Answer:
Hence, 87,50,000 can be expressed as 
.
Step-by-step explanation:
- Given 87,50,000
- Use given, move the decimal point so that first factor is greater than or equal to 1 but less than 10 .
- Then count n and write in scientific notation.
Step 1 of 1
Consider 87,50,000.
8.75
So, 8.75 lies between 1 & 10 .
Now, Decimal moved to 6 places at left.
So, 
.
Answer:
x=8
Step-by-step explanation:
This is a simple one-step algebraic equation. In algebra, to find x you must isolate the variable. To do this, use the property of equality. This property states that an equation is still true if you do the same thing to both sides. For example, the equation would still be true if you added 1 to both sides.
To isolate x divide both sides by 6. This equals 48/6 = 6x/6. Which simplifies to 8=x.
a. If s(t) is the displacement at time t, then the net displacement over the interval [0, 2] is
∆s = s(2) - s(0) = (2² - 3•2 + 2) - (0² - 3•0 + 2) = -2
The average velocity over this interval is
v [ave] = ∆s/∆t = -2/(2 - 0) = -1
b. Differentiate s with respect to t to get the velocity at time t :
v(t) = ds/dt = 2t - 3
At t = 0, the velocity is v(0) = 2•0 - 3 = -3, so the speed here is 3.
At t= 2, the velocity is v(2) = 2•2 - 3 = 1.
Differentiate again to get the acceleration:
a(t) = dv/dt = 2
so that a(0) = a(2) = 2.
c. The body changes direction when its velocity changes sign. In other words, its moves forward relative to its starting position if v(t) > 0, and backward if v(t) < 0.
The moment of changing direction happens when v(t) = 0. Solve for t :
2t - 3 = 0 ⇒ t = 3/2
