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MAXImum [283]
2 years ago
7

Please help me pleeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaasssssssssssssssssssssss

Mathematics
1 answer:
balandron [24]2 years ago
4 0
B is the correct answer
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chris bought a cup of hot chocolate does his cup probably hold 400 liters or 400 milliliters of hot chocolate
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Answer:

Millileters

Step-by-step explanation:

If it held 400 liters, it would be a pretty gigantic cup

8 0
3 years ago
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25 Trent's watch runs at half the speed itshould. In other words, the hands on thewatch move only a half hour when an hourof tim
sergeinik [125]

Given that Trent's watch runs at half the speed it should run, this implies that

for every hour passed, his watch moves by half an hour.

Hence, for every half-hour passed, Trent's watch moves by 15 minutes.

Hence, when the real time is 10:30 am, Trent's watch will show 9:15 am.

6 0
1 year ago
HELP PLEASE!!!
lbvjy [14]

Answer:

Create equivalent expressions in the equation that all have equal bases, then solve for  

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5/3

Decimal Form:

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1.6

Mixed Number Form:

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7 0
3 years ago
Read 2 more answers
What is the solution of the set?
ziro4ka [17]
x^2=16-4x\ \ \ |+4x\\\\x^2+4x=16\ \ \ \ |+2^2\\\\\underbrace{x^2+2\cdot x\cdot2+2^2}_{(a+b)^2=a^2+2ab+b^2}=16+2^2\\\\(x+2)^2=20\iff x+2=\pm\sqrt{20}\\\\x+2=-\sqrt{4\cdot5}\ \vee\ x+2=\sqrt{4\cdot5}\ \ \ |-2\\\\x=-2-2\sqrt5\ \vee\ x=-2+2\sqrt5

Answer: D.
3 0
2 years ago
A florist determines the probabilities for the number of flower arrangements they deliver each day.
anastassius [24]

Answer:

a) mean = 20.75

b) variance = 1.6274

c) standard deviation = 1.2757

d) 145 arrangements per week.

Step-by-step explanation:

We have the following distribution:

x       19      20    21     22      23

P(x) 0.21  0.22  0.30  0.15    0.12

Mean: Is the average of the data. To find the mean, you need to take every x and multiply it by its corresponding P(x) and sum these values. The result will be the mean.

μ =∑ (x·P(x))

Therefore, in this case we have:

μ = 19(0.21) + 20(0.22) + 21(0.30) + 22(0.15) + 23 (0.12) = 20.75

Thus, the mean is 20.75

Variance: To calculate the variance you need to subtract the mean to every value x, then square the result and multiply it by the probability. Finally, you sum up these results and you get the variance.

In this case we will have

19 - 20.75 = -1.75 ⇒ (-1.75)²(0.21) =<u> 0.6431</u>

20 - 20.75 = -.75 ⇒(0.75)²(0.22) = <u>0.1237</u>

21 - 20.75 = 0.25 ⇒(0.25)²(0.30) = <u>0.0187</u>

22 - 20.75 = 1.25 ⇒(1.25)²(0.15) = <u>0.2344</u>

23 - 20.75 = 2.25 ⇒ (2.25)²(0.12) = <u>0.6075</u>

Now we need to sum up these results:

0.6431 + 0.1237 + 0.0187 + 0.2344 + 0.6075 = 1.6274

The variance is 1.6274.

Standard Deviation: It is the root of the variance.

Therefore, the standard deviation will be √1.6274 = 1.2757

b) How many arrangements should the florist expect to deliver each week, rounded to the nearest whole number?

To answer this question we'll work with the mean, he expects to deliver 20.75 arrangements per day, therefore, per week he'd deliver:

20.75 (7) = 145.25 = 145 arrangements.

7 0
3 years ago
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