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.
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<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 ...
The solutions are ...
∆ = bd -ea
x = (bf -ec)/∆
y = (cd -fa)/∆ . . . . . this is the equation we used above
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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.
<u>Solution</u><u>:</u> 9:x = x:4
⇛9/x = x/4
By doing cross multiplication, we get
⇛9(4) = x(x)
⇛36 = x²
⇛x² = 36
⇛x = √(36)
⇛x = √(6*6)
∴ x = 6 Ans.
<u>also</u><u> read</u><u> similar</u><u> questions</u><u>:</u><u> </u>Which equations have the same value of x as 2/3(6x+12)=-24? Check all that apply.1. 4x+8=24 2. 9x+18=-24 3. 4x+12=-24 4. 18x+36/2=-24 5. 4x=-36 6. 4x=-32 7. x=-... brainly.com/question/6702722?referrer
<span>0.04088 is the answer.</span>
<u>Answer:</u>
Below!
<u>Step-by-step explanation:</u>
The word "equation" defines that an expression must have an <em><u>equal sign.</u></em><em> </em>This means that the equation is <em><u>y = x.</u></em> The variable 'y' represents <em><u>the distance Michael has climbed.</u></em> The variable 'x' represents <em><u>the time mike hiked.</u></em>
- => y = x
- => 400 ft = 2 hours
- => 200 ft = 2/2 hours
- => <u>200 ft = 1 hour</u>
<u>Hence, 200 ft = 1 hour models the relationship between the time Michael hikes, x, and the distance he climbs, y.</u>
Hoped this helped.
Answer:
Hello again!
Increase 300 by 12% would be 336.00!
Decrease 460 by 25% would be 345!
Step-by-step explanation:
Did the math just earlier, go go! Hope this helps!
