Answer:
8770 feet
Step-by-step explanation:
Add 370 to 8400:
8400 - 370
= 8770 feet
For this case we have the following number:

What we must do is rewrite the number as the product of two numbers.
We have then:

From here, we write the number as the multiplication of a whole number and a power of base ten.
We have then:

Where,
: whole number
: power of base 10
Answer:
The distance written as a whole number multiplied by a power of ten is:

Answer:
2520ft
Step-by-step explanation:
Calculation for what is the scale of the model?
Let x will be the span length
Hence,
x= 4200 feet long/20 inches long
x=210
Thus:
1 inch = 210 ft
1 ft = 2520
=2520ft
Therefore the scale of the model will be 2520ft
Rearrange: 2y = 6 -3x
2y = - 3x + 6
y = -1.5x + 3
Now, substitute, perpendicular lines have the same gradient so:
-1 = -1.5 (2) + c
- 1 = -3 + c
2 = c
equation for new line: y = 1.5x + 2