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Shalnov [3]
3 years ago
6

Solve. (3x)^2 - 7y^2 when x = 3 and y = 2

Mathematics
2 answers:
aleksandr82 [10.1K]3 years ago
7 0
81-28-53 the answer is 53
Dennis_Churaev [7]3 years ago
4 0
The answer is 53. you can substitute x and y in equation

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Find the 10th term of the sequence defined by the rule, f (n) = 4n - 3.
DiKsa [7]

Answer:

<h3>                f(10) = 37</h3>

Step-by-step explanation:

f(n) = 4n - 3

f(10) = 4×10 - 3 = 40 - 3 = 37

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3 years ago
How do you solve<br> -6n-20=-2n+4 (1-3n)
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3 years ago
The circumference of the ellipse approximate. Which equation is the result of solving the formula of the circumference for b?
Serhud [2]

Answer:

b = \sqrt{\frac{C^{2} }{2(\pi )^{2} }  -  a^{2}}

Step-by-step explanation:

Given - The circumference of the ellipse approximated by C = 2\pi \sqrt{\frac{a^{2} + b^{2} }{2} }where 2a and 2b are the lengths of 2 the axes of the ellipse.

To find - Which equation is the result of solving the formula of the circumference for b ?

Solution -

C = 2\pi \sqrt{\frac{a^{2} + b^{2} }{2} }\\\frac{C}{2\pi }  =  \sqrt{\frac{a^{2} + b^{2} }{2} }

Squaring Both sides, we get

[\frac{C}{2\pi }]^{2}   =  [\sqrt{\frac{a^{2} + b^{2} }{2} }]^{2} \\\frac{C^{2} }{(2\pi)^{2}  }   =  {\frac{a^{2} + b^{2} }{2} }\\2\frac{C^{2} }{4(\pi)^{2}  }   =  {{a^{2} + b^{2} }

\frac{C^{2} }{2(\pi )^{2} }  = a^{2} + b^{2} \\\frac{C^{2} }{2(\pi )^{2} }  -  a^{2} = b^{2} \\\sqrt{\frac{C^{2} }{2(\pi )^{2} }  -  a^{2}}  = b

∴ we get

b = \sqrt{\frac{C^{2} }{2(\pi )^{2} }  -  a^{2}}

8 0
3 years ago
Solve for x and show work. Round to the tenths place.
Dafna1 [17]
This is your answer!

5 0
3 years ago
Is Figure B a scale copy of Figure A? Choose 1 answer: A. Yes B. No
Nataliya [291]

Answer:

A Yes

Step-by-step explanation:

the ratio is 2:1

8 0
3 years ago
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