13.72 minutes or 13 minutes 43.2 seconds
Answer:
3x + 6 or 3( x + 2 )
Step-by-step explanation:
5x - 2x = 3x
4 + 2 = 6
Let
x-----------> the distances measured in miles
<span> Abby method
1)2x
2)2x-20%------> 2x-0.4x
</span>algebraic expression<span>-----> [2x-0.4x]---------> 1.6x
</span> Renato method
1)x/5
2)(x/5)*8-------> 8x/5
algebraic expression----->[8x/5]---------------> 1.6x<span>
Part B)
</span>[2x-0.4x]=[8x/5]---------> 1.6x=8x/5--------> 5*(1.6x)=8x-------> 8x=8x
therefore
<span>the two methods give the same answer
the answer is 1.6x</span>
Answer:
y = -x - 4
Step-by-step explanation:
Determine the slope of y -4 = (x - 6).
To do this, compare:
y -4 = (x - 6)
y - k = m(x - h), where m represents the slope of the line.
Here the slope of the given line is 1.
We want the equation of a line perpendicular to the given line, whose slope is 1. The slope of the perpendicular line is then -1/1, or -1 (think: "negative reciprocal").
Now we're ready to write the desired equation in slope-intercept form y = mx + b:
Since this new line passes through (-2, -2), the following is true:
-2 = (-1)(-2) + b. Thus, b = -4, and the desired equation is then
y = -x - 4
Answer:
Step-by-step explanation:
First, we can make an equation by adding all the ages together and dividing it by the sum of the frequencies.
Now simplify.
We can divide this number by the sum of the frequencies.