Answer: 0
Step-by-step explanation:
To find the slope, you would need to use the formula
.

The slope is 0, meaning the line is horizontal.
14 + 28 + 42 + 56 + … 280
= 14 (1 + 2 + 3 + 4 + … + 20)
= 14 × 20 × 21 / 2
= 2940
where we use the well-known identity,

<h2>
Answer:</h2>
A=12in²
Step-by-step explanation:
b Base 8in
hb Height 3in
A=hbb
2=3·8
2=12in²
The second one should be correct
So a mile has 5280 feet.
21,129/5280= 4 mph
multiply
4 x 2 = 8 miles in 2 hours