Step-by-step explanation:
(b) If 
then
Note that 
cancel out so we get
Solving for 
we get
(c) I'm not sure what the problem is asking for but here goes. As r doubles, 
becomes
Answer:
8x² - 15y² + xy
Step-by-step explanation:
(4x + 5y) (2x - 3y) + 3xy
multiplying the terms in brackets
(4x) (2x - 3y) + (5y) (2x - 3y) + 3 xy
multiplying with each terms inside the bracket
(4x)(2x) - (4x) (3y) + (5y) (2x) - (5y) (3y) + 3xy
doing the product each of the pair of terms
8x² - 12xy + 10xy - 15y² + 3xy
taking the sum of terms with coefficient "xy"
8x² - 15y² -2xy + 3xy
8x² - 15y² + xy
Answer: The answer is A.|7 + -2 + 5 + - 8|
Step-by-step explanation:
|7−2+5−8|
=|5+5−8|
=|10−8|
=|2|
=2
Answer:
The answer is $0.63 per pound of rice.
Step-by-step explanation:
5 ÷ 8 = 0.625
Convert 0.625 to hundredths place
0.625 = 0.63 = $0.63
