The answer is the third one -2.
Answer:
The product is the difference of squares is 
Step-by-step explanation:
Explanation
- The given expression is (x y-9)(x y+9).
- We have to multiply the given expression.
- Square the first term xy. Square the last term 9 .

Answer:
x = 1
Step-by-step explanation:
Step 1: Write equation
9 - 2x = 7x
Step 2: Solve for <em>x</em>
<u>Add 2x on both sides:</u> 9 = 9x
<u>Divide both sides by 9:</u> x = 1
Step 3: Check
<em>Plug in x to verify it's a solution.</em>
9 - 2(1) = 7(1)
9 - 2 = 7
7 = 7
Answer:
1/7
Step-by-step explanation:
They traveled 5/7 of the distance on Saturday.
That left 2/7 of the distance as the remaining distance.
They traveled half of 2/7 of the distance on Sunday.
1/2 of 2/7 = 1/2 × 2/7 = 2/14 = 1/7
Answer: 1/7
Answer:
500 is greater than or equal to 150 + 5.50x
Step-by-step explanation: