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2 years ago

Which is the most appropriate operation to use to solve this problem?

Mathematics

2 answers:

blagie [28]2 years ago

5 0

You would want to use division since you want to separate the cans evenly onto the shelves.

Charra [1.4K]2 years ago

3 0

B.
division

Cause the words:
<span>He has 585 cans to stack evenly on 15 shelves. gives us a clue.

If u ask for the answer it would be 39</span>

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A factory makes car batteries. The probability that a battery is defective is 1/14. If 400 batteries are tested, about how many

Rufina [12.5K]

Answer:

28.6, that is, about 29 are expected to be defective

Step-by-step explanation:

For each battery, there are only two possible outcomes. Either it is defective, or it is not. The probability of a battery being defective is independent of other betteries. So the binomial probability distribution is used to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

The expected value of the binomial distribution is:

$E(X) = np$

The probability that a battery is defective is 1/14.

This means that $p = \frac{1}{14}$

400 batteries.

This means that $n = 400$

How many are expected to be defective?

$E(X) = np = 400*\frac{1}{14} = 28.6$

28.6, that is, about 29 are expected to be defective

3 0

3 years ago

Hi can you help? It’s kinda easy I’m just confused

torisob [31]

Answer: $6.7

Step-by-step explanation:

$6.24 - $12.94 = $6.7

8 0

3 years ago

Find the percent of change. Original: 80, new: 64

lara31 [8.8K]

Hi there!

To find the percent of change we can use the following formula:
$\frac{new - old}{old} \times 100\%$

Let's fill in our data
$\frac{64 - 80}{80} \times 100\% =$

Subtract
$\frac{ - 16}{80} \times 100\% =$

Divide
$- 0.2 \times 100\%$

And finally multiply
$- 20\%$

Hence, the percent of change is negative 20%.
~ Hope this helps you!

3 0

2 years ago

Danny spent $4 on her earnings on an afternoon snack and $16 on a new book afterward she had at least $8 left. wight and any ine

ryzh [129]

Hello!

Danny spent $4 on a snack, $16 on a new book, and has $8 left.

4 + 16 + 8 = $28.

28 - 4 - 16 $\neq$ 28
Enjoy.

Brainliest please?

3 0

3 years ago

WILL GIVE BRAINLIEST: if the roots of the equation x^3 +px^2+qx+r = 0 are 2, 3, and 4, find the values of p, q, and r.

klasskru [66]

8+4p+2q+r=0
27+9p+3q+r=0
64+16p+4q+r=0
P=-9
Q=26
R=-24

5 0

2 years ago