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RUDIKE [14]
3 years ago
5

Plz helpp. In a high school with 5,000 students, the number of text messages sent by each student during a particular month was

recorded. The mean number of text messages sent during the month was 55 per student.
If the data was normally distributed, and if the standard deviation of the data was 4 text messages, which of these is the BEST estimate for the number of students who sent fewer than 51 text messages during the month?


A) 800

B) 1,200

C) 1,600

D) 1,700
p.s i already did it and its a)800
Mathematics
1 answer:
vampirchik [111]3 years ago
8 0

Answer:

A) 800

Step-by-step explanation:

I am on a challenge and I need points plus you told me

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Wich is the greatest six digit number 860,553 or 865,530
Serjik [45]
865,530 is the greatest because the other number, 860,530 has '0' in the place of '5' in the 865,530.
8 0
3 years ago
Read 2 more answers
Based on the graph how many district real number solutions does the equation x^3 -3x^2 +4 = 0​
lawyer [7]

Answer:

Two real number solutions

Step-by-step explanation:

The question is asking "based on the graph, how many times does y=0?"

Then just count how many timesthe graph is on the x-axis.

6 0
3 years ago
Kendra earns $11.60 per hour working at the movie theater. Each week, she donates of
stich3 [128]

Answer:

$9.86

Step-by-step explanation:

First, write both numbers in the same form. Convert 8

1

2

to a decimal.

8

1

2

= 8+

1

2

= 8+

1×5

2×5

= 8+

5

10

= 8+0.5

= 8.5

Multiply.

11.6

× 8.5

580

+ 9280

98.60

Kendra earned $98.60 last week.

Now multiply to find how much money Kendra donated to the charity last week. She earned $98.60, and she donates  

1

10

of her earnings each week.

First, write both numbers in the same form. Convert  

1

10

to a decimal.

1

10

=0.1

Multiply.

98.6

× 0.1

9.86

Kendra donated $9.86 to the charity last week.

7 0
3 years ago
Pls help need it done pls
Harman [31]

Answer:

1/4 +m = 2/3

Step-by-step explanation:

3 0
3 years ago
Given the triangle that has a base of five less than triple the height. The height is 2x+6.
Deffense [45]

Answer:

<h3>          A = 0.5(2x+6)(6x+13) = 6x² + 49x + 78</h3>

Step-by-step explanation:

H = 2x+6          - the hight

3H = 3(2x+6)      - triple the hight

3H-5 = 3(2x+6) - 5    -  five less than triple the height

Area of triangle:  A = 0.5BH

B = 3(2x+6)-5 = 6x + 18 - 5 = 6x + 13

H = 2x+6

So:

    A = 0.5(2x+6)(6x+13) = (x+6)(6x+13) = 6x² + 13x + 36x + 78

    A = 6x² + 49x + 78

5 0
3 years ago
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