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user100 [1]
3 years ago
12

Which expression is equivalent to 9^-2? O-81 O-18 O1/81 O1/18

Mathematics
1 answer:
kherson [118]3 years ago
5 0

Answer:

Option C - 1/81

Step-by-step explanation:

9^(-2) = 1/(9^2) [ Because a^(-m) = 1/(a^m) ]

so, 1/(9²) = 1/81.

Hope this helps you.

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(If I'm wrong please correct me I haven't done this in two years but I believe this is correct) I hope it helped anyway!
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If preimage is (0, 1) . (4, 0), (4, 1) , what are the points after a translation of 3 units up and then a reflection over the -a
yulyashka [42]

Answer:

(0, 4) (-4, 3) (-4, 4)

Step-by-step explanation:

Translation rules:

Units UP - Add to the y-coordinate.

Units DOWN - Subtract from the y-coordinate.

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Units LEFT - Subtract from the x-coordinate.

--------------------------------------------------------------------------------------------------------------

In this case, the word problem is asking for the points after a translation of 3 units up.

(x, y+3)

(0,1) → (0,4)

(4,0) → (4,3)

(4,1) → (4,4)

--------------------------------------------------------------------------------------------------------------Now it's time to reflect the new points over the y-axis.

When reflecting over the y-axis, the y-coordinate remains the same, but the x-coordinate becomes the opposite value. (-x, y)

(0,4) → (0,4)

(4,3) → (-4,3)

(4,4) → (-4,4)

3 0
3 years ago
Find the mean and standard deviation for the set of data. {25,16,28,6,30,7,26,20,22}
anzhelika [568]

Answer: 8.7 the mean is 20

Step-by-step explanation:

   

7 0
2 years ago
Y=squareroot y+6 <br> Answer
Ivanshal [37]
Square root 6 is the answe
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