Answer:
Below in bold.
Step-by-step explanation:
Height of stack
= 7 * 3/4
= 21/4
= 5 1/4 inches high.
Answer:
3
Step-by-step explanation:
The notation "f(4)" means you put 4 where x is in the algebraic expression, then do the arithmetic.
f(4) = 2·4 -5
= 8 -5
= 3
2n+9+5n=30 combine like terms on left side
7n+9=30 subtract 9 from both sides
7n=21 divide both sides by 7
n=3
Answer:
5.5:1
Step-by-step explanation:
The answer is the middle one.
