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Anna71 [15]
3 years ago
13

here are 5 classes in your grade level. Each class is 6/7 full today. If a full class has 28 students, how many students in your

grade are at school today? _____ students *
Mathematics
2 answers:
Crazy boy [7]3 years ago
6 0

Answer:

A minimum of 24 students if all the students share a class with you. Not enough info to decide the largest size of grade.

Step-by-step explanation:

sweet [91]3 years ago
3 0

Answer:

120

Step-by-step explanation:

28 students normally

28(6/7) = 40 today in one class

40*5 = 120 between all 5 classes

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Tobias sent a chain letter to his friends, asking them to forward the letter to more friends. The number of people who receive t
malfutka [58]

Answer:

  • P(t)=37\times (4)^{(t/9.1)}

Explanation:

The number of emails is multiplied by <em>4</em> every <em>9.1 weeks.</em>

Thus, since <em>Tobias initially sent the chain letter to 37 friends</em>, the number of letters will grow as per this geometric series:

Start:        37 letters

  • In 9.1 weeks: 37 × 4

  • In 2 × 9.1 weeks: 37 × (4)²

  • In 3 × 9.1 weeks: 37 × (4)³

As you see, the exponent is the number of weeks divided by 9.1

Thus, if your variable is the number of weeks, t, then the exponent is t/9.1

And the exponential function, P(t) will be:

   P(t)=37\times (4)^{(t/9.1)}

3 0
3 years ago
Question Help
Murljashka [212]

Answer:

b and a

Step-by-step explanation:

6 0
3 years ago
I need help on number 5 please and thanks
aleksandrvk [35]

in order to get the percentage you would just need to divide 6,840 by 38,000 (6840/38000 = .18)

this gives you .18

.18 is equivalent to 18%

John paid 18% of his earnings on entertainment.

3 0
3 years ago
Please please help me on this question
Delvig [45]
-7x^2 - 6x^2 + 3x + 5x - 5 + 2
-13x^2 + 8x - 3
5 0
3 years ago
If (-1, y) lies on the graph of y= 2^2x, then y=<br> -4<br> 1/4<br> 1
AfilCa [17]

Answer:

1/4

Step-by-step explanation:

Substitute x=-1 to find y

Given y= 2^2x

y(-1)=2^-2=1/(2^2)

7 0
3 years ago
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