Answer:
D
Step-by-step explanation:
Recall that a⟌b means b/a. So, we want to find the expression: 20⟌4 and 4 ÷ 20. By examining, we see that D has those two expressions.
So, the answer is
and we're done!
Answer:
n = r - 2.5
Step-by-step explanation:
We have the following data:
7 4.5
8 5.5
10 7.5
12 9.5
Now, what we will do is what happens if we subtract each one:
7 - 4.5 = 2.5
8 - 5.5 = 2.5
10 - 7.5 = 2.5
12 - 9.5 = 2.5
The difference is always kept constant, therefore the equation would be:
n = r - 2.5
Answer:
see the attachment photo!
The arc mCAD is 288.
Given: DAB and DCB are right angles; <span>BDC = 54°
Required: arc </span><span>mCAD
Solution:
(2 x 54</span>°) + (2 x 54°) + (2 x 36°<span>) = 288
Note: in getting 36</span>°, deduct 54° and 90° (right angle) from 180° (which is the total degrees inside a triangle)
= 180° - 54° - 90°
= 36° - this is the angle CBD or angle ABD
Step-by-step explanation:
I'm not sure what you mean by 'written method' but the sum is 2,654.