Answer:
Hello! answer: 248
Step-by-step explanation:
1488 ÷ 6 = 248 HOPE THAT HELPS!
“To use proportions to solve ratio word problems, we need to follow these steps:
Identify the known ratio and the unknown ratio.
Set up the proportion.
Cross-multiply and solve.
Check the answer by plugging the result into the unknown ratio.”
I hope this helps.
Srry but u can’t really see the letters dude .-.
Thank you for posting your question above. Based on the situation above the initial post should be "Include a detailed description of the size and shape of the wrapper. (Try using measurements for a real cone to help you come up with the actual size.)" I hope the answer will help.
Answer:
1.844
Step-by-step explanation:
Given that final exam has 20 multiple choices questions. 10 questions have 5 choices and 10 questions have 4 choices.
So we divide the questions into two groups I and II.
The no of correct answers in I is called U.
U is binomial with n =10 and p = 0.2
Similarly II group, V the no of correct answers would be binomial
with n =10 and p = 0.25
Our random variable X= U+V
Obviously U and V are independent.
We have var (U) = npq = 1.6
Var (V) = npq = 1.875
Var(X) = Var(U+V)
= Var(U)+Var(V) since U and V are independent
= 3.4
STd dev (X) = 