Please help. A rectangle's length and width are in a ratio of 7:3. The area is 84 square feet. What are the
1 answer:
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Answer:
x =
Step-by-step explanation:
Given
x -
=
Multiply through by 10 ( the LCM of 5 and 10 ) to clear the fractions
8x - 1 = 3 ( add 1 to both sides )
8x = 4 ( divide both sides by 8 )
x = =
Answer: 0.628
Step-by-step explanation:
Probability of U.S. smartphone owners have made an effort to limit their phone use in the past : p = 0.4702
Sample size : n= 54
Mean :
Standard deviation:
The probability that between 22 and 29 (inclusively) will have attempted to limit their cell phone use in the past will be :
Hence, the required probability = 0.628