Answer:
63n + 54
Step-by-step explanation:
9(6+7n)
First you have to multiply 6 and 9 which gives you 54. Then you’ll have to multiply 7n and 9 which equals to 63n. Whenever you see expressions like that, make sure to multiply both numbers inside the parentheses by what’s outside the parentheses. (Well, that method is mainly done like that if there’s one number outside the parentheses—like the expression you’ve provided.)
Answer:
11 must be squared.
Step-by-step explanation:
Answer:
730
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
Isoceles triangle
Work: 5,5,5,10,20
Add
5+5+5+10+20
10+5+10+20
15+10+20
25+20
45
÷ by the amount of numbers
45÷5=9
Ansser: mean=9
