Answer:
I really don't know but i think its b i tried putting it in my calculator but it says nothing can be done with this equation.
Step-by-step explanation:
Answer:
Range = 13
Mean = 8.4
Variance= 21.24
Standard deviation= 4.61
Step-by-step explanation:
2, 10, 15, 3, 13, 9, 14, 7, 2, 9
For the range
Let the set of data be arranged inn ascending order
Range= higehest value- lowest value
Range = 15-2
Range= 13
For the mean
Mean = (2+2+3+7+9+9+10+13+14+15)/10
Mean = 84/10
Mean = 8.4
For variance
Variance=((2-8.4)²+(2-8.4)²+(3-8.4)²+(7-8.4)²+(9-8.4)²+(9-8.4)²+(10-8.4)²+(13-8.4)²+(14-8.4)²+(15-8.4)²)/10
Variance= (40.96+40.96+29.16+1.96+0.36+0.36+2.56+21.16+31.36+43.56)/10
Variance= 212.4/10
Variance= 21.24
Standard deviation= √variance
Standard deviation= √21.24
Standard deviation= 4.609
Approximately = 4.61
Wouldn't you just multiply 120 by 0.95
Answer:
Option A.
Step-by-step explanation:
Definition of Boyle's law: a law stating that the pressure of a given mass of an ideal gas is inversely proportional to its volume at a constant temperature. There is thus a relationship between volume and pressure of the gas thus option B and C are incorrect.
17. He needs 2cupsof flour to make 20 biscuits so he needs x cups if flour to make 30 biscuits
So he needs 3 cups of flour to make 30 biscuits.
So the answer is B
18. She charges 30$ for 2 hours so she charges x$ for 5hours.
so she charges 75$ for 5 hours.
So the answer is I
19. (an hour is 60 minutes)
She walks 2 blocks in 15 minutes so she walks x blocks in 60 minutes.
So she walks 8 blocks in 60 minutes.
So; the answer is: 8
please mark as brainliest.