Answer:
C. 4(a + b + 2)
Step-by-step explanation:
2(2a + b) 8 equals 4a + 2b + 8. 4(a + b + 2) equals 4a + 4b + 8
Answer:
I believe the answer is 30.
Step-by-step explanation:
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STEP 1
Find total number of pieces
75 per bag * 3 bags= 225
STEP 2
Divide total number of pieces by 7 friends
225 ÷ 7= 32.14
STEP 3
32 * 7 friends= 224 pieces divided among friends
STEP 4
225 total pieces - 224 pieces divided among friends= 1 pieces left for him
ANSWER: Each friend gets 32 pieces and he has 1 piece left for himself.
Hope this helps! :)
Answer:
d) 65.9 in < μ < 67.1 in.
Step-by-step explanation:
Given that a 99% confidence interval (in inches) for the mean height of a population is 65.7 < μ < 67.3
Mean = average of 65.7 and 67.3 =
i.e. here margin of error =
For 99% confidence interval critical value is 2.58
Hence std deviation =
For 95% confidence interval critical value is 1.96
Margin of error =
Hence confidence interval =
d) 65.9 in < μ < 67.1 in. is right