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yulyashka [42]
1 year ago
8

Juan wrapped 2 presents every 16 hours. At that rate, how long, in

Mathematics
2 answers:
maks197457 [2]1 year ago
5 0

Answer:

Since it took Juan 16 hours to wrap 2 presents, it will take Juan 32 hours.

1 present- 8 hours

2 present- 16 hours

3 present- 24 hours

4 present- 32 hours

givi [52]1 year ago
5 0

Answer:

32

Step-by-step explanation:

4 divided by 2 is 2

2 time 16 is 32

awnser is 32 stop deleting my stuff

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Plz help its so confusing
aleksklad [387]

Answer:

20, 4

Step-by-step explanation:

Let's assume total number of students registered is n

Last week n/4 people are absent

so people present are n - n/4 = <u>3n/4</u>

Today after return of Jen  1/5 n are absent

so people present are n - n/5 = 4n/5

which is also equal to last week present people + 1 (Jen)

= 3n/4 + 1

= (3n + 4) / 4

so (3n + 4) / 4 = 4n/5

=> 3n + 4 = 4n/5 * 4

=> (3n + 4) * 5 = 16n

=> 15n + 20 = 16n

=> 20 = n

=> n = 20

So total students registered for class is 20

today no of people absent = n/5 = 20/5 = 4

8 0
2 years ago
The heart rate variability​ (HRV) of police officers was the subject of research published in a biology journal. HRV is defined
nexus9112 [7]

Step-by-step explanation:

Consider the provided information.

Part (A) We need to find the confidence coefficient.

The given value or percentage of probability is known as the confidence  coefficient that the interval contains the parameter.

Hence, the confidence coefficient is 0.90

Part (B) Practical interpretation of both of the 99% confidence intervals.

It means that there is 99% confident that the mean of population HRV for officers diagnosed hypertension which lies between 6.9​ and 122.9​

There is 99% confident that the mean of population HRV for officers those are not hypertensive which lies between 144.2 and 184.9.

Part (C)

If you are saying 99% confident that means the 99% of the similarly generated confidence intervals will contain the true value of the population mean in repeated sampling.

Part (D)

If We want to reduce the width of each confidence interval, you need to use smaller confidence coefficient.

8 0
3 years ago
The ratio of the price of a used washer to a new one is 1:3. If the new washer cost $720 how much could you resell it used?
Alja [10]
\bf \begin{array}{ccllll}&#10;used&new\\&#10;\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\&#10;1&3\\&#10;u&720&#10;\end{array}\implies \cfrac{1}{u}=\cfrac{3}{720}\implies \cfrac{720\cdot 1}{3}=u
4 0
3 years ago
Read 2 more answers
Tommy has 5 jars of marble. Each Jar is filled 2/3 with marbles. How many full Jars does tommy have? Make a model and shade in t
ivann1987 [24]

5 / ( 2 / 3 ) = 7.5

7 full jars

6 0
2 years ago
If AB=20, then AB+CD=?​
Leona [35]

Answer:

20*20+CD=400+CD

Step-by-step explanation:

Multiply  

20

by  

20

6 0
3 years ago
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