Answer:
roots : 4, -4, i, -i
Step-by-step explanation:
This gets a bit tricky.
We have to substitude x^2 as u in this problem.
Now to rewrite x^4 − 15x^2 − 16 = 0 with u, we get
u^2 - 15u - 16 = 0
( u - 16) (u + 1)
U = 16
U = -1
<em>This is not the end of the problem. </em>
Now we have to substitute x^2 back to u.
x^2 = 16 --> we get the roots 4 and -4
x^2 = -1 --> we get the roots i and -i
tadah!
The are would be 25
and we could make 3 squares. 75
5inches will be left over.
Answer:
Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the 1010. If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.
7.1×1047.1×104
Answer:
remember that you start in the [ ] and work your way out
Step-by-step explanation:
Answer:
600 m.
Step-by-step explanation:
We can use one of the equations of motion under constant acceleration. The one we want here is s = ut + 0.5at^2, where s = distance travelled, u = initial speed, a = acceleration and t = time.
We have: s = 10*10 + 1/2 * 10 * 10^2
= 100 + 500
= 600 m. (answer)
