Answer:
Step-by-step explanation:
<h3>to understand this</h3><h3>you need to know about:</h3>
<h3>tips and formulas:</h3>
- algebraic identity:(a-b)²=(a+b)²-4ab
<h3>let's solve:</h3>
therefore
using the identity our answer is (a-b)²
let's prove it
- (a-b)²:a²-2ab+b²
- rewrite -2ab as 2ab-4ab:a²+b²+2ab-4ab
- use (a+b)²=a²+2ab+c²:(a+b)²-4ab
therefore
we have also proven that
Answer:
91.2 seconds
Step-by-step explanation:
To solve this problem you first have to figure out how many seconds does it take per meter which is .8 seconds. Then you have to multiply it by 114 so that you can get the answer: 91.2 seconds.
Answer:
Adding another row of dots that are 1 bigger than the last row
The question is really quite easy. You just have to find the distance between the sea level and the point down the water. Make an illustration about the problem to visualize it better. The picture is shown in the attached picture. The distance we want to get is denoted as x. The solution is as follows:
x = 4.7 - 0.5 = 4.2 m
Hope this helps!
Answer:
30
Step-by-step explanation:
Him plus his friend equals 5 and 150/3 is 30
So 150 divided by 5 is 30
