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Answer:
To multiply two numbers in scientific notation, multiply their coefficients and add their exponents. To divide two numbers in scientific notation, divide their coefficients and subtract their exponents. In either case, the answer must be converted to scientific notation.
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Answer:
47
Step-by-step explanation:
Here you go, hope it helps!
We have the isosceles triangle were y + 12 = 3x - 5,
and the equilateral triangle. Therefore 3x - 5 = 5y - 4.
From the first equation and the second equation we have:
y + 12 = 5y - 4 <em>subtract 12 from both sides</em>
y = 5y - 16 <em>subtract 5y from both sides</em>
-4y = -16 <em>divide both sides by (-4)</em>
<h3>y = 4</h3>
Substitute the value of y to the first equation:
4 + 12 = 3x - 5
16 = 3x - 5 <em>add 5 to both sides</em>
21 = 3x <em>divide both sides by 3</em>
<h3>x = 7</h3>
<h3>Answer: x = 7 and y = 4</h3>