Answer:
C
Step-by-step explanation:
you are adding
If you're trying to find the measurement of angle s then it'd be 2x degrees, since it's twice that of angle y, which is x degrees.
-3x + y - 2z = 10 |* -1
3x - y +2z = -10
5x -2y -2z = 12
--------------------------- I add these equations term by term
8x - 3y = 2
-3x + y - 2z =10 ⇒ -3x + y - 2z =10
x -y +z = 23 | *2 2x - 2y + 2z = 46
----------------------------- I add these eq.
-x -y = 56
8x - 3y = 2
-x -y = 56
this is the system after i reduce it ( it has only two variables x and y)
Answer:
A fraction is essentially division, so 3/5 is the same as 3 ÷ 5
3÷5 = 0.6
(imagine the square root is the divsion thing)
5 cannot go into 3 so the answer is a decimal
then add a zero at the end of 3 to make 30
0.
and 5 can go into 30, 6 times so you add a 6 to make 0.6
0.6
1: Look at the 4, its a lot easier to multiply 5 x 5 rather than 5 x 4, plus if you are estimating, you are going to round either up or down.
2: Multiply 5 x 5 // the answer is 25.
3: Multiply 5 x 4 (the original) // which is 20.
