$\frac{x^a}{x^b}=x^{a-b} \\ x^{-a}= \frac{1}{x^a} \\ \\ \\ \frac{10^{-9}}{10^{-3}} =10^{-9-(-3)}=10^{-9+3}=10^{-6}= \frac{1}{10^6} = \frac{1}{1000000} =0,000001$

8 0

3 years ago

Solve for x. have to turn in by tomorrow !

Elanso [62]

To solve this problem you must apply a theorem called: Intersecting secant theorem. The proccedure is shown below:

1) For the figure shown on the left:

(5)(x+5)=(6)(4+6)
5x+25=60
5x=60-25
x=35/5
x=7

2) For the figure shown on the right:

(3)(3+5)=(4)(x+4)
24=4x+16
24-16=4x
8=4x
8/4=x
x=2

7 0

3 years ago

Please help with khan academy!

sergiy2304 [10]

Answer:

Let's imagine the image of the zoo.

The diameter is basically the length of the circle.

The penguin swam the radius.

To find the radius, we need to divide the diameter by 2.

The diameter is 20 meters.

20 $\div$ 2 = 10 meters.

2 x pi x 10 = 62.83185307

62.83185307/2 = 31.41592654

Answer = 31.41592654

6 0

3 years ago

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