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cestrela7 [59]
4 years ago
7

Two large containers A and B of the same size are filled with different fluids. The fluids in containers A and B are maintained

at 0° C and 100° C, respectively. A small metal bar, whose initial temperature is 100° C, is lowered into container A. After 1 minute the temperature of the bar is 90° C. After 2 minutes (since being lowered into container A) the bar is removed and instantly transferred into the other container. After 1 minute in container B the temperature of the bar rises 10°. How long, measured from the start of the entire process, will it take the bar to reach 99.7° C? (Round your answer to two decimal places. Assume the final temperature being asked for is reached while the bar is container B.) t = min
Mathematics
1 answer:
svet-max [94.6K]4 years ago
8 0

Answer:

What I think, Is that it... It might be, It can take 3 seconds

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-2(6 - 3n) + 27n = -3(n - 8)
Rama09 [41]

Answer:

n=1

Step-by-step explanation:

-2(6 - 3n) + 27n = -3(n - 8)

-12+6n+27n=-3n+24

-12+33n=-3n+24

----------------------------

33n=-3n+36

+3     +3

-------------

36n=36

----    ----

 n=1

5 0
3 years ago
Read 2 more answers
Select the correct answer.
alexira [117]

Answer:

\huge\boxed{A.\ -\dfrac{9}{4}+2i}

Step-by-step explanation:

The standard form of a complex number:

z=a+bi\\\\a,\ b\in\mathbb{R}

3i+\left(\dfrac{3}{4}+2i\right)-(3+3i)=3i+\dfrac{3}{4}+2i-3-3i\\\\=\left(\dfrac{3}{4}-3\right)+(3+2-3)i=-2\dfrac{1}{4}+2i=-\dfrac{9}{4}+2i

3 0
3 years ago
Of the 37 teachers at Francesca's high school, 9 are female. What is the ratio of the number of male teachers to the total numbe
kvv77 [185]

Answer:

28 : 37

Step-by-step explanation:

Find how many male teachers there are by subtracting 9 from 37:

37 - 9

= 28

Create a ratio with this to the total number of teachers:

28 : 37

So, the ratio of the number of male teachers to the total number of teachers is  28 : 37.

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Nesterboy [21]

Answer:

C) The volume of the prism is equal to the volume of the cylinder.

Step-by-step explanation:

volume of triangular prism = area of base × height

volume of cylinder = area of base × height

The cross sectional area are equal, so the bases have the same area.

The heights are also equal.

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2 years ago
A manager of a fast food restaurant wants the drive-thru employee to ask every fifth customer if he or she is satisfied with the
Ira Lisetskai [31]

Options:

A.

All survey respondents

B.

The proportion of customers who say they are satisfied with their service

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