Step-by-step explanation:
0.6x- 1.2x = 6
-0.6x = 6
x = 6/0.6
x = -10
Answer:
1,3,4
Step-by-step explanation:
all the others were wrong
Answer:
Stratified random sampling is based on a subdivision of the sample framework into strata with the help of an observable variable that separates them. After forming the strata, each individual is located in one and only one stratum. The sample is established by selecting a certain number of individuals in each stratum, guaranteeing a contribution of each stratum in the information obtained.
The best sampling method, in this case, is Stratified Random.
Step-by-step explanation:
Answer:
it is not a right triangle because 130 does not =121
Answer:
There are plenty of numbers that can multiply with 28 to create a perfect square.
The smallest perfect square could be created as following:
We have: 28 = 4 x 7 = 2^2 x 7 (2 and 7 are prime numbers).
=> Another 7 is left to create a perfect square.
=> The smallest one among possible solutions is 7
Check:
28 x 7 = 196 = 16^2 (valid)
Hope this helps!
:)