Question

Please help ASAP for both questions

Answer 1

Answer:

A) 129cm B) Because it's not a whole number

Step-by-step explanation:

Part A:

You need to calculate the average, so you will need to use the "t" value

To find the value(s) of t:

120 < t < 124; t = 122

$124 - 120 = 4\\4/2 = 2\\120 + 2 = 122\\t = 122$

124 < t < 128; t = 124

$128 - 124 = 4\\4/2 = 2\\124 + 2 = 126$

128 < t < 132; t = 130

$132 - 128 = 4\\4/2 = 2\\128 + 2 = 130$

132 < t < 136; t = 134

$136 - 132 = 4\\4/2 = 2\\132 + 2 = 134$

136 < t < 140; t = 138

$140 - 136 = 4\\4/2 = 2\\136 + 2 = 138$

Finding the average:

$(122 * 7) + (124 * 8) + (130 * 13) + (134 * 9) + (138 * 3)\\/\\40$

Average = 128.9

But since its an estimate, and I'm assuming its to the near whole number, so 129cm

Part B

My guess is because it's not a whole number.