A rate is the ratio in two related quantities, and unit rate is the quantity of one for example 1 mile per hour is a unit rate
The weighted average of the numbers -1 and 1, with weight 2/3 on the first number and 1/3 on the second number is 0.33
What is weighted average?
Weighted average is the sum of the two numbers multiplied by their respective weights, in other words, the weighted average can be determined using the below formula :
Weighted average=(first number*its weight)+(second number*its weight)_
weighted average=(1*2/3)+(-1*1/3)
weighted average=0.33
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Neither.
Parallel lines have the same slope.
Perpendicular lines have negative reciprocal slopes.
Rewriting the 2nd equation to solve for y,
You get:
Y=1/5x + 1/2
The first equation slope is negative, and the second is positive. However, the second slope is 1/5, and not 5/1 - which would be the negative reciprocal of (-1/5)from the first equation.
Hope that helps!
Step-by-step explanation:
x² + y² = 153 and y = -4x.
=> x² + (-4x)² = 153
=> x² + 16x² = 153
=> 17x² = 153
=> x² = 9.
