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Dmitry [639]
3 years ago
8

​Joe, a​ superhero, finishes a meal at a restaurant only to find​ he's left his wallet at home. Not wanting to reveal his secret

identity to his​ date, he excuses himself and slips outside. Dashing home at ​mph, he snatches his wallet from his nightstand and races back to the restaurant at mph. Discounting the time it took to find his​ wallet, what was his average speed for the​ trip?
Mathematics
1 answer:
IrinaK [193]3 years ago
3 0

Answer:

you didnt give any measures.

Step-by-step explanation:

try to type in the whole thing next time

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Solve the quadratic equation x2+8x−30=0 by completing the square.
diamong [38]

Answer:

               \bold{x=-4\pm\sqrt{46}}

Step-by-step explanation:

(a+b)^2=a^2+2ab+b^2\\\\\\x^2+8x-30=0\\\\\underbrace{x^2+2\cdot x\cdot 4+4^2}-4^2-30=0\\\\{}\qquad(x+4)^2\,-\,16-30=0\\\\{}\qquad\ \ (x+4)^2=46\\\\ {}\qquad\ \ x+4=\pm\sqrt{46}\\\\ {}\qquad\ \ x=-4\pm\sqrt{46}

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Which of the following expressions is equivalent to 3 m ( m − 2 ) − ( m ^2 + 1 ) ?
leonid [27]

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Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
What is the equation of line perpendicular to y-3=-4(x+2) and passee through the point (-5,7
netineya [11]

Answer: y=\frac{1}{4}x+\frac{33}{4}


Step-by-step explanation:

1. By definition, two slopes are perpendicular if their slopes are negative reciprocals of each other. So, let's find the slope of the other line.

2. The equation given in the problem is written in Point-slope form:

y-y_1=m(x-x_1)

Where m is the slope.

3. Therefore, the slope of its perpendicular line must be:

m=\frac{1}{4}

4. You have the point (-5,7), so you can substitute it into the point-slope formula to find the equation of the new line:

y-7=\frac{1}{4}(x+5)

5. In slope intercept form is:

y=\frac{1}{4}x+\frac{5}{4}+7\\y=\frac{1}{4}x+\frac{33}{4}

7 0
3 years ago
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Lostsunrise [7]

Answer:

his speed would be 4.5 miles per hour

Step-by-step explanation:

if you do the distance divided by the hours you will get the answer.

  22.5/5=4.5

7 0
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