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3 years ago

What are the answers

Mathematics

1 answer:

e-lub [12.9K]3 years ago

8 0

Answer:

i need this troooooooo

Step-by-step explanation:

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What is the inverse of the function y=4x+5

docker41 [41]

Answer:

the answer for this question is (y-5)/4=x

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3 years ago

Suppose thirty-two students signed up for classes during an orientation session. If

Elis [28]

Answer:

Step-by-step explanation:

add the total that signed up for chemistry with the total that signed up for english which would be 20+16=36

4 0

3 years ago

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

3 years ago

Today everything at a store is on sale The store offers a 20% discount The regular price of a tshirt is 18$ what is the discount

kirill [66]

The discounted price is $14.40. Hope this helped.

6 0

3 years ago

Sandra has $30 to spend at a carnival. Parking costs $6.00 and each ride ticket costs

andrew11 [14]

Answer:

(30-6) ÷1.25

Step-by-step explanation:

30-6=24

24÷1.25=19.2

↓

you round that and you get 19

6 0

4 years ago

What are the answers ​

What are the answers