Question 3: Kimmy and Nicole played a math game at the carnival where they needed to evaluate the following expression: 12 + 36 ÷ (6² ÷ 3²) Kimmy's answer was 21 and Nicole's answer was 12. Who evaluated expression correctly? Then justify your reasoning?
Answers
Answer 1
Answer:
Kimmy was correct! The order of operations, or PEMDAS, says parentheses are first! So in the parentheses you have to either use exponents or division, but exponents are right after parentheses. So then you have 36/9 which is 4! Then you have addition or division, and division comes first! so 36/4 is 9, then that 9 plus the 12 equals 21!
Brian bought two DVDs , one priced at $ 5.56 and the other at $ 11.00 .Sales tax on his purchase was 7 % .How much change should he have received if he paid with a $20 bill?
Answers
If you have an iPhone which I do you can use it’s provided calculator ...I added 11.00 and 5.56 together and I ended up with 16.56 and there’s a % button on it and it does calculations for you.. so I added 7% to the order and it spit out $1.59 then I pressed add and it gave me $17.71 subtract 20.00-17.71 you get $2.29 which is your answer
The length of each of the sides of a pentagon are 4x - 2. Which equation can be used to find p, the perimeter of the pentagon?
Answers
The answer is 5(4x-2). There are 5 sides in a Pentagon so just multiply a side by 5.
If the hypotenuse right angle of a triangle is 17 inches long, one of the legs is 15 inches. Find the length of the other leg
Answers
Use the Pythagorean theorem. a^2+b^2=c^2
15^2+b^2=17^2
225+b^2=289
Subtract 225 from both sides of the equation and you get:
b^2=64
b=8
Susan rode her bike 30 kilometers in 2.5 hour. How fast did she ride her bike in kilometers per hour
Answers
The answer is 12. All you had to do was divide. So, 30 divided by 2.5 equals 12. I hope this helps!
speed= distance : time = 30 : 2.5 = 12
answer: 12 km/h
The points (-3,4) and (5,-2) are on the graph of function f. If function g is the inverse of function f, what pair of points are on function g?
Answers
9,-5 if this is correct
Is 0.9 less than greater than or equal to 0.09
Answers
Hi! 0.9 is greater than 0.09 because 0.9 is 90/100 in fraction while 0.09 is 9/100. 90/100 is 10 times greater than 9/100. Have a good day.