into the expression
30% of 30
= 0.3 * 30
= 9
Hence the value of 30% of 30 is 9
Larn more on percentages here: brainly.com/question/24304697
Answer:
D. The equator would become warmer, while the poles become colder
Step-by-step explanation:
So the reason in this is actually due to the fact that the ocean currents bring heat from the equator. A study was actually done a bit ago that stated that “Europe would drop 5 to 10 degrees Celcius.“
Source for quote:
https://scied.ucar.edu/learning-zone/climate-change-impacts/melting-arctic-sea-ice-and-ocean-currents
Also this is more of a science question in my opinion LOL.