Answer:
The horizontal distance from the plane to SCCA is 
Step-by-step explanation:
Let
x-----> the horizontal distance from the plane to SCCA
we know that
see the attached figure to better understand the problem



We need to find the other base also in order for us to find out what the area of this is.
7-20+3-1*5+3-1-72=
-13 +3-5+2-72=
= - 85
The equivalent number to the given expanded form is 203.403
<u>Step-by-step explanation</u>:
To find the equivalent number of the expanded form, Use BODMAS rule.
B - bracket
O - of
D - division
M - multiplication
A - addition
S - subtraction
In the given equation, look for the BODMAS order to solve the expanded form:
<u>step 1</u>: solve the numbers inside the bracket.
(2*100)+(3*1)+(4*1/10)+(3*1/1000) = 200 + 3 + 4/10 + 3/1000
<u>step 2</u>: In the order of BODMAS, division comes before addition. So, Division has to be given priority and then addition should be performed.
200 + 3 + 0.4 + 0.003 = 203.403
It is 391 because 1+0=1, 9+0=9, and 1+2=3