B^2 = what when B = -4
Note: B^2 means B square or B to the second power. The power, in this case 2, tells us how many times to multiply the base B by.
So, B^2 = B • B.
Replace B with -4.
(-4)^2 = (-4)(-4) = 16.
We conclude by saying that B^2 = 16 when B is - 4.
Note: The answer is the same when B is 4.
It's the first choice. If you multiply the first equation by 3, your y term is a +12, and if you multiply the second equation by 4, your y term is a -12. When you add them the y terms cancel each other out.
Answer:
:vvvvvvvvvvvvvvvvvvvvvvvv
Step-by-step explanation:
Answer: 3.886 m/s
Step-by-step explanation:
1 A.
The initial velocity (u) = 10 km/hr or 2.77 m/s
1 B.
The final velocity (v) = 60 km/hr or 16.66 m/s
1 C.
5 seconds.
1D. Acceleration = Final velocity - initial velocity / time
= 16.66 m/s - 2.77 m/s / 5 s
= 3.886 m/s.
Answer:
never
Step-by-step explanation:
let k be the scale ratio of two bodies then according to the question
k = a/b -- (1)
let Sa be the surface area of body A and Sb be the surface area of body B , then
according to the relation of scale factor and surface areas
from the above equation ,
as k = a/b from (1)
therefore
hence the ratio of their surface area is 
