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Nutka1998 [239]
2 years ago
11

I need help now :) ...........

Mathematics
1 answer:
vaieri [72.5K]2 years ago
3 0

Step-by-step explanation:

-2x² + 5x - 3 - (-7 - 9x + 5x²)

= -2x² + 5x - 3 + 7 + 9x - 5x²

= -7x² + 14x + 4.

Hence the coefficient of the x term is 14.

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∠1 ​ and ∠2 are supplementary. ∠1=124°∠2=(2x+4)° Select from the drop down menu to correctly answer the question.
Alex_Xolod [135]
Remark
Supplementary angles add up to 180o. 

Givens
<1 = 124
<2 = 2x + 4

I imagine you are looking for either x or <2. 

Equation
<1 + <2 = 180          Substitute the givens
124 + 2x + 4 = 180  Collect like terms on the left.
128 + 2x = 180         Subtract 128 from both sides
2x = 180 - 128          Collect like terms on the right   
2x = 52                     divide by 2
x = 52/2
x = 26 <<<<<<<<< answer

<1 = 124
<2 = 2x + 4 = 2*26 + 4
<2 = 52 + 4
<2 = 56  <<<<<<<< answer

We need choices if you want an exact answer.

3 0
3 years ago
You and 4 friends meet to have dinner at your favourite restaurant. Everyone decides to order the nightly special. Write an expr
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Answer:

5x

Step-by-step explanation:

1 plus 4 is 5 and everyone is ordering the same thing, which is known as any variable, so in this case, x. So, you get 5x

6 0
3 years ago
HELP, ASAP PLS. 24 POINTS.
Afina-wow [57]
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V125BC [204]
(2,1)

I first used substitution to get my answer and then used graphing to check. You can easily get a graphing equation by rearranging the second equation.<span />
4 0
3 years ago
Read 2 more answers
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Answer:

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18 seconds on day 1

44-18=26

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