Answer:
No, the student is not correct. The correct expression is 9(n+13).
Step-by-step explanation:
"9 times the sum of a number and 13" means you must multiply 9 by the sum, not just by the number. 9n + 13 would be "the sum of 9 times a number and 13." Slightly different wording.
Step-by-step explanation:
-7(k-8)+2k Use distributive property.
-7k+56+2k Combine like terms.
-5k+56
Mother knows best :)
No. The two lengths 5 and 5 add up to 10; you'd have two sides of length 5 each placed end to end, equaling 10. That'd be represented by segments on a straight line, not a triangle.
Hope you've drawn a picture, so as to understand this better. ;)
Answer:
the last one
Step-by-step explanation:
function is: a relation from a set of inputs to a set of possible outputs where each input (X)is related to exactly one output (Y). Only the last choice satisfies this definition
Answer:
(1.1 , 0.6)
Step-by-step explanation:
midpoint (x , y): ( x+x') /2 , (y+y') / 2
x = (-3.5 + 5.7) / 2 = 2.2 / 2 = 1.1
y = (-2.1 + 3.3) / 2 = 1.2 / 2 = 0.6
