step 1 has incorrect justification
Answer:
a and c
Step-by-step explanation:
a: when you divide 12:14 by 2 itll give you half of each number. that equals 6:7
c: when you multiply 12:14 by 2 itll give you twice the amount which is 24:28
9514 1404 393
Answer:
x = 2
Step-by-step explanation:
Using the scale factor, we have ...
x/8 = 0.25/1
x = 8(0.25) . . . . multiply by 8
x = 2
_____
<em>Additional comment</em>
I like to write proportions with the variable in the numerator. That way they are easily solved by a single multiplication. The trick is to get corresponding parts in the same positions. Here, the fractions are written ...
B/A = smaller part / larger part = x/8 = 0.25/1
Hello.
The answer is: X=9/2
Step 1: Add 4 to both sides.
2x−4+4>5+4
2x>9
Step 2: Divide both sides by 2.
2x/2>9/2
X>9/2
Have a nice day
It's a value you should probably memorize:
You can derive it using some trigonometric identities, other known values of cosine, and properties of the cosine function. For example, using the double angle identity for cosine:
If 
, then
and you probably know that 
, so
When we take the square root, we should take the positive root because 
whenever 
:
