Write the equation of the line that has a slope of -5 and a y intercept of 7
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Greetings!
Solve for d.
Distribute the Parenthesis.
Reduce.
Add -2/3 to both sides.
Simplify.
Add -1/4d to both sides.
Simplify.
Divide both sides by -1/12.
Simplify.
Reduce.
Hope this helps.
-Benjamin
Solve for d.
Distribute the Parenthesis.
Reduce.
Add -2/3 to both sides.
Simplify.
Add -1/4d to both sides.
Simplify.
Divide both sides by -1/12.
Simplify.
Reduce.
Hope this helps.
-Benjamin
Let Daniel's age be 'x' years , hence, Lisa's age is (x - 5) years. Let Grandma's age be 'y' = 54 years.
Hence,
x(x - 5) = 2/3 × y
x² - 5x = 2 × 54 years / 3
x² - 5x = 36 years
x² - 5x - 36 = 0
∆ = (-5)² - 4(1)(-36) = 25 + 144 = 169
√∆ = √169 = 13
x1 = (5+13)/2, x2 = (5-13)/2
x1 = 9, x2 = -4
Since, age can't be negative,
Daniel's age = x = 9 years.
Hence,
x(x - 5) = 2/3 × y
x² - 5x = 2 × 54 years / 3
x² - 5x = 36 years
x² - 5x - 36 = 0
∆ = (-5)² - 4(1)(-36) = 25 + 144 = 169
√∆ = √169 = 13
x1 = (5+13)/2, x2 = (5-13)/2
x1 = 9, x2 = -4
Since, age can't be negative,
Daniel's age = x = 9 years.