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ehidna [41]
3 years ago
8

Sam is writing a report on cell phone usage. he collects data from a random sample of eight graders in his school, and finds tha

t 18 out of 20 eight graders have cell phones. if there are 310 eight graders in his school,estimate the number of eighth graders who have cell phones.
Mathematics
1 answer:
nataly862011 [7]3 years ago
4 0
Answer is 279 exact but estimated is 280
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27 divided by 2+3+4+3??
goldenfox [79]

Answer:

3 is the answer have a good day

Step-by-step explanation:

2+3= 5+4 = 9

so it 27/9 what is 3

6 0
3 years ago
Jenny,eric and Boris sent a total of 79 text messages during the weekend Jenny sent 6 fewer messages than Erica Boris sent 3 tim
inna [77]
Lets say that J is for Jennys messages, B is for Boris’ and E is for Erics (or Ericas?).

79 = J + B + E

J = E - 6
B = 3E

Since both Jenny’s and Boris’ number of text messages has some kind of relation to Eric’s number of messages, we can say that:

79 = E - 6 (Jenny) + 3E (Boris) + E (Eric), so:

79 = E - 6 + 3E + E /combine like terms
79 = 5E - 6 /add 6 to both sides
79 + 6 = 5E /switch sides + combine like terms
5E = 85 /divide both sides by 5
E = 85/5
E = 17

So, Eric sent 17 messages. Lets get back to those equations we made for Jenny and Boris:

J = E - 6 = 17 - 6 = 11
B = 3E = 3 * 17 = 51

And we can check if it adds up: 51 + 11 + 17 = 79, which is what we were supposed to get.
8 0
3 years ago
Right answer gets brainlist
Dmitry_Shevchenko [17]
B is the answer I think
4 0
3 years ago
Idk what to do here?
creativ13 [48]

1 box =1 foot so you would have to count the boxes away from her

7 0
3 years ago
Read 2 more answers
What is the integer there are at least 38 women in the house
Elan Coil [88]

1 \frac{1}{?2}
4 0
3 years ago
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