Answer:
The mean is 0.26
The standard deviation is 0.5765
Step-by-step explanation:
An image showing the step by step solution is attached.
Answer:
89.2
Step-by-step explanation:
57.2+32=89.2
Answer:
56
Step-by-step explanation:
The weight of a 170 cm steel bar will be 5 Kg
Step-by-step explanation:
Derek uses a 136 cm flat steel bar that weighs 4 kg to make rack in the garage.
1 kg = 1000 gm
So the weight of 1 cm steel bar will be
kg
Weight of 1 cm bar =
gm
Let the weight of a 170 cm steel bar will be
×
gm
⇒
×
gm
⇒ 5000 gm
⇒5 kg
Hence, the weight of a 170 cm steel bar will be 5 Kg
Make a ratio, then cross multiply.
4/30=x/48
30x=4x48
30x=192
x=6.4