Answer:
A. a + b = 180 is the correct option.
Answer:
Step-by-step explanation:
1/2(13-5)+(4+8)^2
A. 148
B. 144
C. 20
D. 16
We must follow "PEMDAS" order of operations rules. Anything inside parentheses must be done first, followed by exponentiation, multiplication and division, and finally additionl and subtraction.
1/2(13-5)+(4+8)^2 has three sets of parentheses enclosing mathematical expressions: (1/2), (13 - 5) and (4 + 8). These evaluate to:
1/2, 8, 12
and so we now have (1/2)(8) + (12)^2
Exponentiation is next. We get: (1/2)(8) + 144
Next is multiplication: 4 + 144
Last is addition: 148
Answer A is correct: 148
8 x 9+4^2-(63/7)
is evaluated in the same way:
8 x 9+4^2-(9), followed by exponentiation:
8*9 + 16 - 9, followed by multiplication:
72 + 16 - 9 = 79 (Answer C)
D. 3 pages are edited every 5 minutes
Answer:
11 2/9.
Step-by-step explanation:
1 8/9 + 9 1/3
= (1 + 9) + (8/9 + 1/3)
= 10 + (8/9 + 1/3)
8/9 + 1/3:
LCD of 3 and 9 is 9 so we have:
8/9 + 3/9 = 11/9
11/9 = 1 2/9
Answer = 10 + 1 2/9
= 11 2/9.
Answer:
<em><u>12</u></em> Hours went by
Step-by-step explanation:
<em>30 - 18 = 12 </em>
<em>12 = 12/1 </em>
Fraction answer: <u>12/1</u>
