City A: {3, 2.5, 4, 4.5, 3, 1} City B: {6, 4, 1.5, 3.5, 2, 4} (b) What is the mean absolute deviation (MAD) for each city? Round to the nearest tenth. Show your work. M. A.D City A: M. A.D. City B: This is 30 points and do not use to find it those are the wrong ones.

answer:

vjjvuvvuufchfxbcjcjcjvk I ucgfd3467uyghrhkgk4o4oti4pyjypruk4kypejtoj3dho3jro3bri3hor3hirhi3gibr3 4the world h5 h tht I 458h4i t8t 68I f3y8f83fyi3fy3yiiyg3e94uh4rhrgrgryryryryu4u4

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places