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Shkiper50 [21]
3 years ago
7

If y varies directly as x, and y = 20 when x = 4. Find y when x = 2.

Mathematics
2 answers:
noname [10]3 years ago
8 0

Answer:

10

Step-by-step explanation:

If you have to divide x by two, and y varies directly toward x, y also has to divide by two. 20/2 is 10.

Andrews [41]3 years ago
8 0

Answer: 10

Step-by-step explanation:

Given ; y = 20

x = 4

since y varies directly as x,

y = kx

where k is the value of proportionality.

Input the values

20 = k (4)

20 = k4

dividing both sides by 4

20/4 =k

k = 5

To find the value of y when x = 2,

y = kx

y = 5 (2)

y = 10

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Andreyy89

Answer:

166.68

Step by Step:

166.678

The bolded number is greater than 5 meaning you have to round up.

so 166.678 is rounded to 166.68.

Hope this helped.

5 0
3 years ago
Please help with this question<br> 2(2w-6)=6(w-6)+14<br> w=?
IRISSAK [1]
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8 0
3 years ago
CAN SOMEBODY HELP ME PLEASE
Natasha_Volkova [10]

Answer:

  • vertex (3, -1)
  • y-intercept: (0, 8)
  • x-intercepts: (2, 0), (4, 0)

Step-by-step explanation:

You are being asked to read the coordinates of several points from the graph. Each set of coordinates is an (x, y) pair, where the first coordinate is the horizontal distance to the right of the y-axis, and the second coordinate is the vertical distance above the x-axis. The distances are measured according to the scales marked on the x- and y-axes.

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<h3>Vertex</h3>

The vertex is the low point of the graph. The graph is horizontally symmetrical about this point. On this graph, the vertex is (3, -1).

<h3>Y-intercept</h3>

The y-intercept is the point where the graph crosses the y-axis. On this graph, the y-intercept is (0, 8).

<h3>X-intercepts</h3>

The x-intercepts are the points where the graph crosses the x-axis. You will notice they are symmetrically located about the vertex. On this graph, the x-intercepts are (2, 0) and (4, 0).

__

<em>Additional comment</em>

The reminder that these are "points" is to ensure that you write both coordinates as an ordered pair. We know the x-intercepts have a y-value of zero, for example, so there is a tendency to identify them simply as x=2 and x=4. This problem statement is telling you to write them as ordered pairs.

5 0
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Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Help!!!!!!!!!!!!!!!!!!!!!!!!!!
morpeh [17]

Answer:

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8 0
3 years ago
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