Alguém sabe como faz essas duas questões ?

Answers

Answer 1

Answer:

Minha resposta: não.

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PLEASE HELP!!!!!!!!The system of equations is inconsistent. What are the missing values?

5x+____y=2
____x+3y=8

Answers

$5x+ay=2 \nbx+3y=8$

Write it in the y=mx+b form.

$ay=-5x+2 \n3y=-bx+8 \n \ny=-(5)/(a)x+(2)/(a) \ny=-(b)/(3)x+(8)/(3)$

The system will be inconsistent when the equations describe two parallel lines.
Two lines are parallel when their slopes are identical.
$-(5)/(a)=-(b)/(3) \nab=(-5) * (-3) \nab=15$

Also they can't be the same line, so the y-intercepts must be different.
$(2)/(a) \not= (8)/(3) \n8a \not= 2 * 3 \n8a \not= 6 \na \not= (6)/(8) \na \not= (3)/(4)$

So for every value of a and b such that ab=15 and a≠3/2 this system of equations is inconsisent.

It can be:
$5x+5y=2 \n3x+3y=8$
or
$5x+15y=2 \nx+3y=8$
or
$5x+(1)/(2)y=2 \n30x+3y=8$
etc.

Nola hiked down a trail at a steady rate for 10 minutes. Her change in elevation was -200 feet. Then she continured to hike down for another 20 minutes at a different rate. Her change in elevation for this part of the hike was -300 feet. Durning which portion of the hike did she walk down at a faster rate? Explain your reasoning

Answers

a steady rate of 10 minutes is the faster rate because it took her 200 feet to get where she was at first but if she did for 20 minutes there would be 100 feet

400 should be the answer bc 10 is 200 so 20 should be 400

You work part-time at the “Pack-it and Mail-it” that sells containers used for shipping items. Your photography teacher asks you to recommend the best package to ship 35 mm film containers. The film containers are 1 inch in diameter and 2 inches in height, and they are to be shipped in groups of twelve.A) Find the volume of twelve film containers. Round your result to two decimal places and show all calculations below.

B) Which container should be used to fit a dozen film containers with the least amount of wasted space? Explain your reasoning.

At work you get a list of package sizes. Your store has four box sizes that look like they might work. The sizes are given in the form l x w x h. They are 3 in. x 2 in. x 5 in., 4 in. x 3in. x 2 in., 5 in. x 6 in. x 5 in., and 3 in. x 2 in. x 3 in.

Answers

Answer:

(a)18.85 Cubic Inches

(b)The box with dimensions of 4 in. x 3in. x 2 in.

Step-by-step explanation:

Part A

Volume of the 12 Containers

Height =2 Inches

Diameter=1 Inch

Radius=Diameter/2=1/2=0.5 Inch

Volume of a cylinder $=\pi r^2 h$

Volume of the 12 Containers

$=12 X \pi r^2 h\n=12 X\pi X0.5^2X2\n=6\pi $ cubic inches\n=18.85 \text{cubic inches (to two decimal places)}$

Part B

To determine the container which should be used, we first determine the volume of the available boxes.

Volume of the boxes

Volume of box with dimension 3 in. x 2 in. x 5 in.=3X2X5=30 Cubic Inches

Volume of box with dimension 4 in. x 3in. x 2 in.=4X3X2=24 Cubic Inches

Volume of box with dimension 5 in. x 6 in. x 5 in.=5X6X5=150 Cubic Inches

Volume of box with dimension 3 in. x 2 in. x 3 in. =3X2X3=18 Cubic Inches

The box that should be used with the least amount of wasted space is he box with volume 24 Cubic inches. i.e. box with dimensions 4 in. x 3in. x 2 in.

This is because the volume of the box(18 cubic inches) with dimension 3 in. x 2 in. x 3 in. is less than what is required.

Look at this graph:
Is this relation a function?
yes
no

Answers

Answer: This does not represent a function

Step-by-step explanation: To tell if this relation is a function, we can use the vertical line test. In other words, if we can draw a vertical line that passes through more than one point on the graph, then the relation is not a function. In this situation, it's possible to have a vertical line that passes through more than one point so it's not a function.

Image provided.

This does not represent a function. You can use the vertical line test. If it doesn't go through more than one x value then it is a function.

Which number would you put in a frequency table to show 8

Answers

well 2x4 would = 8 so you would have to put 2 and 4

Final answer:

A frequency table lists numbers and their occurrences within a set of data. If '8' shows up in your data, you would put it in the frequency table alongside the number of times it appears.

Explanation:

A frequency table is a helpful tool in statistics. It's a type of tally chart that shows how often different numbers or items occur in a set of data. If the number '8' appears in your data, you would place it in the frequency table alongside the number of times it appears.

For example, if the number '8' appeared three times in your data, your frequency table might look something like this:

Number: 8
Frequency: 3

This shows that the number '8' has a frequency of 3 in your data set.

Learn more about Frequency Table here:

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How do you make zero pairs ?

Answers

Zero pairs can be (+1)+(-1)=0.

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