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timurjin [86]
3 years ago
12

10 times7? Will mark brainiest!

Mathematics
2 answers:
professor190 [17]3 years ago
4 0

Answer:

70 i d k  man

charle [14.2K]3 years ago
3 0

Answer:

70.?

why do I feel like there's more to this question

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Train completes journey of 150 miles one hour earlier if original speed is increased by 5mes/hour What is original speed
bija089 [108]
25mph.

using the equation distance = speed x time, you can make 2 equations. let x be the original speed of the train, and t be the original time it takes. the first equation is the original trip, the 2nd is your new speed and shortened time.
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this is because you are adding 5mph, and taking off 1 hour of time, to still cover the 150 miles. you can solve the first equation for t, and substitute into the second, and then solve for x.
t= \frac{150}{x}  \\ 150=(x+5)(t-1)=xt+5t-x-5 \\ 150=150+5( \frac{150}{x})-x-5 \\ 5= \frac{750}{x} -x \\ 5+x= \frac{750}{x}   \\ x^2+5x=750 \\ x^2+5x-750=0
and using the quadratic formula you can find x=25.
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3 years ago
What is the slope of the line through the points (2,-3) and (6,5)? m= _?_
nirvana33 [79]

Answer:it should be 5,1

Step-by-step explanation:

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