Answer:
9...................................
Answer:
D. -3x+3y
Step-by-step explanation:
Start by distributing the -3 to each term in the parentheses:
-3(x)+(-3)(-y)
Here are some multiplication sign rules that will make this problem easier:
- - make a +
- + make a -
+ - make a -
+ + make a +
-3x+3y (note that since both 3 and y are negative, they make a positive)
Step-by-step explanation:
let w be the cost of a bottle of water and p be the cost of a bag of pretzels
"2 bottles of water and 3 bags of pretzels is $7.05" can be written as
2w + 3p = 7.05 ------------- eq.1
"The cost of a bag of pretzels is $1.35" can be written as
p = 1.35 ------------- eq 2
Together, eq 1 and eq 2 make up your system of equations
To solve, take eq 2 and substitute this value int eq 1
2w + 3 (1.35) = 7.05
2w + 4.05 = 7.05
2w = 7.05 - 4.05
2w = 3
w = 1.5
Hence the cost of a bottle of water is $1.50
Answer:
r = 8
Step-by-step explanation:
The common ratio r of a geometric sequence is
r = 
= 
= ..... = 
Then
r = 
= 
= 8
