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Arte-miy333 [17]
3 years ago
8

If x^2 = 49, then x^-2 =

Mathematics
2 answers:
kenny6666 [7]3 years ago
6 0
-49
When you solve x^2 x=7 because 7x7=49. All that changes in the second equation is there is a negative sign so x^-2=-49
I would recommend if you need help on math like this download Photomath.
Natalija [7]3 years ago
4 0

Answer:

0.001665973

Step-by-step explanation:

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4 0
3 years ago
The answer is A I just need help working it out
nordsb [41]
STU + STR = 180
8x + STR = 180 [ STU = 8x ]
STR = 180 - 8x

STR = SRT [ RS ≈ ST ]

Now, In ΔSRT,
we have, RST = 7x - 54, STR = SRT = 180-8x
Their sum is 180, as it constitutes a triangle.

7x-54 + 2(180-8x) = 180
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5 0
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