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mel-nik [20]
3 years ago
15

A. 6x^2+6y^2= 144

Mathematics
1 answer:
ra1l [238]3 years ago
4 0
B is the answer to the problem.
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Perform the operation.<br> (9x2 + 6x – 7) + (-9x - 5)<br><br> PLS HELP ASAP PLS
qaws [65]

Answer:

21

Step-by-step explanation:

(9x2 + 6x – 7) + (-9x - 5) = 21

6 0
3 years ago
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(2.1 X 10^9) - (9.7 x 10^7) =<br> What does this equal
andriy [413]
I think 2003000000 is the answer
5 0
3 years ago
3
tensa zangetsu [6.8K]

Answer:

literally at this point i think its (D)

Step-by-step explanation:

5 0
3 years ago
The security system in a house has two units that set off an alarm when motion is detected. Neither one is entirely reliable, bu
Mariulka [41]

Answer:

Probability that detector B goes off is '0.615'

Step-by-step explanation:

Given that:

1) Probability that detector A goes off and detector B does not go off is 0.25.

2)Probability that detector A does not go off is 0.35.

3)Probability that detector A  goes off is (1-0.35)=0.65

Assuming that

Probability that detector B goes off is 'p' Hence the probability that detector B does not goes off  is (1-p)

Thus the probability that detector A goes off and detector B does not go off is  product of the individual probabilities

P(E)=0.65\times (1-p)\\\\0.65\times (1-p)=0.25\\\\0.65-0.65p=0.25\\\\0.65-0.25=0.65p\\\\\therefore p=\frac{0.40}{0.65}=0.615

Probability that detector B goes off is '0.615'

5 0
3 years ago
20 POINTS <br> Can someone please explain what I did wrong?
mr_godi [17]

Your diagram is correct.

I would have however written the Given as stated

Given :

XB≅XA≅AY≅YB ( If they are equidistant then they are all the same distance, thus the values will all be equal)

Prove:

<x≅<b≅<y≅<a (this is because a square is formed) < is angle

XM≅YM≅AM≅MB (The fact that the previous statements are true means that this is a square, if M is the midpoint than all these segments are equal)

MX≅MY

Im not sure what you did wrong besides maybe you didn't prove it well enough, everything is correct that you have written. I cant read the pen but it looks like you were missing a step.


3 0
3 years ago
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