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tester [92]
2 years ago
5

Please help and please slove and explain im not getting this

Mathematics
1 answer:
OLga [1]2 years ago
5 0

Answer:

x-intercept= (3⅓, 0)

y-intercept= (0, 4²⁄₇)

Please see the attached picture for the graph.

Step-by-step explanation:

-9x -7y= -30

Let's simplify the equation by dividing both sides by -1.

9x +7y= 30

x- intercept occurs at y= 0.

When y= 0,

9x +7(0)= 30

9x= 30

x= 30 ÷9

x = 3 \frac{1}{3}

Thus, x- intercept occurs at (3⅓, 0).

y-intercept occurs at x= 0.

When x= 0,

9(0) +7y= 30

7y= 30

y= 30 ÷7

y = 4 \frac{2}{7}

Thus, y- intercept occurs at (0, 4²⁄₇).

_____

To graph the equation, draw the x and y axis on a graph paper. Use an appropriate scale to divide the line into equal parts. Next, plot the points (3⅓, 0) and (0, 4²⁄₇). Then, join the two points with a straight line.

Notes:

  • x- intercept is the point at which the graph cuts through the x- axis. In this case, your x- axis is the horizontal line that runs from left to right of your graph paper. In order for a point to be on this horizontal line, look at the y- axis and notice that it sits at y= 0. The same reason applies for why the y- intercept occurs at x= 0. This has to do with the two axis cutting each other at the point (0,0), resulting in the x and y coordinates of 0 for the y and x intercepts respectively.

  • Simplifying the equation in the first step is not necessary, but it is a good practice and might reduce carelessness.

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Answer:

1000 : 199 : 271

Step-by-step explanation:

A rations a form of comparison between different variables or quantities.

We want to compare how much water, sucrose and saline solution are used to make the medicine.

The amount of water used is 1 L = 1000 mL

The amount of sucrose used is 199 mL

The amount of saline solution used is 271 mL

Therefore, the ratio of water to sucrose to saline solution is:

1000 : 199 : 271

This is the simplest form because 1000, 199 and 271 do not have any common factors.

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3 years ago
Need help with all this
Inessa [10]

✧・゚: *✧・゚:*    *:・゚✧*:・゚✧

                  Hello!

✧・゚: *✧・゚:*    *:・゚✧*:・゚✧

❖ To find the mean, add up all the numbers and divide by the amount of numbers there are. To find the range, subtract the highest number by the  lowest number in the data set.

2. Mean = 35  Range = 78

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8. Mean = 60  Range = 75

9. Mean = 50  Range = 76

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~ ʜᴏᴘᴇ ᴛʜɪꜱ ʜᴇʟᴘꜱ! :) ♡

~ ᴄʟᴏᴜᴛᴀɴꜱᴡᴇʀꜱ

7 0
3 years ago
2 Simplify -3(16 = 35+4)/5. Show your work.
Masteriza [31]

Answer:

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Step-by-step explanation:

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3(-15) = -45/5

-45 divided by 5 = -9

3 0
3 years ago
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