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Cerrena [4.2K]
3 years ago
10

Which of the following could NOT

Mathematics
1 answer:
Mama L [17]3 years ago
6 0

Answer:

C

Step-by-step explanation:

|-12|= 12

this means that it represents a positive number. Each answer represents a positive number other than the town that lies -12 feet below sea level. (sorry if I'm wrong)

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Subtract the second expression from the first . (5x^2-3x+5) - (3x^2-4x-7)
Doss [256]

(5x² - 3x + 5) - (3x² - 4x - 7)     Distribute/multiply - into (3x² - 4x - 7)

5x² - 3x + 5 - 3x² + 4x + 7    Combine like terms

2x² + x + 12


The answer is A

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4 years ago
How does a scale factor change the size of a figure?
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The scale factor can change how big or small a figure is, though it will still be similar. For example, a triangle with two sides measuring 3 & 3 (isosceles) are scaled in a factor of 6 (becoming larger).

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3 years ago
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A remote control car races straight down the street at 26 miles per hour. Two
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Answer:

It will take 4 hours for the second car to catch up with the first car.

Step-by-step explanation:

The first step to solving this problem is determining the difference in speed between the first and second car - you can see that the second car (at 52mph) is twice as fast as the first (26mph) therefore it will take half the time to cover the same distance.

As Car 1 has a 2 hour head start, it will be 52 miles ahead after 2 hours.

In the next 2 hours, Car 1 will travel 52 miles - so 104 in total after 4 hours, and car 2 will travel 104 miles, meaning that it will have caught up after 4 hours.

A)

To calculate distance per minute, divide the miles per hour by 60 (as there's 60 minutes in an hour), so:

Car 1 = 26/60 = 0.43 miles per minute

Car 2 = 52/60 = 0.867 miles per minute

To check your calculation, Car 2 should be exactly twice as far

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C) See calculation at the top - the first car is 52miles from the start line when the second car starts

D) 2 cars are competing in this race

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3 years ago
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