Step-by-step explanation:
f(x) = 9 * 81^x
When x = -1/2,
f(-1/2) = 9 * 81^(-1/2) = 9 * (1/9) = 1.
Answer: A & C
Step-by-step explanation: A. Two parallel lines are coplanar.
C. Two planes that do not intersect are parallel.
Answer:
EF = 58/7
Step-by-step explanation:
If you extend both BC and AD to meet at P you get 3 similar triangles PAB, PEF, and PCD. Let's call BF = 3x and FC = 4x. Therefore the following proportions can be expressed:
BP/7 = (BP+7x)/10
10BP = 7*(BP+7x)
10BP = 7BP+49x
3BP = 49x
BP = (49/3)x
BP/7 = (BP+3x)/EF
EF = (BP+3x)*7/BP
EF = ((49/3)x + 3x)*7/((49/3)x)
EF = ((58/3)x*7*3)/(49x)
EF = 58/7
The answer is 14 you just have to substitute x with the given number and finish the equation
Answer: d = 9.219544 this is kinda exact haha
Step-by-step explanation:
For:
(X1, Y1) = (2, 4)
(X2, Y2) = (9, 10)
Distance Equation Solution:
=(9−2)2+(10−4)2‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾√
=(7)2+(6)2‾‾‾‾‾‾‾‾‾‾√
=49+36‾‾‾‾‾‾‾√
=8‾√5
=9.219544
