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tresset_1 [31]
2 years ago
11

ANSWER ASAP PLEASEEE

Mathematics
2 answers:
iren [92.7K]2 years ago
7 0

Answer:

so angle a is 60 and angle c is 80. you add those together to get 140. you then subtract 140 from 180 and you get 40. lastly you divide 40 by 2 and you get 20 for x.

aev [14]2 years ago
3 0

Answer:

join my googl met at uns anre dnb

Step-by-step explanation:

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Write the sum of 5x2 + 2x - 10 and 2x2 + 6 as a polynomial in standard form.
vaieri [72.5K]

Answer:

7x^2+2x-4

Step-by-step explanation:

a standard form is ax+by=c

5x^2 add 2x^2=7x^2 then -2x but when you have a -10 +6 you get -4 giving you the answer of 7x^2 +2x -4

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Solve the following system of equations by substitution.
jasenka [17]

Answer:

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5 0
3 years ago
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3x-4y=-5 y=4x-2 Is (1,2) a solution of the system?
Orlov [11]
If you want to check if (1,2) is a solution to the system, you have to plug the x and y values back into both equations. If they work for one equation, but not the other, than the coordinates are not a solution to the system.

3(1) - 4(2) = -5
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Since both of these checks are true, then (1,2) is a solution to the system.
7 0
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