Yes that is all correct u did a good job
3600 if you multiply 40 to 80<span />
OK. Take it slow and easy, one step at a time.
-- Draw a line from the center of the circle to the left end of the
horizontal chord.
(That point doesn't have an identification letter, but it's the other
end of the '10' from point 'A'.)
-- Since that line is also a radius of the circle, its length is 14.5 .
-- When you drew the line, you made a right triangle inside the circle.
The line you drew is the hypotenuse of the right triangle.
-- You know the length of the hypotenuse (14.5), and you know
the length of one leg (10). So you can calculate the length of the
other leg ... from the center to point 'A'. That leg is √(14.5² - 10²)
-- Now you know the distance from the center of the circle to point 'A'.
The length of AB is (the radius) minus (the leg that you just found).
Seem reasonable ?
I got 4 for AB. But I was working fast and sloppy. You need to check it.
Answer: it’s C
Step-by-step explanation:
Answer:
Step-by-step explanation:
The best way to do this is to first remove the parenthesis by distributing the negative into them. Then we will group the like terms together, moving their respective signs with them, then we will simplify. For the first one, after distributing the negative into the parenthesis (remember that a negative in front of a set of parenthesis containing a polynomial changes the signs in front of each term within the polynomial; negatives become positives and positives become negatives):
and then grouping like terms next to each other:
(this step is not completely necessary; I just encourage new learners to do it so as to not miss any of the like terms)
The above then simplifies to
The next one, after distributing the negative into the parenthesis:
and then grouping like terms next to each other (remember to move their signs with them!):
which simplifies to
Now for the last one:
and
which simplifies to
