Answer:
x=-5
Step-by-step explanation:
25 - 3x = 40
-3x + 25 =40
-3x +25--25=40-25
-3x=15
-3x÷-3=25÷-3
x=-5
C. 6.2g can be combined with -3/8y. This is because they both end in ‘y’.
It's easier then you'd expect it to be. There's no need to convert the fractions so that they all have a common denominator like you'd have to do when adding or subtracting fractions.
Let's take a look at something really simple.

We can multiply the numerators together so 1*2. We can multiply 4*6 to get the denominator.
This means that our fraction becomes
.
Now I'm assuming since you already know how to add fractions you'll know how to simply fractions. So 2/24 will become 1/12.
Try searching it up on Khan Academy to grasp the topic better!
Infinitely many because change of any kind by rotation gives the same cylinder along the axis shown.
Answer:
N=22.815≈23
Step-by-step explanation:
SIN N=19/49
N=\sin^{-1}(\frac{19}{49})
N=sin
N=22.815≈23