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4 years ago

11

Calculate the average velocity or a race car when an object travels on track and passes the 300m mark at 10 seconds and the 1100

m mark at 24.5 seconds. rounded to the nearest whole number.

1 answer:

Mrrafil [7]4 years ago

7 0

Answer:

55 m/s

Step-by-step explanation:

average velocity $=\frac{1100-300}{24.5-10} =\frac{800}{14.5}=\frac{1600}{29} \approx 55 ~m/s$

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Answer:

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3 years ago

Bring the fraction a/a−4 to a denominator of 16−a^2<br><br> really do appreciate this thx

RSB [31]

Answer:

-a(a+4)/(16 - a²)

Step-by-step explanation:

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3 years ago

Find the slope, if it exists, of the line containing the pair of points. (8,3) and (9,-8)

AlladinOne [14]

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Step-by-step explanation:

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3 years ago

Read 2 more answers

A company makes greeting cards and their research shows that that price and demand are related linearly: p = mx + b. They know t

Andrew [12]

Answer:

p = -0.05x+22

Step-by-step explanation:

The general linear equation of price-demand is

(1) <em>p = mx + b </em>

<em> </em>

where x is the demand of cards in units when they are sold at x dollars.

If for every additional card they wish to sell they need to drop the price by $0.05, then

(2) p-0.05 = m(x+1)+b

To sell 360 cards they need to set the price at $4, so

(3) 4 = m.360+b

We need to find m and b.

Operating on eq. (2) we have

p-0.05 = mx+m+b

mx+b-0.05 = mx+m+b

m = -0.05

Replacing this value in (3)

4 = (-0.05)360 +b

4 = -18+b

b = 22

So, the linear equation relating price p to demand x is

p = -0.05x+22

See graph attached.

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3 years ago

AlladinOne [14]

I will give you the answer if you give me brainliest answer

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3 years ago