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amelia wanted to redeem a voucher. she had only of the total number
of points needed. after she earned another 50 points, she still needed
o of the total number of points. how many points did amelia need to
redeem the voucher?

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.

the answer would be 150 books

step-by-step explanation:

if you divide 300 by 2 you will get 150

she would want to sell 10 full-year subscriptions and at least 9 half-year subscriptions to get a total of at least $300. 

i hope this answer you! if you have any further questions or concerns, feel free to ask! : )

step-by-step explanation:

mark brainliest!

the diver is 33 feet below the surface.

step-by-step explanation:

hope this