Answer:
Encuentre el archivo adjunto.
Step-by-step explanation:
Answer: B
Step-by-step explanation:
<u>Given:</u>
36=<1.02D-31.2<=41
<u>Solve the compound inequality for D:</u>
36+31.2<=1.02D<=41+31.2
67.2<=1.02D<=72.2
65.9<=D<=70.8
Therefore, option (b) is correct answer
Answer:
x + y +z= 10
Step-by-step explanation:
4x - y = 5 ---------(I)
4y - z = 7 ---------(II)
4z - x = 18 ---------(III)
Add all the three equations,
4x - y + 4y - z + 4z - x = 5 + 7 + 18
4x - x -y + 4y -z + 4z = 30
3x + 3y + 3z = 30
Divide the entire equation by 3
x + y + z = 10
Answer:
126
Step-by-step explanation:
IF THIS IS FOR 40 WHAT IS IT FOR 80
<span>
For maximum area, you've got a square. So 10 x 10. Proof 2x + 2y = 40 x + y = 20 Max xy =Max x(20-x) = Max 20x - x^2 Take 1st derivative and set to zero 20 - 2x = 0 2x = 20 x = 10 So y = 10</span>