Pythagorean Theorem: A^2 + B^2 = C^2
<span>We know A and C, let's find B by doing it backwards </span>
<span>C^2 - A^2 = B^2 </span>
<span>4^2 - 7 (square root of 7 squared is just 7) = B^2 </span>
<span>16 - 7 = B^2 </span>
<span>9 = B^2 </span>
The percentage decrease is I think is 4 didn't get A's. I don't know if it's right.
Question 2: D
Question 1: C
Question 3: B
Question 4: C
3x - 2y = 6
-2y = -3x + 6
y = 3/2x - 3.....the slope here is 3/2. A parallel line will have the same slope.
so ur answer is : y = 3/2x + 4...because the slope here is 3/2
