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exis [7]
2 years ago
6

Evaluate the algebraic expression 18 + (- 31) =

Mathematics
1 answer:
frosja888 [35]2 years ago
8 0

Answer:

-13

Step-by-step explanation:

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Consider the equation 30÷x=6.
8090 [49]
Part A : 30 - x - x - x - x - x - x = 0

^ since 30 divided by 5 is 6, that answer is the same as doing 5 + 5 + 5 + 5 + 5 + 5

- pls comment & correct me if i did smth wrong :’)
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2 years ago
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A company produces two types of solar panels per year: x thousand of type A and y thousand of type B. The revenue and cost equat
jolli1 [7]

Answer:

  • 7000 type A
  • 6000 type B

Step-by-step explanation:

We assume your equations are intended to be ...

C(x,y)=x^2-2xy+9y^2+3x-87y-6\\R(x,y)=5x+7y

Then the profit equation is ...

P(x,y)=R(x,y)-C(x,y)=5x+7y-x^2+2xy-9y^2-3x+87y+6\\=-x^2+2xy-9y^2+2x+94y+6

The partial derivatives of profit with respect to x and y are zero when profit is maximized.

  ∂P/∂x = 0 = -2x +2y +2

  ∂P/∂y = 0 = 2x -18y +94

Simplifying, these equations are ...

  • y = x -1
  • x -9y = -47

Substituting the first into the second gives ...

  x -9(x -1) = -47

  -8x = -56

  x = 7

  y = 7 -1 = 6

The company will maximize profit by selling 7000 panels of type A and 6000 panels of type B.

5 0
3 years ago
17. Subtract the quotient of 18 and 2 from the sum of 22 and 9.
Effectus [21]

Answer:

B. 22

Step-by-step explanation:

Quotient of 18 and 2 is 9, and just take the 9 out of the next series and you will be left with 22.

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3 years ago
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If 5x+6=10 what is the value of 10x+3
Sedaia [141]
11 is the answer to the question
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3 years ago
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PLS HELP. BRAINLIEST/5 STARS TO CORRECT ANSWER
fenix001 [56]

Where p is the distance the focus is above the vertex, the equation of a parabola with vertex (h, k) can be written as

... y = 1/(4p)·(x -h)² +k


The vertex is halfway between the focus and directrix. The focus of your parabola is on the y-axis at y=6, and the directrix of your parabola is at y=-6, so the vertex of your parabola is on the y-axis at y=0. That is, the vertex is

... (h, k) = (0, 0).


The distance p from the focus at y=6 to the vertex at y=0 is 6 units, so

... p = 6.


Filling these values into the equation gives

... y = 1/(4·6)·(x -0)² +0

... y = (1/24)x²

5 0
3 years ago
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