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Hunter-Best [27]
3 years ago
11

Solve the system of linear equations by elimination. 12x−7y=−2 8x+11y=30

Mathematics
1 answer:
stellarik [79]3 years ago
6 0

Answer:

x=1

y=2

Step-by-step explanation:

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Find all the natural numbers, which when divided by 7, leave the same number for the quotient and the remainder.
Anna11 [10]

Answer:

8,16,24,32,48

Step-by-step explanation:

When dividing a number by 7, only 7 different remainders are possible.

The remainders when dividing by 7 can not exceed 6, so the numbers in which we are interested can be represented as 7k+k or just 8k, where k=1, 2, ... , 6.

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4 years ago
Simplify the radical expression.
tresset_1 [31]

To simplify this fraction, multiply the entire fraction by the conjugate of the denominator. The conjugate of a square root and a number being added to it would be the number <em>subtracted </em>from the square root. In other words, the conjugate of \sqrt{a} + b would be\sqrt{a} - b.


Applying that information to our fraction shown here, the conjugate of the denominator would be \sqrt{3} - 4. We will multiply both the numerator and denominator of our original fraction by this expression to obtain our answer, as shown below.


\Big(\dfrac{1}{\sqrt{3} + 4}\Big)\Big(\dfrac{\sqrt{3} - 4}{\sqrt{3} - 4}\Big)

\dfrac{\sqrt{3} - 4}{3 - 16}

\dfrac{4 - \sqrt{3}}{13}


Our answer is \boxed{\dfrac{4 - \sqrt{3}}{13}}.


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I need help and it’s due soon
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Answer:

Point A

Step-by-step explanation:

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Answer:

1, 2, 4, 11, 22, 44.

Step-by-step explanation:

Hope this helps :)

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