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Thepotemich [5.8K]
3 years ago
5

Jimmy and his family are on their way to visit some family friends who live 495 miles away from them. Based on the route they ch

ose, they expect to complete their trip in three days. The distances and average speeds for the first two days driven are shown below. • First day: 2 hours at an average speed of 30 miles per hour • Second day: 3 hours at an average speed of 65 miles per hour If the average speed on the third day is 60 miles per hour, how many more hours will it take for them to reach their family friends' home?
Mathematics
1 answer:
julsineya [31]3 years ago
5 0
That’s pretty hard questions
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Answer:

  a.  segment DE and segment EF are congruent to each other but not to segment DF, and their slopes are not related.

Step-by-step explanation:

In order for a triangle to be isosceles, two of the line segments must be congruent. (eliminates choices C and D)

If the slopes of the congruent segments are negative reciprocals of each other, the triangle is a right triangle, not an acute triangle. (eliminates choice B)

With choices B, C, D eliminated, we are left with choice A.

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However, <em>that necessary description is not sufficient</em> to constrain the triangle to be an acute triangle. In order for the triangle to be acute, the third side must be less than √2 times the length of either of the congruent sides.

The correct answer is "none of the above."

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3 years ago
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Sergio [31]
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3 years ago
Please help!! Urgent! Due soon! - A bedroom is initially squat-shaped with each side x feet long. The room is then expanded so t
Masja [62]

Answer:

The second one; x²+7x+12

Step-by-step explanation:

So, since the beginning lengths of the square is x and x, the area of the square is x².

But then, you add 3 to one length, so that side is now (x+3), and then you add 4 to the width, so that is now (x+4).

Finally, you would multiply them together to get the equation you would use to find the new area.

For this, you would cross-multiply everything together; the x in the length by the x in the width, the x in the length by the 4 in the width, the 3 in the length by the x in the width, and then the 3 in the length by the 4 in the width. Now, all you have to do is add all of these together to get your answer.

Here's the work:

(x+3)(x+4)\\x^{2}+3x+4x+12\\x^{2}+7x+12

5 0
2 years ago
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GalinKa [24]

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3 years ago
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Choosing a limited warranty may be a better choice (compared to a full warranty) when you are unsure of your plans in the future and may want to cancel your purchase.

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4 0
3 years ago
Read 2 more answers
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