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sweet-ann [11.9K]
2 years ago
13

1. Combine the expressions(a) 7x+3+6x +11​

Mathematics
1 answer:
navik [9.2K]2 years ago
6 0
13x+14. Combine like terms (7x+6x=13x) (3+11=14)
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The lay in Burlington collected $3 930 in overdue fees last year. This year, the library
almond37 [142]

Answer:

We conclude that the percent of decrease = 20%

Step-by-step explanation:

Given

  • Original amount = $3930
  • Amount of decrease = $3930 - $3144 = $786

Using the formula

Percent of decrease = ( amount of decrease / orignal amount × 100 ) %

                                   = ( 786 / 3930 × 100 ) %

                                    = ( 0.2 × 100 ) %

                                    = 20%

Therefore, we conclude that the percent of decrease = 20%

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2 years ago
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2 years ago
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arsen [322]

Answer:

No

Step-by-step explanation:

If the lines are perpendicular then they will be the negative reciprocals of each other.

Calculate the slope using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = P(- 8, - 10) and (x₂, y₂ ) = Q(- 5, - 12)

m_{PQ} = \frac{-12+10}{-5+8} = - \frac{2}{3}

Repeat the process with

(x₁, y₁ ) = R(9, - 6) and (x₂, y₂ ) = S(17, - 5)

m_{RS} = \frac{-5+6}{17-9} = \frac{1}{8}

The slopes are not the negative reciprocal of each other, thus they are not perpendicular.

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If you separate the triangles, you'll notice that both are literally the same triangle because all angles are the same.
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3 years ago
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harkovskaia [24]

Answer:

Leena consumed 1,500 calories at dinner

Step-by-step explanation:

The reason the answer is Leena consumed 1,500 calories at dinner is because she consumes 2/3 of her daily calories at dinner.

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