Cindys age = x
Her age before six years = x-6
So, It would be: x = 3(x-6)
In short, Your Answer would be Option B
Hope this helps!
If the ratio of x/y or x/y is always the same constant, then a and y are directly proportional and the constant is called the constant of proportionality.
<span>If the product of xy is always the same constant, then a and y are inversely proportional and the constant is called the constant of proportionality. </span>
<span>unit rates --- are like any rate found by dividing --- like speed --- miles per hour unit means 1 and this is miles traveled in one hour (at constant speed) --- so you just divide --- traveling 100 miles in 2 hours = 50 miles in 1 hour --- 50 miles per hour --- miles/hour <<< that is a unit rate </span>
<span>slope is a rate of change --- on an x-y coordinate axis graph the slope is the rate of change of y compared to a change in x --- this is not necessarily a unit rate ... slope of 2/3 means a change of 2 for y will create a change of 3 for x (not a change of 1, so it is not a unit rate)</span>
Answer:
BC = 28
Step-by-step explanation:
Since the triangle is equilateral then all 3 sides are congruent.
Equate AB and AC and solve for x, that is
12x + 4 = 8x + 12 ( subtract 8x from both sides )
4x + 4 = 12 ( subtract 4 from both sides )
4x = 8 ( divide both sides by 4 )
x = 2, thus
AC = 8x + 12 = (8 × 2) + 12 = 16 + 12 = 28
Since the 3 sides are congruent then BC = 28