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3 years ago

Solve the system by the elimination method.. 2a + 3b = 6 5a + 2b - 4 = 0

Mathematics

1 answer:

VashaNatasha [74]3 years ago

8 0

Answer:

34a

Step-by-step explanation:

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What is 12% of 75? =)))

ankoles [38]

Answer:

Hope this helps!

Step-by-step explanation:

12% of 75 would be 9

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3 years ago

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Todd is saving for a vacation. The cost of his vacation is $1,089. Todd has a year to save the money. About how much does he nee

Lilit [14]

90.75

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3 years ago

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√5•√80<br><br> Show your steps pls ty

kykrilka [37]

Answer:

Step-by-step explanation:

Using the rule of radicals

$\sqrt{a}$ × $\sqrt{b}$ ⇔ $\sqrt{ab}$

Given

$\sqrt{5}$ × $\sqrt{80}$

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3 years ago

Mrs. Davis brought 16 pencils to her classroom

DENIUS [597]

Answer:

Step-by-step explanation:

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3 years ago

Use the properties of logarithms to expand the following expression as much as possible. Simplify any numerical expressions that

sweet [91]

Answer:

$f(x,y) = \log_{4} (x-5-\sqrt{25-6\cdot y})+\log_{4} (x-5+\sqrt{25-6\cdot y})$

Step-by-step explanation:

Let be $f(x,y) = \log_{4}(2\cdot x^{2}-20\cdot x +12\cdot y)$ , this expression is simplified by algebraic and trascendental means. As first step, the second order polynomial is simplified. Its roots are determined by the Quadratic Formula, that is to say:

$r_{1,2} = \frac{20\pm \sqrt{(-20)^{2}-4\cdot (2)\cdot (12\cdot y)}}{2\cdot (2)}$

$r_{1,2} = 5\pm \sqrt{25-6\cdot y}$

The polynomial in factorized form is:

$(x-5-\sqrt{25-6\cdot y})\cdot (x-5+\sqrt{25-6\cdot y})$

The function can be rewritten and simplified as follows:

$f(x,y) = \log_{4} [(x-5-\sqrt{25-6\cdot y})\cdot (x-5+\sqrt{25-6\cdot y})]$

$f(x,y) = \log_{4} (x-5-\sqrt{25-6\cdot y})+\log_{4} (x-5+\sqrt{25-6\cdot y})$

3 0

3 years ago