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Vsevolod [243]
3 years ago
7

How do I solve this?

Mathematics
1 answer:
Ghella [55]3 years ago
8 0
The product of the two segments from the two chords are equal.

4(4+5)=(x-2)(x-2+x+4) or 36=(x-2)(2x+2) or x^2-x-20=0 or (x-5)(x+4)=0

So x=5.
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I need help fast... if answered Correctly I will mark brainliest
Lesechka [4]

9514 1404 393

Answer:

  (-5,1)

Step-by-step explanation:

To eliminate x, multiply the first equation by 3 and add 2 times the second equation.

  3(-2x +7y) +2(3x -4y) = 3(17) +2(-19)

  -6x +21y +6x -8y = 51 -38

  13y = 13

  y = 1 . . . . . matches the third answer choice

  (x, y) = (-5, 1)

5 0
3 years ago
Whats complex number ​
Alex

Answer:

Complex numbers are numbers that consist of two parts — a real number and an imaginary number.

3 0
3 years ago
89b - 34 = 411<br> help me new answer
Bess [88]

Answer:

b = 5

Step-by-step explanation:

89b = 411 + 34 (445)

89b = 445

b = 5

3 0
2 years ago
Read 2 more answers
Customers of a phone company can choose between two service plans for long distance calls. The first plan has a $22 monthly fee
vladimir2022 [97]
Company a = 22 + 0.07m
company b = 8 + 0.12m

We are looking for the time when the prices are equal. i.e. the price of company a = the price of company b

company a = company b
22 + 0.07m = 8 + 0.12m
22 - 8 = 0.12m - 0.07m
14 = 0.05m
m = 14/0.05
m = 280

Therefore, the two companies will cost the same if you talk for 280 minutes
5 0
3 years ago
Which property of operation could you use to show whether 7y + 7b + 3y and 7(y x b) + 3b are equivalent or not
Dmitry_Shevchenko [17]

Answer and explanation:

They are not equivalent because if we simplify the second expression, the result isn't the same:

7(y×b)+3b

= 7(yb)+3b

=7yb + 3b

Therefore 7yb+3b≠7y+7b+3y

And even though you meant

7(y+b)+3b

=7y+7b+3b

=7y+10b

7y+10b≠10y+7b

5 0
2 years ago
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