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3 years ago

Find missing angles and variables

Mathematics

1 answer:

shutvik [7]3 years ago

7 0

Answer:

e= 2x-4

Step-by-step explanation:

the opposite of e is 2x-4.

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An automobile travels past the farmhouse at a speed of v = 45 km/h. How fast is the distance between the automobile and the farm

yulyashka [42]

Answer:

$\frac{ds}{dt} = 39.586 km/h$

Step-by-step explanation:

let distance between farmhouse and road is 2 km

From diagram given

p is the distance between road and past the intersection of highway

By using Pythagoras theorem

$s^2 = 2^2 +p^2$

differentiate wrt t

we get

$\frac{d}{dt} s^2 = \frac{d}{dt} (4 + p^2)$

$2s \frac{ds}{dt} =2p \frac{dp}{dt}$

$\frac{ds}{dt} = \frac{p}{s}\frac{dp}{dt}$

$\frac{ds}{dt} = \frac{p}{\sqrt{p^2 +4}} \frac{dp}{dt}$

putting p = 3.7 km

$\frac{ds}{dt} = \frac{3.7}{\sqrt{3.7^2 +4}} 45$

$\frac{ds}{dt} = 39.586 km/h$

3 0

3 years ago

Please Help! Which statement best demonstrates why the following is a non-example of a polynomial?

Mama L [17]

I agree with you on this problem. It is A. If that is the final answer, the negative exponent must be flipped in order to be positive. According to the equation, it is not positive so it is not a simpflied polynomial.

5 0

3 years ago

Read 2 more answers

Measurement is the use of numbers according to a standard true or false

Softa [21]

Answer:

True

Step-by-step explanation:

3 0

3 years ago

A fair spinner has 9 equal sections: 2 red, 3 blue and 4 green.

elixir [45]

Probability of 2 consecutive greens equals 4/9*3/8=1/6
Probability of not getting equals 1-1/6=5/6

4 0

3 years ago

2x+3y= 14 3х - 4 y = 4

goldenfox [79]

The solution to given system of equations are (x, y) = (4, 2)

Solution:

Given system of equations are:

2x + 3y = 14 ---------- eqn 1

3x - 4y = 4 --------- eqn 2

We have to solve the given system of equations

We can solve the above system of equations by elimination method

Multiply eqn 1 by 3

3(2x + 3y = 14)

6x + 9y = 42 --------- eqn 3

Multiply eqn 2 by 2

2(3x - 4y = 4)

6x - 8y = 8 ----------- eqn 4

Subtract eqn 4 from eqn 3

6x + 9y = 42

6x - 8y = 8

( - ) --------------

9y + 8y = 42 - 8

17y = 34

Substitute y = 2 in eqn 1

2x + 3(2) = 14

2x + 6 = 14

2x = 14 - 6

2x = 8

Thus the solution to given system of equations are (x, y) = (4, 2)

5 0

3 years ago