Angles in a triangle add up to 180°
since the other two are 21 and 104, you add them together = 21 + 104 = 125
to make it 180, you take 125 away from 180 = 180 - 125 = 55<span>°
</span>so angle F = 55°
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Answer:
(x - 7y)/(x + 3y)
Step-by-step explanation:
x² - 5xy - 14y²
x² - 7xy + 2xy - 14y²
x(x - 7y) + 2y(x - 7y)
(x - 7y)(x + 2y)
x² + 5x + 6y²
x² + 3xy + 2xy + 6y²
x(x + 3y) + 2y(x + 3y)
(x + 3y)(x + 2y)
[(x - 7y)(x + 2y)] ÷ [(x + 3y)(x + 2y)]
(x - 7y)/(x + 3y)
Answer:
I might not be able to solve it correctly but this might help a lot. Formula: V = πr 2 h
Step-by-step explanation:
The concentration of solution would be the amount of the molecule divided by the volume. In this case, the solution concentration is 36% and the volume is 4 quarts + 1 quarts= 5 quarts. You are asked the concentration before 1 quarts added. The alcohol content should be same for both solutions. The answer should be:
concentration = alcohol content/ volume
alcohol content =concentration * volume
alcohol content1 =alcohol content2
36% * 5 quarts = concentration2 * 4quarts
concentration2= 36% * 5 quarts / 4 quarts= 45%