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EleoNora [17]
3 years ago
10

What does 7x^2+12x-3 equal?

Mathematics
1 answer:
Ksenya-84 [330]3 years ago
8 0

Answer:

23

Step-by-step explanation:

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1/1000 but idk for sure

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On a coordinate plane, a line goes through (negative 4, 0) and (4, negative 4). A point is at (2, 3).
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9514 1404 393

Answer:

  (b)  x +2y = 8

Step-by-step explanation:

The only offered line that includes the given point is ...

  x +2y = 8

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We can check the other choices:

  x + 2y = 2 +2(3) = 2+6 = 8 . . . matches B (not A)

  2x +y = 2(2) +3 = 4+3 = 7 . . . . not a choice

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<em>Getting there from scratch</em>

The standard form equation for a line can be written from ...

  (y2 -y1)x -(x2 -x1)y = constant

  (-4 -0)x -(4 -(-4))y = constant . . . . using the given points (-4, 0) and (4, -4)

  -4x -8y = constant

For standard form, we need the leading coefficient to be positive, and we need common factors removed. We can get there by dividing by -4.

  x +2y = constant

The value of the constant will be whatever it takes for the given point to lie on the line. For (x, y) = (2, 3) to be a solution, we must have ...

 x +2y = (2) +2(3) = constant = 8

The desired line has the equation ...

  x +2y = 8

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2 years ago
Read 2 more answers
A survey of 398 children given at a local elementary school showed that 200 like chocolate ice cream 125 like pistachio ice crea
victus00 [196]
148/398 do not like at most one kind of icecream.

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3 years ago
Will mark Brainliest!! :)
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Step-by-step explanation:

The system of equations for eq 1 which is 3x + y = 118 represents the Green High School which filled three buses(with a specific number of students identified as x) and a van(with a specific number of students identified as y) with a total of 118 students.

for eq 2; 4x + 2y = 164; represents Belle High School which filled four buses(with a specific number of students identified as x) and two vans(with a specific number of students identified as y) with a total of 164 students.

The solution represents the specific number of students in the buses and vans in eq1 and eq 2 with x being 36 students and y being 10 students.

substituting 36 for x and 10 for y in eq 1;

3(36) + 10 = 108 + 10 = 118 total students for Green High School

substituting 36 for x and 10 for y in eq2;

4(36) + 2(10) = 144 + 20 = 164 total students for Belle High school

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2 years ago
The pentagons JKLMN and PQRST are similar.<br> Find the length x of PQ????? Help plssss
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Answer:

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Step-by-step explanation:

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