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baherus [9]
3 years ago
11

Dave bought 4 cookies at a bake sale if each cookie cost 0.85 and he paid with a twenty dollar bill how much change should he ge

t back
Mathematics
2 answers:
ValentinkaMS [17]3 years ago
7 0

Answer:

$16.6 dollars back

Step-by-step explanation:

The answer is $16.6 because 0.85 times 4 is 3.4 and 20 minus 3.4 is 16.6

beks73 [17]3 years ago
5 0

Answer:

$16.60

Step-by-step explanation:

4 x 0.85 = $3.40

20 - 3.40 = 16.6

Dave should get back $16.60 in change.

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Step-by-step explanation:

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3 years ago
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Half of a set of the parts are manufactured by machine A and half by machine B. Ten percent of all the parts are defective. Six
baherus [9]

Answer:

The probability that a part was manufactured on machine A is 0.3

Step-by-step explanation:

Consider the provided information.

It is given that Half of a set of parts are manufactured by machine A and half by machine B.  

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Let d represents the probability that part is defective.

Ten percent of all the parts are defective.

P(d) = 0.10

Six percent of the parts manufactured on machine A are defective.

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Now we need to find the probability that a part was manufactured on machine A, and given that the part is defective :

P(A|d) =\frac{P(A \cap d)}{P(d)}

P(A|d) =\frac{P(d|A)\times P(A)}{P(d)}\\P(A|d)= \frac{0.06\times 0.5}{0.10}

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8 0
3 years ago
Which of the following are steps to use when formulating an equation? Check all that apply.
Ber [7]

Answer:

A and B

Step-by-step explanation:

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3 years ago
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The costs for going to a dog are $7 for 1 dog, and $2 for each additional dog. Write an equation to show this situation, where x
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4 years ago
Which expression is equivalent to (4 × 8) + (4 × 3)?
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Answer:

D.

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