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Vadim26 [7]
2 years ago
13

There are two factors that limit how much he can bake in a week: He only wants to work for 40 hours a week and he only has one o

ven. Suppose that it takes the baker 1hour to prepare a pair of cakes or a gross of cookies (before they are placed in the oven). Since he only wants to work 40 hours a week, his output of pairs of cakes x and his output of grosses of cookies y are constrained by the equation x+y=40.
To maximize the profit of the bakery, the first step is to find where the equations for all of the constraints intersect. For the following part, you will look at x+y=40 and y=0, which is also a constraint (specifically a minimum) since the baker cannot make a negative number of cookies.

Parts A and B might seem easier than most problems with linear systems, but in them you will use the basic techniques needed to solve any linear system: adding equations to cancel variables and substituting the value of one variable to find the value of the other.

Part A
One way of solving systems of linear equations is by adding a multiple of one equation to the other. The multiplier for the first equation is chosen so that one of the two variables will cancel out in the sum. What should you multiply the equation y=0 by so that when added to x+y=40 the variable y will cancel out?
Express your answer numerically.
Physics
1 answer:
anyanavicka [17]2 years ago
4 0

Answer:

  -1

Explanation:

The coefficient of y in the equation x+y=40 is 1. To make the y-terms cancel when the second equation is added, its coefficient must be -1. It has a coefficient of 1 now, so that equation should be multiplied by -1.

  (x +y) +(-1)(y) = (40) +(-1)(0)

  x = 40 . . . . . . . simplified; y-terms were cancelled

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What is a wave? Use the terms wavelength and frequency in your definition.
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Explanation:

A wave is a disturbance in a medium. For example, when some pebbles are thrown in water, the water particles gets disturbed. A wave is characterized by the following parameters i.e.

Frequency

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The number of oscillations or vibrations in a medium is called the frequency of a wave.

Also, the distance between two consecutive crests and troughs is called the wavelength of a wave. The relationship between the wavelength and the frequency of a wave is given by :

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8 0
3 years ago
One litre of crude oil weighs 9.6N. Calculate its specific weight, density and specific gravity.​
Zepler [3.9K]

Answer:

The answer is "\bold{9600 \frac{N}{m^3}, 978.59 \frac{kg}{m^3}, and \ 0.978}"

Explanation:

Given:

\to v=1\ liter= 10^{-3} \ m^3\\\\\to  w= 9.6 \ N\\

calculation:

Specific \ weight =\frac{w}{v}=\frac{9.6}{10^{-3}}=9600 \frac{N}{m^3} \\\\w=mg\\\\m= \frac{w}{g}=\frac{9.6}{9.81}=0.9785\ kg\\\\\rho\ (density)=\frac{m}{v}=\frac{0.9785}{10^{-3}}=978.59 \frac{kg}{m^3}\\\\specific \ gravity = \frac{\prho \ obj}{\rho w}=\frac{978.54}{1000}=0.978

4 0
2 years ago
A train is moving at a speed of 50 km/h. How many hours will it take thetrain to travel 600 kilometers
olga_2 [115]

Answer:

12

Explanation:

600/50 is 12 so the answer is twelve

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Joe is hiking through the woods when he decides to stop and take in the view. He is particularly interested in three objects: a
Novosadov [1.4K]

Answer:

A) correct answer is C,   B)   correct answer is b  and C) The correct answer is b

Explanation:

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where f is the focal length of the cornea-crystalline system, p and q are the distances to the object and the image.

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let's apply this expression to our case

A) indicates that the tree is at a medium distance

so that the image is formed on the retina THE SAME AS

correct answer is C

B) The squirrel is at a smaller distance (p ') than the tree (p), therefore if we substitute in the equation above we find that q must decrease. Consequently the image is in front of the retina

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C) The squirrel is very close so the curvature of the lens INCREASES, resulting in a DECREASE in the focal length

The correct answer is b

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3 years ago
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