Answer:
They are both correct
Step-by-step explanation:
It's interpretation of the concept. In common practice multiplying by 10 means you add a zero and that's what we teach 10 year olds. But what does adding a zero mean? It means adding a place value and that's what you learn when you are
So in both examples just add a decimal:
2.0 x 10 = 20.
0.2 x 10 = 2.0
In conclusion, it depends on the level of precision required in the discussion and the level of maturity as to who is correct in their examples. If you are teaching 3rd graders math, by all means you add a zero. If you are discussing physics you are shifting over a place value.
Answer:
0.7842857142857143
Step-by-step explanation: i would right an explanation but i cant put it all so you will just have to trust me
Eq1) 2r+2s=50
eq2) 2r-s=17
solve for s in equation2 (eq2)
-s=17-2r
s=-17+2r
Substitute s into equation1 (eq1)
2r+2(-17+2r)=50
2r-34+4r=50
6r-34=50
6r=50+34
6r=84
r=14
Substitute into either equation and solve for s
2(14)-s=17
28-s=17
-s=17-28
-s=-11
s=11
Answer:
x< -11/2
Step-by-step explanation:
Let's solve your inequality step-by-step.
2(4x+1)<3(2x−3)
Step 1: Simplify both sides of the inequality.
8x+2<6x−9
Step 2: Subtract 6x from both sides.
8x+2−6x<6x−9−6x
2x+2<−9
Step 3: Subtract 2 from both sides.
2x+2−2<−9−2
2x<−11
Step 4: Divide both sides by 2.
2x/2<−11/2
x< −11/2
