Answer:
C.banans in a bunch
Step-by-step explanation:
apexs
Answer:
His normal heart rate is 50 beats per minute.
Step-by-step explanation:
Since when it is hibernating it beats 10 times per minute and that is 20 % of the normal volume we can use a rule of 3 to find his normal herat rate. If 10 times per minutes is 20% of its normal volume then x times per minutes is 100%. So we have:
10 -> 20%
x -> 100%
10/x = 20/100
20x = 1000
x = 50 beats per minute
Answer:
50 beats per minute
Step-by-step explanation:
To find the heart hate of a grizzly bear when not hibernating, we need to get the heart rate when hibernating (10 beats per minute) and make it equal to 20% in a rule of three, where we want to know the 100% value (normal heart beat rate):
10 beats per minute -> 20%
X beats per minute -> 100%
10/X = 20/100
X = 100 * 10/20 = 50
-42 = -7x
Answer:
x=6
Step-by-step explanation:
-7x= -42
x= -42/-7
x=6
Answer:
x=6
Step-by-step explanation:
-42= -7x divide -7 on both sides
6=x negatives cancel out
x=6 flip (not necessary but teachers like it this way)
About 8 sixth graders should be chosen.
Direct proportion is a type of proportionality relationship. For direct proportion, as one value increases, so does the other value and conversely, as one value decreases, so does the other value.
Given that, A population of middle school students contains 160 sixth graders, 180 seventh graders, and 140 eighth graders. Nine seventh graders were part of a random sample of the population chosen to participate in a survey.
We know they are in direct proportion,
Number of sixth graders students = 160
Number of seventh graders students = 180
Number of eighth graders students = 140
If 9 seventh graders were part of a random sample of the population chosen to participate in a survey.
Let the number of sixth graders should be chosen to be 'x'.
Since, there will be direct proportion.
180/9 = 160/x
20 = 160/x
x = 160/20
x = 8
Hence, About 8 sixth graders should be chosen.
For more references on direct proportion, click;
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Answer:B-8
Step-by-step explanation:BECAUSE it was for me
no real solutions
one real solution
two rational solutions
two irrational solutions