Answer:
The 12 children selected in Mrs. Smith's kindergarten class.
Step-by-step explanation:
A sample is a representative part of a population on which a research is carried out.
The study In Mrs Smith's class was to find out the number of hours the children in Kindergarten Sleep in a day. Out of the total number of students, 12 were selected for observation. The 12 childen selected is therefore a sample of the class.
Answer:
Katie
Step-by-step explanation:
Use seconds as the standard unit to compare the speeds of the 4 runners
Tony is already in standard form and runs 12 ft/s
Katie:
450/30
15 ft/s
Frank:
1 mile = 5280 feet
5280/577
9.15 ft/s
Adam:
I minute = 60 seconds
880/60
14.67 ft/s
- 3/8 + 4/9
= LCM = 72
= - 3 * 9/ 8 * 9 = -27/ 72
= 4 * 8 / 9 * 8 = 32 / 72
= (-27 + 32)/ 72
= 5/72
Answer:
Step-by-step explanation:
The opposite operation of squaring is taking the square root.
We know that the denominator of a fractional power is the index of the corresponding root:
![\displaystyle x^\frac{1}{n}=\sqrt[n]{x}](https://tex.z-dn.net/?f=%5Cdisplaystyle%20x%5E%5Cfrac%7B1%7D%7Bn%7D%3D%5Csqrt%5Bn%5D%7Bx%7D)
For n=2, we don't usually write the index in the root symbol:
In the case of this problem, ...
Susana swam the fastest at 112.4 seconds, if peptic swam the 200m her time would be 120.4
