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3 years ago

Solve by either substitution or elimination. 2x + 2y = 6 x + y = 4

Mathematics

1 answer:

Westkost [7]3 years ago

7 0

Answer:

No solution

Step-by-step explanation:

If you were to do elimination, both the x and the y would cancel out and get 0=1, which is not true. And if you were to do it as substitution, then it would still get an answer that doesn't make sense.

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Step-by-step explanation:

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3 years ago

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The coordinates of three vertices of a square are (4, 14), (10, 14), and (4,8).

nydimaria [60]

Answer:

I think it’s C

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3 years ago

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At Tech High there are three math teachers, Mary, Tom, and Alex. All students at Tech High take math, with 21% taking class with

galben [10]

Answer:

The probability that a Tech High student fails math is 0.1006

Step-by-step explanation:

21% students are taking class with Mary.

Every year 4% of Mary’s students fail,

15% students are taking class with Tom

Every year 6% of Tom’s students fail.

64% students are taking class with Alex

Every year 13% of Alex's students fail.

Now we are supposed to find the probability that a Tech High student fails math.

$P(\text{Tech High student fails math}) = P(\text{taking class with Mary})\times P(\text{Mary students fail})+P(\text{taking class with Tom}) \times P(\text{Tom students fail})+P(\text{taking class with Alex}) \times P(\text{Alex student fail})$

$P(\text{Tech High student fails math}) = 0.21 \times 0.04+0.15 \times 0.06+0.64 \times 0.13$

$P(\text{Tech High student fails math}) =0.1006$

Hence the probability that a Tech High student fails math is 0.1006

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4 years ago

Evaluate log3 9 for me please Answer choices: 2 3 0.33 0.5

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The answer is letter choice A.

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3 years ago

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