N= Heidi's marbles
92 - n =18 (Barry's 92 marbles - whatever Heidi has = 18 marbles difference)
92 -n +n = 18 +n (I added n to each side)
92 = 18+n
92 -18 = 18-18 + n (I subtracted 18 from both sides)
74 = n Heidi has 74 marbles
Answer:

Step-by-step explanation:
Given that,
The side length of a square, l = (x+4) inches
We need to find an expression to represent the area of the square.
The area of a square is given by :

So,

So, the area of the square is
.
Answer:
You can multiple it separately
Step-by-step explanation:
1). 347 multiplied by 24 can be done like 347 by 20 and 347 by 4. Then you add them up and get your answer
Answer:
(A) 
Step-by-step explanation:
Slope intercept form of equation of line is 
The standard form of equation is 
Now let 
substituting the value of A and B in slope intercept form,

Answer:30
150
Obtuse
Acute
Adjacent
Step-by-step explanation: