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LuckyWell [14K]
3 years ago
9

Wärmelehre - German 20 Words

Mathematics
1 answer:
Elenna [48]3 years ago
4 0

Answer:

Step-by-step explanation:

a steel batch of t = 830 c is quenched in an oil bath (mol = 450kg / tol = 20c). What is the maximum mass of steel in kg allowed in the batch. Have the oil not heated up to more than 30 c?

useful data: ol c = 1.8kj / (kg.K)

steel: c = 0.49kj / (kg.K m steel = <u>        </u> kg

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Can someone please help with these volume equations? 10th grade geometry. will reward brainly
prisoha [69]

Answer:

First picture - 20.42 m

Second picture - 12.9 m

Step-by-step explanation:

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

Formula for pyramid:

V=b^2\frac{h}3

Where,

b = base - 3.5 m

h = height - 5 m

Thus,

V=3.5^2\frac{5}{3}

20.41667m^3 ≈ 20.42m^3

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

Formula for pyramid:

V=b^2\frac{h}3

Where,

b = base - 3 m

h = height - 4.3 m

Thus,

V = 3^2\frac{4.3}{3}

12.9m^3

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

<u><em>Kavinsky</em></u>

6 0
2 years ago
Fill in the blanks to rewrite the following statement with variables: Given any positive real number, there is a positive real n
sveticcg [70]

Answer:

a) there is s such that <u>r>s</u> and s is <u>positive</u>

b) For any <u>r>0</u> , <u>there exists s>0</u> such that s<r

Step-by-step explanation:

a) We are given a positive real number r. We need to wite that there is a positive real number that is smaller. Call that number s. Then r>s (this is equivalent to s<r, s is smaller than r) and s is positive (or s>0 if you prefer). We fill in the blanks using the bold words.

b) The last part claims that s<r, that is, s is smaller than r. We know that this must happen for all posirive real numbers r, that is, for any r>0, there is some positive s such that s<r. In other words, there exists s>0 such that s<r.

3 0
3 years ago
Pls help me answer this question i need it asap. This is a good offer :)
tensa zangetsu [6.8K]

<u>Answer:</u>

  • The product is 21/32.

<u>Step-by-step explanation:</u>

<u>Write the product:</u>

  • => 2 5/8 x 2/8

<u>Convert it to improper fraction:</u>

  • => 21/8 x 2/8

<u>Multiply:</u>

  • => 42/64

<u>Simplify:</u>

  • => 21/32

Hence, <u>the product is 21/32.</u>

Hoped this helped.

BrainiacUser1357

7 0
2 years ago
Read 2 more answers
Geometry questions....help me someone please
AlekseyPX

Answer:

Triangle 1: x = 80 degrees, acute

Triangle 2: x = 10 degrees, right

Step-by-step explanation:

Triangle 1:

By the Sum of Interior Angles Theorem, all the angles inside the triangle adds up to 180 degrees. So, set up this equation:

60 + 40 +x = 180

Solve for x:

100 + x = 180\\x = 80

So, x = 80 degrees

Because all the angles are less than 90 degrees, this is an acute triangle.

Triangle 2:

By the Sum of Interior Angles Theorem, all the angles inside the triangle adds up to 180 degrees. So, set up this equation (with the right angle given):

3x + 60 + 90 = 180

Solve for x:

3x + 150 = 180\\3x = 30\\x = 10

So, x = 10 degrees

Because there is an angle measuring 90 degrees, this is a right triangle.

8 0
1 year ago
Read 2 more answers
This is homework. please help with the answer for both 11a and 11b :))
RideAnS [48]
11a:
3x+5=5x-57
3x-5x=-57-5
-2x=-62
x=31
11b:
2x+2x+4x+150+4x+150=360
12x+300=360
12x=360-300
12x=60
x=5

hope this helped !!
3 0
3 years ago
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