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3 years ago

Hey is anyone available to answer rn? I need it quick =v=

Mathematics

2 answers:

kotegsom [21]3 years ago

6 0

No because it doesn’t add up to the pattern the graph is showing

lions [1.4K]3 years ago

3 0

It isn’t, because the numbers on the x are going up by 4 while the numbers on the y (x,y) are going up by 3, so it isn’t a 2:1 ratio

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A person stands 10 meters east of an intersection and watches a car driving towards the intersection from the north at 13 meters

In-s [12.5K]

Answer:

Therefore the rate change of distance between the car and the person at the instant, the car is 24 m from the intersection is 12 m/s.

Step-by-step explanation:

Given that,

A person stand 10 meters east of an intersection and watches a car driving towards the intersection from the north at 13 m/s.

From Pythagorean Theorem,

(The distance between car and person)²= (The distance of the car from intersection)²+ (The distance of the person from intersection)²+

Assume that the distance of the car from the intersection and from the person be x and y at any time t respectively.

∴y²= x²+10²

$\Rightarrow y=\sqrt{x^2+100}$

Differentiating with respect to t

$\frac{dy}{dt}=\frac{1}{2\sqrt{x^2+100}}. 2x\frac{dx}{dt}$

$\Rightarrow \frac{dy}{dt}=\frac{x}{\sqrt{x^2+100}}. \frac{dx}{dt}$

Since the car driving towards the intersection at 13 m/s.

so, $\frac{dx}{dt}=-13$

$\therefore \frac{dy}{dt}=\frac{x}{\sqrt{x^2+100}}.(-13)$

Now

$\therefore \frac{dy}{dt}|_{x=24}=\frac{24}{\sqrt{24^2+100}}.(-13)$

$=\frac{24\times (-13)}{\sqrt{676}}$

$=\frac{24\times (-13)}{26}$

= -12 m/s

Negative sign denotes the distance between the car and the person decrease.

Therefore the rate change of distance between the car and the person at the instant, the car is 24 m from the intersection is 12 m/s.

8 0

2 years ago

Help pleaseeeeeeeeeeeeeeeeeeeeeeeeeeeeee

koban [17]

Answer:

the last one :)

Step-by-step explanation:

5 0

2 years ago

A teacher can grade 30 papers in 6 minutes and 100 papers in 20 minutes what is the rate of change

mr Goodwill [35]

Answer:

Step-by-step explanation i subtracted but im not good at math so dont take my word for it

3 0

2 years ago

Matt’s dog weighs 30 pounds. His dog 20 more pounds than 4 times his cat. What is the weight of the cat?

Arada [10]

Answer:

6 pounds

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

On a scale drawing a building measures 4.5 cm tall is the scale of the drawing is 25 m per2 cm how tall is the actual building

ioda

Answer:

Actual height of the building $=112.5$ meters

Step-by-step explanation:

Given

Scale of the drawing

1 cm = 25 meters

This means that any 1 cm line on the map represents a length of 25 meters in actual.

The height of the building on map $= 4.5$ cm

Actual height of the building

$= 4.5 * 25\\=112.5$ meters

7 0

3 years ago