Hello,
(-5x-3)(-5x+
3) = (-5x)² - 3²
Answer:
d = 12
Step-by-step explanation:
d - 5= 7
( d - 5 ) + 5 = 7 + 5
d - 5 + 5 = 12
d = 12
Answer:
0.31%
Step-by-step explanation:
Just look at the graph my man
<u>Parallel lines</u> are lines that run side-by-side without touching or intersecting!
<u>Perpendicular lines</u> intersect/cross and can also make 90° angles (those little green boxes in the picture) in their corners!
Sets of parallel lines:
Sets of perpendicular lines:
Answer:
n = 61 costumers
Step-by-step explanation:
For calculating the number of costumers he should sample we use the next equation:

Where E is the error that we are prepared to accept, in this case E = 0.15
How we don't know the value of p, we can estimate it like p = 0.5
∝ = 1-0.98 = 0.02
1-∝/2 = 0.99


n = 60.32 costumers
n ≈ 61 costumers