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Viktor [21]
2 years ago
13

A pillow that usually costs $20 is marked down 45%.

Mathematics
2 answers:
sweet-ann [11.9K]2 years ago
6 0

Answer:

11 dollars is the answer

Step-by-step explanation:

45% of 20$

= 45/100 × 20

= 0.45 × 20

= 9

you get a 9 dollar discount

20-9=11

the answer is 11

IceJOKER [234]2 years ago
4 0

Answer: $11

Step-by-step explanation:

So 45% is less than 50% which would be $10.

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What is the likelihood that a fair coin will land heads or tails?
Marina CMI [18]

Answer:

I believe it is 0.5

Step-by-step explanation:

If you flip a normal coin (called a “fair” coin in probability parlance), you normally have no way to predict whether it will come up heads or tails. Both outcomes are equally likely. There is one bit of uncertainty; the probability of a head, written p(h), is 0.5 and the probability of a tail (p(t)) is 0.5. The sum of the probabilities of all the possible outcomes adds up to 1.0, the number of bits of uncertainty we had about the outcome before the flip. Since exactly one of the four outcomes has to happen, the sum of the probabilities for the four possibilities has to be 1.0. To relate this to information theory, this is like saying there is one bit of uncertainty about which of the four outcomes will happen before each pair of coin flips. And since each combination is equally likely, the probability of each outcome is 1/4 = 0.25. Assuming the coin is fair (has the same probability of heads and tails), the chance of guessing correctly is 50%, so you'd expect half the guesses to be correct and half to be wrong. So, if we ask the subject to guess heads or tails for each of 100 coin flips, we'd expect about 50 of the guesses to be correct. Suppose a new subject walks into the lab and manages to guess heads or tails correctly for 60 out of 100 tosses. Evidence of precognition, or perhaps the subject's possessing a telekinetic power which causes the coin to land with the guessed face up? Well,…no. In all likelihood, we've observed nothing more than good luck. The probability of 60 correct guesses out of 100 is about 2.8%, which means that if we do a large number of experiments flipping 100 coins, about every 35 experiments we can expect a score of 60 or better, purely due to chance.

6 0
3 years ago
Read 2 more answers
A certain backpack costs $22, and there is 4% sales tax. What is one way to determine what the amount of sales tax will be? Sele
Mademuasel [1]

Answer:

$0.88

Step-by-step explanation:

cost per 1% = 22 ÷ 100 = 0.22

⇒ cost of 4% = 4 x 0.22 = 0.88

Or

4% = 4/100 = 0.04

⇒ 4% of 22 = 0.04 x 22 = 0.88

Step-by-step explanation:

8 0
2 years ago
Which is the best approximation for the value of 160−−−√?
melamori03 [73]

Answer:

divide

Step-by-step explanation:

4 0
3 years ago
How many 25 milliliter doses of plant food can Tim get from a 1-liter bottle of plant food?
Harlamova29_29 [7]

For this case, the first thing we should do is take into account the following conversion:

1L = 1000ml

Therefore, the 25 ml dose number is given by:

N = \frac {1000} {25}\\N = 40

Answer:

The number of doses that can be obtained from a bottle of 1 liter of vegetable food is:

N = 40

6 0
3 years ago
6(x-7) (9x+8) find the product
tester [92]
Answer: 54x^2 - 330x - 336

step by step explanation:

6 (x-7) x (9x+8)

distribute 6 through the parentheses

(6x - 42) x (9x+8)

multiply the parentheses

54x^2 + 48x - 378x -336

collect like terms

54x^2 - 330x - 336

and thats your answer
hope this helps you :)
4 0
3 years ago
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