Step-by-step explanation:
(x+2y)(x-2y)
- x^2-2xy+2xy-(2y)^2
- x^2-4y^2
Answer:
Step-by-step explanation:
Yes
Answer:
or 
Step-by-step explanation:
The opposite of 
is 
Convert decimal number −0.75 to fraction 
.
Reduce the fraction to lowest terms by extracting and canceling out 25.
Least common multiple of 4 and 5 is 20. Convert 
and to fractions with denominator 20.
Since 
and 
have the same denominator, add them by adding their numerators.
Add -15 and 8 to get -7
Convert decimal number 0.4 to fraction 
. Reduce the fraction to lowest terms by extracting and canceling out 2.
Least common multiple of 20 and 5 is 20. Convert 
and to fractions with denominator 20.
Since and have the same denominator, add them by adding their numerators.
Add -7 and 8 to get 1.
Least common multiple of 20 and 4 is 20. Convert 
and 
to fractions with denominator 20.
Since and 
have the same denominator, subtract them by subtracting their numerators.
Subtract 15 from 1 to get -14.
Reduce the fraction 
to lowest terms by extracting and canceling out 2.
or
Hope this helps! Brainliest would be much appreciated! Have a great day! :)
Well, in the first one, 2 degrees below zero is -2 degrees, and then it says that it dropped 14 degrees, which means it dropped -14 degrees, so to know the total amount it dropped you would just have to add -2 plus -14 which is -16 degrees, so your answer for the first question would be the last answer, -16 degrees.
For the second question, just know that whenever a negative number is BY ITSELF in parentheses, that means it is used like a positive number in the equation. So (-12) automatically becomes 12. Now, since the problem is asking for a SUM, (the answer to an ADDITION problem; when you add instead of subtract), you would turn that minus symbol to a plus symbol, and add normally to get your final answer; 30 + 12 = 42. To check if this is correct, just type in <span>30 – (–12) to a calculator and you'll get the same answer! :D
Hope this helps! :3</span>
Answer:
80 m/s
Step-by-step explanation:
