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โˆ™ 2013-01-22 16:01:26
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Algebra

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A polynomial of degree zero is a constant term

The grouping method of factoring can still be used when only some of the terms share a common factor A True B False

The sum or difference of p and q is the of the x-term in the trinomial

A number a power of a variable or a product of the two is a monomial while a polynomial is the of monomials

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Q: X varies directly with y and z x equals 40 when y equals 10 and z equals 20 Find x when y equals 30 and z equals 40?
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Find an equation of variation where y varies directly as x and y equals 8 when x equals 2 find y when x equals 10?

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Find an equation of variation where y varies directly as x and y equals 2 when x equals 10 find y when x equals -25?

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X varies directly with y and inversely with z x equals 0.25 y equals 10 and z equals 20 find x when y is 20 and z is 10?

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X varies directly with y and z x equals 400 when y equals 8 and z equals 10 Find x when y equals 10 and z equals 12?

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What is the constant of variation if y varies directly with x and if y equals 500 when x equals 10?

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If m varies directly as n and inversely as o and m equals 20 when n equals 50 and o equals 10 find m when n equals 96 and o equals 16?

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Find the variation constant and an equation of variation where y varies directly as x and y equals 10 when x equals 37?

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If y varies directly with x and y equals 10 when x equals 5 what is the value of k?

We write y=kx since y varies directly as x. Now we know if x is 5, y is 10. so we write 10=5k so k=2


X varies directly with y and inversely with z x equals 20 when y equals 8 and z equals 4 Find x when y equals 4 and z equals 8?

The answer is x=10. If: x=20 y=8 z=4 then: y=8/2=4 z=4*2=8 since x varies directly with y, meaning whatever happens to y, happens to x, so if y was divided by 2, then x should be divided by 2. After all, the inverse of division is multiplication.


If c varies jointly as f and g and c equals 27 and f equals 18 and g equals 6 find c when f equals 30 and g equals 10?

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If y varies directly as x and y equals fifteen and when x equals 6 find y when x equals 10?

y = x/k so 15 = 6/k making k = 0.4. when x = 10 y = 10/0.4 ie 25 alternatively y/x = k ie 15/6 = k so k = 2.5; y/10 = 2.5 making y = 25.

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