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Law Incorporation [45]
3 years ago
13

Why would negative numbers not make sense for the values of the variables

Mathematics
2 answers:
Naily [24]3 years ago
7 0
One reason that negative numbers would not make sense for values of the variables is that the solution having a negative value is not valid. It might be that the expression represents a real word problem and a negative value will not make any sense. Hope this helps.
atroni [7]3 years ago
5 0

For this case, what we are going to do is answer the question using an example.

Suppose that the equation of the height of a ball as a function of time is given by:

h (t) = -16t ^ 2 + 40t + 100

We want to find the time when the ball reaches the ground.

To do this, we must match the equation to zero:

-16t ^ 2 + 40t + 100 = 0

From here, we clear the time.

The polynomial is of the second degree.

Therefore, it has two solutions.

Since we want to find time, then negative solutions do not make sense in this case.

Answer:

Negative values do not make sense for variables in some real-life problems.

Example: find the time when a ball hits the ground.

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Write a quadratic equation whose solutions are 7i and -7i
mrs_skeptik [129]
x = \pm 7i  \\  \\ x^2 = -49 \\  \\ x^2 +49 = 0
4 0
3 years ago
How do I simplify this?
Aleksandr [31]

Answer:

whats to simplify

Step-by-step explanation:

actally

4 0
3 years ago
I NEED HELP PLEASE, THANKS
castortr0y [4]

First, find the scale factor.

8.4 / 7 = 1.2

9 / 7.5 = 1.2

7.2 / 6 = 1.2

Since both solids are different sizes, the solids aren't congruent.

The size ratio for all the sides are:

8.4:7

9:7.5

7.2:6

Since the scale factor isn't 1:1 this also proves that the solids are NOT congruent.

Since both solids are the same kind of shape and have an identical scale factor, the solids are similar.

Best of Luck!

5 0
3 years ago
A rectangular container can hold 45 candles, while a cylindrical container holds 41 candles. Each rectangular
kap26 [50]

Answer:

  a) no

  b) 143 rectangular containers

  c) 157 cylindrical containers

  d) both (preferring rectangular for the bulk of an order)

Step-by-step explanation:

a) If the company needs to package 6,400 candles, should it use only rectangular or only cylindrical containers to minimize costs?

  No.*

For packaging 41 candles or fewer, the cylindrical container costs less than the rectangular one.

For packaging 6400 candles, there will be 10 candles left over if rectangular containers are used for most of the packaging needs. A dollar can be saved by packaging these remaining candles in a cylindrical container.

__

b) How many rectangular containers will be necessary to package 6,400 candles?

  6400/45 = 142 10/45

If rectangular containers are used for all, then 143 are needed.

__

c) How many cylindrical containers will be necessary to package 6,400 candles?

  6400/41 = 156 4/41

If cylindrical containers are used for all, the 157 are needed.

__

d) Which container should the company use to minimize costs?

  The cost of 143 rectangular containers is 143×$16 = $2288

  The cost of 157 cylindrical containers is 157×$15 = $2355

  The cost of 142 rectangular and 1 cylindrical container is $2287

If only one shape container is used, the company should use rectangular containers to minimize cost. If either shape can be used, cost will be minimized by using one cylindrical container for the remnant of the order.

_____

* This question is directed solely at the cost of materials required for packaging. We have advocated that both rectangular and cylindrical containers be made available. As a practical matter, the cost to the company of maintaining inventory of both sizes of containers may exceed the savings associated with using a cheaper container for smaller orders.

8 0
3 years ago
What effect does a scale factor equal to 1 have on the dimensions of the image being scaled?
FromTheMoon [43]

The scale factor equal to 1 will have No Effect on the dimensions of the image being scaled .

In the question ,

it is given that ,

the scale factor is = 1.

we have to find the effect of change ;

we know that ,

when the value scale factor is greater than 1 , then dimensions of new image is larger than original .

when the value of scale factor is 1 , then there is no change in the dimensions of the image .

when the value of scale factor is less than 1 , then the dimensions of new image is smaller than the original .

Therefore , if the scale factor is 1 , then there is no change in the dimensions of the image .

Learn more about Scale Factor here

brainly.com/question/29545968

#SPJ4

4 0
1 year ago
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