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mr_godi [17]
3 years ago
10

Which is an irrational number

Mathematics
1 answer:
astraxan [27]3 years ago
8 0

Answer:

C

Step-by-step explanation:

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A chemical manufacturer wishes to obtain 700 litres of a 24% acid solution by mixing a 40% acid solution with a 15% solution. Ho
vekshin1
00 x 0.24 = a x 0.40 + ( 700 -a ) x 0.15 = 0.40 a - 0.15 a + 105.00 
<span>168.00 = 0.25a + 105.00 </span>
<span>a = 252 </span>
<span>Solution with 40% ....................252 liters........................ans </span>

<span>Solution with 15 % ...................700 - 252= 448 liters.........................ans</span>
4 0
3 years ago
What would be the solution to this Pythagorean/Trigonometric equation? (csc² A - 1) sen² A = cos² A
Anna007 [38]

Answer:

(csc^2 A -1) sin^2 A = cos^2 A

We know that csc x= \frac{1}{sin x} and using this identity we have:

\frac{sin^2 A}{sin^2 A} - sin^2 A = cos^2 A

1 = cos^2 A + sin^2 A

And if we remember the equation above represent the fundamental identity in trigonometry and is satisfied for every real number and we can say that the solution for this case is:

A= [X | x \in R]

Step-by-step explanation:

For this case we have the following equation given:

(csc^2 A -1) sin^2 A = cos^2 A

We know that csc x= \frac{1}{sin x} and using this identity we have:

\frac{sin^2 A}{sin^2 A} - sin^2 A = cos^2 A

1 = cos^2 A + sin^2 A

And if we remember the equation above represent the fundamental identity in trigonometry and is satisfied for every real number and we can say that the solution for this case is:

A= [X | x \in R]

8 0
4 years ago
A baker decorates 42 cupcakes in 30 minutes. She decorates cupcakes at a constant rate.
Hatshy [7]
The answer is 1.4 per minutes
3 0
4 years ago
Read 2 more answers
Any help? I’m in class right now it’s buggin me lol
rodikova [14]

Answer:

ok <A is 85°

Step-by-step explanation:

the angle adjacent to 130 is 50 and the angle vertically opposite to 4x-3 is the same thing, their sum, equated to 180 will result in x being 12. put it in the unknown (x) to get <A

4 0
3 years ago
Find the distance between X (-3,8) and Z (-5,1). Round to the nearest tenth if necessary.
RoseWind [281]

9514 1404 393

Answer:

  7.3

Step-by-step explanation:

The distance formula is used for this purpose.

  d = √((x2 -x1)² +(y2 -y1)²)

  d = √((-5-(-3))² +(1 -8)²) = √((-2)² +(-7)²) = √(4+49) = √53

  d ≈ 7.28011 ≈ 7.3 . . . units

XZ ≈ 7.3

4 0
3 years ago
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