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Bezzdna [24]
3 years ago
11

Based on your answers to parts a and d, does the special sales training program seem to have been effective? Explain your answer

.
Mathematics
1 answer:
kirill [66]3 years ago
4 0
What????????????????????????
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Distance between parallel lines y=3x+10 and y=3x-20
Alecsey [184]

1. Take an arbitrary point that lies on the first line y=3x+10. Let x=0, then y=10 and point has coordinates (0,10).


2. Use formula d=\dfrac{|Ax_0+By_0+C|}{\sqrt{A^2+B^2}} to find the distance from point (x_0,y_0) to the line Ax+By+C=0.


The second line has equation y=3x-20, that is 3x-y-20=0. By the previous formula the distance from the point (0,10) to the line 3x-y-20=0 is:

d=\dfrac{|3\cdot 0-10-20|}{\sqrt{3^2+(-1)^2}}=\dfrac{30}{\sqrt{10}}=3\sqrt{10}.


3. Since lines y=3x+10 and y=3x-20 are parallel, then the distance between these lines are the same as the distance from an arbitrary point from the first line to the second line.


Answer: d=3\sqrt{10}.

4 0
3 years ago
Find the sum of 0.2126 and 0.7145 correct to 3 significant figures​
Afina-wow [57]

Answer:

0.927

Step-by-step explanation:

add then round the last digit (it doesnt matter if it is a decimal number or not).

3 0
2 years ago
What is the standard form of the equation of the circle to the right?​
olga_2 [115]
Use y=Mx+B plug in correct spot
3 0
3 years ago
Lucy wants to make a different types of cheesecake it's cheesecake uses 2/3 pound of cream cheese she has 2 lb of cream cheese h
slava [35]

3 would be your answer

4 0
3 years ago
Which expression is equivalent to square root 25x^9
tekilochka [14]
√((25x^9y^3)/(64x^6y^11))  doing the normal division within the radical

√((25x^3)/(64y^8)  then looking at the squares within the radical...

√((5^2*x^2*x)/(8^2*y^8))  now we can move out the perfect squares...

(5x/(8y^4))√x

So it is the bottom answer...
3 0
3 years ago
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