Susan, Chang, and Henry sent a total of 127 text messages over their cell phones during the weekend. Chang sent 3 times as many
messages as Henry. Henry sent 7 fewer messages than Susan. How many messages did they each send?
1 answer:
Answer:
c = 72, h = 24, s = 31
Step-by-step explanation:
You can derive the following equations from the text:
s+c+h=127
c=3h
h=s-7
Solving them yields above answer.
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Answer:
D
Step-by-step explanation:
I think D is the answer.
Given: Mean μ = 61.2 and standard deviation σ =21.4
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Z = 
Z = 
Z = 
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The z-score value for 45 rounded to nearest tenth is -0.8
There are 4 vertices of a square to the right.
Second one
<span>7/21
Hope it helps
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