Step-by-step explanation:
15=2c+7
15-7=2c
8=2c
8/2=c
4=c
c=4
Cos A = (589^2 + 513^2 - 741^2) / 2 x 589 x 513 = 61,009 / 604,314 = 0.1010
A = cos^-1(0.1010) = 84.2 degrees
Let the depth of the submarine be x, then
sin 84.2 = x / c = x / 513
x = 513 sin 84.2 = 510
Therefore, the depth of the submarine is 510.
Answer:
See below in bold.
Step-by-step explanation:
(-3)^3(2^6)/(-3)^5(2)^2
= (-3)^(3-5)*(2^4)
= 2^4 / (-3)^2 so a = 4 and b = 2.
2^4 / (-3)^2
= 16/9 so c = 16 and d = 9.
Answer:
161
Step-by-step explanation:
8² + b² = 15²
first square 8 = 64
then square 15 = 225
ok.
225 - 64 = 161...