The answer would be C because n is the number of children and it costs $5.50 per child plus an extra design fee of $45
Answer:
2.9875 miles
Step-by-step explanation:
15.7 - 3.75 = 11.95. 11.95 / 4 = 2.9875 miles.
Answer:
400
Step-by-step explanation:
The given expression is
We can write it in radical form, and the denominator of the exponent became the power of the radical. That is
![x^{9/7} = \sqrt[7]{x^9}](https://tex.z-dn.net/?f=x%5E%7B9%2F7%7D%20%3D%20%5Csqrt%5B7%5D%7Bx%5E9%7D)
And
![\sqrt[7]{x^9} = \sqrt[7]{x^7*x^2}](https://tex.z-dn.net/?f=%5Csqrt%5B7%5D%7Bx%5E9%7D%20%3D%20%5Csqrt%5B7%5D%7Bx%5E7%2Ax%5E2%7D)
We can also write it as
![\sqrt[7]{x^7}*\sqrt[7]{x^2} = x \sqrt[7]{x^2}](https://tex.z-dn.net/?f=%5Csqrt%5B7%5D%7Bx%5E7%7D%2A%5Csqrt%5B7%5D%7Bx%5E2%7D%20%3D%20x%20%5Csqrt%5B7%5D%7Bx%5E2%7D)
And that's the simplified form of the given exponential form .
This one is so easy that your brain refuses to accept it.
It's looking for a harder answer, but can't find it !
You're totally correct, as far you went. x² + 2x does = -1
Now add ' 1 ' to each side: x² + 2x + 1 = 0
Can you factor that quadratic ?
Can you mash it through the quadratic formula ?
Actually, it's the simplest possible perfect square.
x² + 2x + 1 = (x + 1)²
So the solutions of x² + 2x + 1 = 0 are both x = -1 .
Don't say anything.
I know it's embarrassing.
