Answer:
The required equation is 
.
Step-by-step explanation:
The equation of line cd is
Slope intercept form of a line is
Where, m is slope and b is y-intercept.
Slope of line cd is 3.
The product of slopes of two perpendicular lines is -1.
Therefore slope of perpendicular line is 
.
Point slope form of a line is
Slope of perpendicular line is and line passing through the point (3,1).
Therefore the required equation is .
Answer:
She decreased her running time at a rate of 16.67%
Step-by-step explanation:
In this question, we are asked basically to calculate the percentage decrease in Abby’s running time.
Mathematically, the percentage decrease equals: (new running time - old running time)/old running time * 100%
We input the values and proceed as follows:
Percentage decrease = (10-12)/12 * 100
-2/12 * 100/1 = -1/6 * 100 = -16.67%
Since it’s a decrease, we just simply say that her running time decrease by 16.67%
"at least " means her score has to be more or equal 94
94≤(85+91+x)/3
it looks like correct answer is e.
Answer:
30°
Step-by-step explanation:
130+20=150
180-150= 30
Answer for #12 Is Length = 630FT & Width 335 FT
Answer for #13 is 4600 Items & 7800 Items. I have this workbook with the same problems :) Hope this helped :)
