Answer:
C.
Step-by-step explanation:
-3 7/8 rounds down to -4
4.63 rounds up to 5
-4 x 6 + 5
-24 + 5
-19
her answer (-19.14) also rounds to -19
So yes, it is reasonable and the correct response is C.
To achieve balance, the momentum on both sides must be
equal so that it cancels out. Momentum is simply the product of mass and
distance, therefore:
50 pounds * 6 ft = 100 pounds * X
X = 3 ft
Hence B must be placed 3 ft from the pivot.
1. Subtract $18 from $25.
2. Add $50 to that.
3. Subtract the total from $86.
What remains is how much Adison had to begin with.
Robert is a boy, so you only need the formula for a boy’s predicted height.
father’s height=x
fathers height=180
so, x=180
mother’s height=y
mother’s height=160
so, y=160
plug in x=180 and y=160 into the formula.
0.4(x+y)+42
0.4(180+160)+42
use GEMDAS to simplify.
G(Groupings)
0.4(180+160)+42
0.4(340)+42
M(Multiplication)
0.4(340)+42
136+42
A(Addition)
136+42
178
The predicted height of Robert when he is an adult is 178 cm.
Hint: distribute
8 - x + y = -3x + 5
<u> +3x +3x
</u>8+2x+y = 5
<u>-8 -8
</u> 2x+y =-3
A
