How many solutions does this
2 answers:
<h3>Answer:</h3>
D)
<h3>Step-by-step explanation:</h3>Given equation:
To simplify this equation, we need to isolate the variables on one side of the equation and the constants on the other side of the equation. To do this, we can <u>simplify the R.H.S</u> as like terms can subtract.
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Since both sides of the equation are the same, this system of equations has infinite solutions.
<h3 /><h3>Check:</h3>We can check our answer by substituting the value of "s" into the equation. As a result, you will see that many values of "s" are satisfying the equation. Thus, Option D is correct.
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He invested "a" at 3% and "b" at 5%
now, he invested 100 more in "b", so, whatever "a" may be, b = a + 100
now, how much is the interest yield of each? well
how much is 3% of a? well, (3/100) * a, or 0.03a
and 5% of b? well (5/100) * b, or 0.05b
now, we know the total yield was 53 bucks, thus 0.03a + 0.05b = 53
thus
solve for "a", to see how much was invested at 3%
what about "b"? well, b = a + 100
now, he invested 100 more in "b", so, whatever "a" may be, b = a + 100
now, how much is the interest yield of each? well
how much is 3% of a? well, (3/100) * a, or 0.03a
and 5% of b? well (5/100) * b, or 0.05b
now, we know the total yield was 53 bucks, thus 0.03a + 0.05b = 53
thus
solve for "a", to see how much was invested at 3%
what about "b"? well, b = a + 100