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Luda [366]
3 years ago
7

Use the given conditions to write an equation for the line in​ point-slope form and in​ slope-intercept form.

Mathematics
1 answer:
ohaa [14]3 years ago
3 0
Knowing that the line is parallel to another one with equation y = -2x+3, we know that the slope of this line (m) is -2. Plugging this into the point-slope equation
(y-b=m(x-a)), we get y+3=-2(x+4) as our answer. 
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Two trains are traveling towards each other at a constant speed. The trains are currently 714 miles from each other. The speeds
shutvik [7]
55mph.

you can solve it using the equation distance=speed x time

your total distance is 714, and you have 2 trains, one traveling some speed, x, and one traveling x+8, both traveling for 7 hours. 
your equation would look like this
714 = x(7) + (x+8)(7)
and you can then solve for x, which would be 47. this is the speed of the slower train, but 47+8=55 with give you the speed of the faster train. 
6 0
3 years ago
I need help with this please!!
Wewaii [24]

Answer:

-5 would Be your answer

Step-by-step explanation:

5 0
2 years ago
Use completing the square to solve the equation x2 - 10x = -8.
Kay [80]

Answer:

x^2 - 10x + 25 = 17

Step-by-step explanation:

Please use " ^ " to denote exponentation:

x^2 - 10x = -8

x^2 - 10x + 25 = 17

x^2 - 10x + 25 = -8

x^2 - 10x - 25 = -33

Begin with x^2 - 10x = -8.  Here's the process for completing the square:

1.  Take half of the coefficient of x and square the result:

    (1/2)(-10) = -5, and then (-5)^2 = + 25

2.  Add this 25 to the first two terms of x^2 - 10x = -8 and also to the      constant -8:    x^2 - 10x + 25 = -8 + 25, or     x^2 - 10x + 25 = 17

3.  Match this result to one of the given possible answers.  Turns out that the given possible answer matching our result is the first one:

x^2 - 10x + 25 = 17

     

7 0
3 years ago
If Susie is 14, what was her age x years ago?<br><br> A.) x - 14<br> B.) 14 - x<br> C.) 14x
Cerrena [4.2K]
Susie's age from x years ago would be the difference of her current age and the numbers of years that passed which is x. The expression that best represent her age x years ago is 14 - x. Thus, the answer is letter "B. 14 - x". 
4 0
3 years ago
Find the arc length of a 30 degree sector of a circle with a radius of 10 cm
Elena-2011 [213]
Arc length = Ф/360 * 2πr
= 30/360 * 2*3.14*10
= 1/12 * 62.8
= 5.23

In short, Your Answer would be 5.23 cm

Hope this helps!
3 0
3 years ago
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