At z= 12:
z/4 -8z+ 2(z-5)
= 12/4 -8*12+ 2(12-5)
= 3 -96+ 2*(7)
= -93+ 14
= -79
The correct answer is A. -79~
The height of the taller building is 18.6 meters
<h3>How to find the side of a right triangle?</h3>
A right triangle has one of its angles as 90 degrees. The side of a right angle triangle can be found using trigonometric ratios.
Therefore, the height of the taller building is the sum of the height of the smaller building and upper part of the taller building.
tan 53 = opposite / adjacent
tan 53 = x / 10
cross multiply
x = 10 tan 53
x = 10 × 1.32704482162
x = 13.2704482162
x = 13.3 m
tan 28 = y / 10
y = 10 tan 28
y = 5.31709431661
y = 5.3
Therefore, the height of the taller building is 13.3 + 5.3 = 18.6 meters.
learn more on right triangle here: brainly.com/question/14324872
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Answer: m< BCA = 2(m<BED)
Step-by-step explanation:
I don't know what ll means in the last one and the other two aren't true. DE_ is not the same size as AC_ let alone 2AC_
Answer:
552,299
500,000
50,000
500,000 is 10 times greater than 50,000
50,000 is 10 times less than 500,000
Step-by-step explanation:
1) expand csc and cotx identity
(1/sinx)-sinx = (cosx/sinx)*(cosx)
2) get common denominator on the left side
(1-sin^2x)/(sinx)= (cos^2x)/sinx
3) using cos^2x+sin^2x=1 you finished
cos^2(x)/sinx= cos^2(x)/sinx
hope that helps<span />