Answer:
D
Step-by-step explanation:
5 - Sqrt 11 + 5 = 1
5 - Sqrt 16 = 1
5 - 4 = 1
(5-9)^2 - [5-9]
=(-4)^2 - [-4]
=(16) + 4
=20
(two negatives=positive)
Answer:
Casey is correct.
Step-by-step explanation:
Robert's 5 1/8 + 2 1/3 = 7 1/2 is wrong because if 5+2 = 7, I would have to change the denominator of both fractions so they are both the same. The denominator would have to be 24. That would make the fractions 3/24 and 8/24. If you added them together, it would not be able to simplify to 1/2.
Casey's -4 1/2 + 6 3/4 = 2 1/4 is correct because —4 - 6 = 2. In order to make the fractions have the same denominator, you would have to multiply -1/2 by 2 on both numerator and denominator wich would equal -2/4. Now add -2/4 and 1/4 and you get 1/4. If my explaining is confusing, I'm sorry!☜(゚ヮ゚☜)
<u>Answer:</u>
<h2>12 ft</h2>
<u>Explanation:</u>
we will use pythagoras theorem
a² + b² = c²
according to the given data we'll assume that
a = 5
c = 13
5²+b²=13²
25+b²=169
b²=169-25
b²=144
b=√144
b=12