Answer:
Step-by-step explanation:
note : (ax)' = a
(b)' = 0
f(x) = x-5. so : f'(x) = 1
Answer:
21) x = 0
23) x = 7
Step-by-step explanation:
In a parallelogram, the opposite sides are congruent. Using this fact, we can create equations for both problems.
21)

Subtract 18.

Divide by 2.

23)

Add 3.

Divide by 2.

-8x-8y=0 (divide both sides by -8, you get:) x+y=0, x=-y
-8x2y=-20 (divide both sides by -16:) xy=20/16=5/4
plug the first simplified equation into the second one,
-y²=5/4...This does not have a solution, are you sure you typed the second equation correctly?
Equation:
30/25.5 = 60/51 ---> 1.176 = 1.176
Answer: The two ice hockey rinks are similar.
Answer:
10
Step-by-step explanation:
15 divided by 3 is 5, and 5 times 2 is 10 :)