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Tema [17]
2 years ago
6

If you are conducting a survey to determine which American cities are the most exciting in which to live,

Mathematics
1 answer:
nadezda [96]2 years ago
6 0

Answer:

Step-by-step explanation:

B

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Simplify -23b4+(-7b4)
Rzqust [24]

-30b4 would be your answer.

Hope I helped!

3 0
3 years ago
HELP PLEASE ! TRUE OR FALSE ?!
miss Akunina [59]
This is false because on 2) x does not equal 3. 
8 0
3 years ago
Which of the following are NOT lengths of the sides of a triangle?
Mkey [24]

Answer:

D

Step-by-step explanation:

3 0
2 years ago
Your help is greatly appreciated. Need help please.
ehidna [41]

Answer:

  $13.00

Step-by-step explanation:

Let f represent the price per foot of pasture fence, and p represent the price per foot of picket fence. The two purchases can be written in equation form as ...

  2000f + 450p = 12850

  700f +300p = 6350

Using Cramer's rule, we can find the value of the picket fence as ...

  p = (12850·700 -6350·2000)/(450·700 -300·2000) = -3705000/-285000

  p = 13

The cost per foot of picket fence is $13.00.

_____

<em>Cramer's Rule and Vedic math</em>

The above equation for p is a summary of the math you would be doing if you were to solve the equations by eliminating f. Cramer formulates it in terms of determinants of the coefficients in the equations. Practitioners of Vedic math formulate it in terms of X-pattern combinations of the coefficients in much the same way as finding a determinant. For the equations ...

  • ax +by = c
  • dx +ey = f

The solutions are ...

  ∆ = bd -ea

  x = (bf -ec)/∆

  y = (cd -fa)/∆ . . . . . this is the equation we used above

__

If you do a rigorous comparison of this formula with that of Cramer's rule, you find the signs of numerator and denominator are reversed. That has no net effect on the solution, but it makes the X pattern of products easier to remember for practitioners of Vedic math.

6 0
3 years ago
Solve <br>-2(x + 2)(x - 1)​
Marizza181 [45]

Answer:

-2x^2 -2x + 4

Step-by-step explanation:

Distributive prop.

(-2x-4)(x-1)

-2x^2 + 2x - 4x + 4

-2x^2 -2x + 4

4 0
2 years ago
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