Answer:
Step-by-step explanation:
a) P(80 < X < 110) for N(100,15)
Mean 100 sd=15
z F (x)
80 -1.333333333 0.09121122
110 0.666666667 0.747507462
P(80<x<110) 0.656296243
b. P(1.50 < X < 2.00) for N(0,1)
z F (x)
1.5 0.933192799
2 0.977249868
P(1.50 < X < 2.00) =0.04406
c. P(4,500 < X < 7,000) for N(6000,1000)
6000 1000
z F (x)
4500 -1.5 0.066807201
7000 1 0.841344746
P(4500<x<7000) 0.774537545
d. P(225 < X < 450) for N(600,100)
600 100
z F (x)
225 -3.75 8.84173E-05
450 -1.5 0.066807201
P(225<x<450) 0.066718784
I believe the answer would be c=12. i hope that’s what the question is asking for lol.
First of all, if you are traveling more, then you will have to take more time to get there. So since the answer A is less than the original number 50 you can rule that choice out. Now to solve, you will put 50 over 55 such as this 50/55. This represents miles/minutes. So next you will put 75/x since we are trying to solve for x (minutes). Now our problem looks like this 50/55 times 75/x. To solve the answer you will need to cross multiply. You will multiply 75 and 55 together to get 4,125. (This will be your numerator, or top number) Next you will multiply 50 and x, this gives you 50. (This will be your denominator, or bottom number. Now you have 4,125/50. Divide your two numbers and you get 82.5! The answer is D. 82.5! Hope I helped!
Answer:
C and D
Step-by-step explanation:
in equations y=4x+9 and y=4x-9 you have the same slope (4) so paralleling is guaranteed.
y=9 and y=18 you can understand as y=0x+9 and y=0x+18, so in this situation you have the same slope (0), so lines y=9 and y=18 are parallel too.
