There were 60 dogs at the park over the weekend. 48 of them played in the pond. What percent did not play in the pond

If 60 dogs went to the playground and 48 of them played in the pond, that would mean that 12 dogs did not play in the pond. This would mean that in order to find the percent that did not play in the pond, we need to divide the number of dogs that did not play in the pond by the total number of dogs at the park (12 divided by 60). After doing this, we find that 20% of dogs at the park that weekend did not play in the pond.

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

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step-by-step explanation: