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3 years ago

Im stuck on this question, plz help

Mathematics

1 answer:

denis-greek [22]3 years ago

3 0

Answer:

Kindly check explanation

Step-by-step explanation:

Given the following :

40 metres covered in 6 seconds

Max speed attained after 6seconds

75 meters covered after 11 seconds

Average Speed for first 40 meters :

Speed = distance / time

Speed = 40m / 6s

Speed = 6.67m/s

To obtain the maximum speed :

Next (75 - 40) meters = 35 meters was covered in (11 - 6)seconds = 5 seconds

Speed at this point is maximum :

Hence, maximum speed = (35m / 5s) = 7m/s

Suppose, Manuel runs for an additional z seconds after reaching max speed :

Distance from starting line 6+z seconds after race started?

Distance after 6 seconds = 40 metres

Distance after z seconds = 7 * z

Total distance = (40 + 7z)

What is Manuel's distance from the starting line x seconds after the race started (provided x≥6x)?

Distance for first 6 seconds = 40 meters + distance covered after 6 seconds = (7 * (x-6))

40 + 7(x - 6)

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Answer:

True : Amanda spends 15% of her salary on food.

False: Amanda spends 50% of her salary on savings and car payment and insurance combined.

False: Amanda spends 10% of her salary on phone and internet.

False: Amanda spends 5% of her salary on clothes.

Step-by-step explanation:

The monthly salary of Amanda = $1,500

Money Savings = $475 , Car payment and Insurance = $425

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Now, check each of the given statements:

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Now,15% of $1500 = $\frac{15}{100} \times 1500 = 225$

⇒ 15 % of her salary is $225.

So, the given statement is TRUE.

2) Amanda spends 50% of her salary on savings and car payment and insurance combined.

Now,50% of $1500 = $\frac{50}{100} \times 1500 = 750$

Also, combined amount of savings and car payment insurance

= $475 + $425 = $900

But 50 % of her salary is $750.

So, the given statement is FALSE.

3) Amanda spends 10% of her salary on phone and internet.

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So, the given statement is FALSE.

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So, the given statement is FALSE.

7 0

3 years ago