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3 years ago

Need help with this question plz.Will Give BRAINLIEST

Mathematics

1 answer:

Ierofanga [76]3 years ago

5 0

For the first one his car used 8/340 or 2/85 gallons for one mile.

After the fix, his car 7/350 or 1/50 gallons for one mile.

Then you subtract 1/50-2/85 to get (17-10)/850 or 7/850.

You multiply this by 4 to get 28/850 which is $0.0329411

Since it is asking for cents you multiply by 100 to get approximately 3 cents.

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You have two biased coins. Coin A comes up heads with probability 0.1. Coin B comes up heads with probability 0.6.However, you a

Andrews [41]

Answer:

The probability that our guess is correct = 0.857.

Step-by-step explanation:

The given question is based on A Conditional Probability with Biased Coins.

Given data:

P(Head | A) = 0.1

P(Head | B) = 0.6

By using Bayes' theorem:

$P(B|Head) = P(Head|B) \times \frac{P(B)}{P(Head)}$

We know that P(B) = 0.5 = P(A), because coins A and B are equally likely to be picked.

Now,

P(Head) = P(A) × P(head | A) + P(B) × P(Head | B)

By putting the value, we get

P(Head) = 0.5 × 0.1 + 0.5 × 0.6

P(Head) = 0.35

Now put this value in $P(B|Head) = P(Head|B) \times \frac{P(B)}{P(Head)}$ , we get

$P(B|Head) = P(Head|B) \times \frac{P(B)}{P(Head)}$

$P(B|Head) = 0.6 \times \frac{0.5}{0.35}$

$P(B|Head) = 0.857$

Similarly.

$P(A|Head) = 0.857$

Hence, the probability that our guess is correct = 0.857.

7 0

3 years ago

There are 21 more green crayons than blue crayons. There are 14 blue crayons. How many green crayons are there?

dimaraw [331]

Answer:

35 green crayons

Step-by-step explanation:

g is number of green crayons

b is number of blue crayons

g = b + 21

plug in 14 for b:

g = 14 + 21

g = 35

35 green crayons

3 0

3 years ago

Read 2 more answers

What is negative eight plus four

goldenfox [79]

Answer:

-4

Step-by-step explanation:

- - - - - - - -

+ + + +

4 negatives cancel out and leave you with -4

6 0

3 years ago

Read 2 more answers

Describe how to combine like terms in the expression 3n + 4n -2

storchak [24]

You can combine the same numbers with the same variables using the operation sign for each. For example, using your equation, you would combine the 3n and 4n which is 7n. So your equation would be
7n - 2

5 0

3 years ago

Read 2 more answers

At which root does the graph of f(x) = (x - 5)3(x + 2)2 touch the x-axis? BB -2 2

Svetlanka [38]

Answer:

-2

Step-by-step explanation:

if x=- 2 then f(x)=(-2-5)3(-2+2)=0

so x=-2 is correct

3 0

2 years ago