18. s = 5r^2 + 7......making r the subject
s - 7 = 5r^2
(s - 7) / 5 = r^2...by taking the sqrt of both sides, it eliminates the ^2
( sqrt (s-7)/5) = r
19. h = ut - 1/2gt^2....u = 100, t = 1 4/5(or 9/5)...g = 6.4
h = (100)(9/5) - 1/2(6.4)(9/5^2)
h = 180 - 1/2(6.4)(3.24)
h = 180 - 3.2(3.24)
h = 180 - 10.368
h = 169.632 or 169 79/125
20. sorry..do not know this one
Answer: 50
Step-by-step explanation:
[6+√-64] × 3-√-16
(6+8i)(3-4i)
6(3-4i)+8i(3-4i)
18-24i+24i+32
18+32=50
<h3> the answer is
50</h3>
The answer is 6 because a=8
Answer:
£4.59
Step-by-step explanation:
<em>4.38 + 0.45 + 0.58 (0.29 + 0.29) = 5.41</em>
£10.00 - 5.41 = £4.59
Answer:
PLEASE HELP
For the right triangles below, find the values of the side lengths b and c.
Round your answers to the nearest tenth.
Step-by-step explanation:
PLEASE HELP
For the right triangles below, find the values of the side lengths b and c.
Round your answers to the nearest tenth.
