<h3>
Answer: the fraction 1/9</h3>
It is approximately equal to 0.1111
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To get this answer, we use the rule
![x^{-k} = \frac{1}{x^k}](https://tex.z-dn.net/?f=x%5E%7B-k%7D%20%3D%20%5Cfrac%7B1%7D%7Bx%5Ek%7D)
The negative exponent tells us to apply the reciprocal to get the exponent to be positive.
So,
![(-3)^{-2} = \frac{1}{(-3)^2}\\\\(-3)^{-2} = \frac{1}{9}](https://tex.z-dn.net/?f=%28-3%29%5E%7B-2%7D%20%3D%20%5Cfrac%7B1%7D%7B%28-3%29%5E2%7D%5C%5C%5C%5C%28-3%29%5E%7B-2%7D%20%3D%20%5Cfrac%7B1%7D%7B9%7D)
Squaring -3 means you square the negative as well
![(-3)^2 = (-3)*(-3) = 9](https://tex.z-dn.net/?f=%28-3%29%5E2%20%3D%20%28-3%29%2A%28-3%29%20%3D%209)
Answer:
2 2/35 hours
Step-by-step explanation:
In 1 hour, the total amount of the house that is painted is ...
1/8 + 1/4 + 1/9 = 35/72 . . . of a house
We need to multiply the time (1 hour) by 72/35 to find the number of hours required for one entire house:
72/35(1 h) = 2 2/35 h
It would take them 2 2/35 hours to paint the house working together.
Answer:
430 words per minutes because we divide 1720 by 40 to get the number of words for a singular minute.
Hope this helped and brainliest please
One ratio is 30:40 since 15 times 2 is 30 and 20 times 2 is 40.