Check the picture below.
now, notice, for the angle hAC, the hypotenuse is hA, and the adjacent side is CA, therefore,
make sure your calculator is in Degree mode, if you need the angle in degrees.
Answer:
6% of the racers did not ocmplete the marathon
Step-by-step explanation:
290 racers
272 completed the race
15 + 3 = 18 did not complete the race
= 0.94 = 94%
= 0.06 = 6%
This involves quite a lot of arithmetic to do manually.
The first thing you do is to make the first number in row 2 = to 0.
This is done by R2 = -3/2 R1 + R2
so the matrix becomes
( 2 1 1) ( -3 )
( 0 -13/2 3/2) (1/2 )
(5 -1 2) (-2)
Next step is to make the 5 in row 5 = 0
then the -1 must become zero
You aim for the form
( 1 0 0) (x)
(0 1 0) (y)
(0 0 1) ( z)
x , y and z will be the required solutions.
I think the answer is 17, and 13. I think so because 30 divided by 2 is 15 (half), and because he taught one two more days than the other, I added two to one, and subtracted 2 from the other.
Hi there!
j is 7 times greater than 6.
When j is 7 times greater than a number, we get the following equation:
j / 7 = 6
Multiply both sides by 7.
j = 42