2 years ago

Question 1

Mathematics

1 answer:

yaroslaw [1]2 years ago

8 0

Answer:

sorry but i need some points right now so just ignore this

Step-by-step explanation:

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A ball rolls down an inclined plane such that the distance (in centimeters) that it rolls in t seconds is given by s(t) = 2t^3 +

IRISSAK [1]

The ball's velocity will be represented by the derivative of its distance function:

$s'(t)=6t^2+6t$

Now find the times $t$ for which this is equal to 30, i.e. solve

$6t^2+6t=30\implies t^2+t-5=0$

This has two solutions, $t=-\dfrac{1\pm\sqrt{21}}2$ , but only one is positive and falls in the interval $[0,3]$ . So the velocity reaches 30 cm/s when $t=-\dfrac{1-\sqrt{21}}2\approx1.79$ .

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2 years ago

A truck driver drove 48 miles for 45 minutes. At this rate, how many miles can the truck driver drive in one hour?

alexandr1967 [171]

Answers

2880

Step-by-step explanation:

48 miles = 1 minute

? = 60 minutes( 1hr )

1hr = 48 × 60 = 2880miles

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2 years ago

At a basketball game, a vender sold a combined total of 100 sodas and hot dogs. The number of sodas sold was 38 more than the nu

Lina20 [59]

Answer:

64 sodas

36 hotdogs

Step-by-step explanation:

Well i just guessed and checked but thats the answer

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2 years ago

What will be the coordinates of N after a 90° counterclockwise rotation around the origin?

USPshnik [31]

Answer:

A. (-7,-3)

D.(-3,-7) If clockwise

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Which of the objects shown below could be sliced to create hexagonal cross-sections?

Tomtit [17]

Answer:

Yo like I’m on the same question for khan...what was the answer dood?

Step-by-step explanation:

4 0

2 years ago

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