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enyata [817]
3 years ago
10

Algebra! Please help and explain it.

Mathematics
1 answer:
kenny6666 [7]3 years ago
3 0

Answer:

Part of mathematics in which letters and other symbols are used to represent numbers and quantities in formula and equation   Algebra is one of the broad parts of mathematics, together with number theory, geometry and analysis

Step-by-step explanation:

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3/5x + 1/4y = -1/2 in standard form
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Answer:

\large\boxed{12x+4y=-10}

Step-by-step explanation:

The standard form:

Ax+By=C

A, B and C are the integer.

We have:

\dfrac{3}{5}x+\dfrac{1}{4}y=-\dfrac{1}{2}

Find the common denomintaor of given fractions.

We have 5, 4 and 2. The common denominator of 2, 4 and 5 is 20.

20 = 2 · 10 = 4 · 5 = 5 · 4

Thereofre multiply both sides by 20:

20\!\!\!\!\!\diagup^4\cdot\dfrac{3}{5\!\!\!\!\diagup_1}x+20\!\!\!\!\!\diagup^4\cdot\dfrac{1}{4\!\!\!\!\diagup_1}y=20\!\!\!\!\!\diagup^{10}\cdot\left(-\dfrac{1}{2\!\!\!\!\diagup_1}\right)\\\\(4)(3x)+(5)(1y)=(10)(-1)\\\\12x+4y=-10

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This beach ball has a surface area of 615.44 inches². What is its diameter? Use 3.14 for π.
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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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