<u>Answer</u>:
b = 4a
<u>Step-by-step explanation</u>:
<em>changing sides changes sign division to multiplication.</em>
Answer:
the probability that two 18 year old boys chosen at random will have heights greater than 185cm is 0.403
Step-by-step explanation:
P( x > 193) = 0.15
= 1- p(x less than or equal 193)
= 1 -p( z < (x- u) /sigma)
= 1- p( z< (193 - 187)/ sigma)
= 1- p( z< 6/ sigma)
P(z< 6/sigma) = 1 - 0.15
P(z < 6/sigma)= 0.85
6/sigma =1.036
Sigma= 6/1.036
Sigma= 5.79
P( x> 185) = 1- p( x< 185)
= 1- p (z < (185- 187)/5.79)
= 1- p( z< -0.345)
= 1- 0.365
= 0.635
P (x> 185) = 0.635 × 0.635
=0.403
Answer:
The ratio is 10 : 1, or 10 to 1
Step-by-step explanation:
Answer:
w = 2
Step-by-step explanation:
2(4w - 1) = -10(w - 3) + 4
8w - 2 = -10w + 30 + 4
8w - 2 = -10w + 34
+10w +10w
18w - 2 = 34
+2 +2
<u>18w</u> = <u>36</u>
18 18
w = 2