Amelia knits 1/10 of a scarf in 48 minutes. What fraction of a scarf can Amelia knit in 1 hour?

Mathematics

1 answer:

EleoNora [17]3 years ago

4 0

Answer:

1/8

Step-by-step explanation:

If you look at the 48 min., then you can see that 60 min and 48 have a GCF of 12. 48/12 is 4, so 1/10 should be divided by 4 too. that is 1/40. 12 * 5 is 60, so 1/10 should be multiplied by 5 too. That makes 1/8.

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Which is the graph of the solution set of −2x + 5y > 15? Image for option 1 Image for option 2 Image for option 3

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To make that graph you follow these steps.
1) Set the cartesian coordinate system:
- vertical axis: y
- horizontal axis: x
- positive x-semi axis: to the right
- negative x-semi axis: to the left
- positive y-semi axis: upward
- negative y semi axis: dwonward

2) solve the inequality for y:
given:                   -2x + 5y > 15
transpose-2x:            5y > 15 + 2x
divide by 5:                  y > 3 + (2/5)x

3) Graph

- draw the line y = 3 + (2/5)x, using a dotted line (i.e. - - - - - -)
- remember that 3 is the y intercept, and 2/5 is the slope
- the line is dotted because the solution does not include the points in the line.

- the solution is the region above and to the left of the dotted line.

4) See the figure attached for better visualization: the pink region is the solution of the inequality.