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ipn [44]
3 years ago
12

Someone help me for this algebra task please

Mathematics
1 answer:
Gekata [30.6K]3 years ago
3 0

Answer:

200

Step-by-step explanation:

Substitute 15 for y

\frac{1}{5} x -  \frac{2}{3} (15) = 30

\frac{1}{5} x - 10 = 30

\frac{1}{5} x = 40

x = 200

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Step-by-step explanation:

8 0
3 years ago
Which answer does NOT correctly describe the graph of y = 5x + 12?
Svetlanka [38]
<h2>Answer</h2>

2. The Graph Contains The Point (5, 12)

<h2>Explanation</h2>

Remember that in a linear function of the form y=mx+b, m is the slope/rate of change of the line and b is the y-intercept.

From our equation we can infer that b=12, so the y-intercept of our graph is 12 units above the origin on the point (0, 12). Therefore, choice 2 correctly describe the graph of y = 5x + 12

We can also infer that m=5, so the slope of our line is 5, which is constant, so our line has a constant rate of change. Also, since every integer can be written as a fraction with denominator 1, we can write our slope as m=\frac{5}{1}. Therefore, choices 1 and 2 correctly describe the graph of y = 5x + 12.

Now, remember that any point on the plane has coordinates (x,y), so, to check if a point is on a line, we just need to replace the x and y values in the line equation and check if the equation holds. Our point is (5, 12), so x = 5 and y = 12. Lets replace the values in our line:

y=5x+12

12=5(5)+12

12=25+12

12\neq 37

Since the equation equation doesn't hold (12 is not equal 37), we can conclude that the graph doesn't contain the point (5, 12). Therefore, choice 2 does NOT correctly describe the graph y = 5x +12.


7 0
4 years ago
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nexus9112 [7]

Answer:

6

Step-by-step explanation:

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Step-by-step explanation:

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Answer:

1 1/2 or 1.5

Step-by-step explanation:

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