|x+5| = 3 |x-5| = 3 Please help NO LINKS
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The equation to represent the relationship of the weights shown on the scale s
The weights are given as:
The total weight on one side, where there are 4 small squares and 3 large squares is:
The total weight on the other side, where there are 2 small squares, 2 large squares and 1 triangle is:
The weight of the triangle is x.
So, we have:
The weights on both sides are equal, because the scale is balanced.
So, we have:
Hence, the equation is
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B = amount invested in B bonds
c = amount invested in CDs
so.. she's got $70000 burning a hole in her pocket and she wants to invest them to get a yield of 5000 in interest from both of them.
we know that, whatever "c" and "b" are, we know that b + c = 70,000.
how much is 13% of b? well, (13/100) * b, or 0.13b
how much is 5% of c? well, (5/100) * a, or 0.05c
we know that, the yield or interest earned from them, must be 5000, thus 0.13b + 0.05c = 5000.
how much did she invest in CDs? well, c = 70000 - b.
c = amount invested in CDs
so.. she's got $70000 burning a hole in her pocket and she wants to invest them to get a yield of 5000 in interest from both of them.
we know that, whatever "c" and "b" are, we know that b + c = 70,000.
how much is 13% of b? well, (13/100) * b, or 0.13b
how much is 5% of c? well, (5/100) * a, or 0.05c
we know that, the yield or interest earned from them, must be 5000, thus 0.13b + 0.05c = 5000.
how much did she invest in CDs? well, c = 70000 - b.