Answer:

Step-by-step explanation:
The formula for cos θ is a/r. A is the first number (10) and b is the second number (6). R is the hypoteneuse which can be found through r =
.
In the equation you'd write that as r =
which can be simplified to
.
You end up with
and you simplify this by doing
, ending with the result of
.
(I also got this answer right on the test.)
Answer:
A
Step-by-step explanation:
If im wrong please correct me.
The answer is -7
2x-3(x+4)=-5
Multiply by -3
2x-3x-12=-5
Collect like terms
-x-12=-5
Move constant to the right to change its sign
-x=-5+12
Add
-x=7
Change the signs
x=-7
Answer:12
Step-by-step explanation:
it’s 12 because 4 x 3 = 12