We know that root 2 is irrational, but root 2 times root 2 is 2, which is rational.
Hope this helped!!!
Answer:
<em>b = 12 cm</em>
Step-by-step explanation:
<u>The Pythagora's Theorem</u>
The area of a square of side length x is

We have three squares, two of which have side lengths of a=5 cm and b= 13 cm.
The combined area of the smaller squares is the same as the area of the largest square. We cannot say at first sight which square is the largest, we'll assume the square of side length of 13 cm is the largest one. Thus:

Where b is the unknown side length.
The above expression corresponds to the Pythagora's Theorem formula. Solving for b:


b = 12 cm
Equation: <span>3b+4b^2-a^3
Given: </span><span>a=3 & b=-5
Plug 3 in for (a) and -5 in for (b):
</span><span>3(-5)+4(-5)^2-(3)^3
</span>
Now follow PEMDAS:
<span>3(-5) + 4(-5)^2 - (3)^3
</span>-15 + 4(-5)^2 - (3)^3
-15 + 100 - (3)^3
-15 + 100 - 27
85 - 27
58
the asnwer is 58.
Answer:
4.5
Step-by-step explanation:
Well, she runs 3
miles in 28 minutes.
42
=
28
⋅
1.5
So, her journey would just be running
1.5
times, with each time running
28
minutes.
So, she runs a total of
1.5
⋅
3
=
4.5
miles
Answer:
225 square cm
Step-by-step explanation: