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

Answer:b

Step-by-step explanation:

Answer:

wow this your first Q

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Because the other two are false.

Answer: 60 degrees / 360 = 1/6

the arc is (1/6)(2pi)radians

Step-by-step explanation:

Number 1

1. Construct AB (Construction)

2. MA = AN = NB = BM (Construction - same radius means same length)

3. MANB is a rhombus (Def. of rhombus)

4. MN is perpendicular bisector of AB (Diagonals bisect each other, Diagonals are perpendicular - properties of rhombus)

Number 2

1-3 are same as first proof

4. AB is perpendicular bisector of MN (Diagonals bisect each other, Diagonals are perpendicular - properties of rhombus)

Hope this helps!

Answer:

424.1175

Step-by-step explanation:

Volume of the total pool = π[tex]r^{2}[/tex]h

                                        = π x [tex]6^{2}[/tex] x 5

                                        = 565.49

needed to fill a 3/4 of the pool = [tex]\frac{3}{4}[/tex] x 565.49

                                                   = 424.1175

Considering the volume of a cylinder, the amount of water needed to fill a 3/4 of the pool is 135π ft³.

Volume is a measure of the space occupied by an object in three-dimensional space, using cubic units to measure it. The volume formula depends on the shape of the figure and its different dimensions.

Volume can be considered as the capacity of a container to hold a quantity of fluid (gas or liquid).

In the case of a cylinder, it is characterized by having two circular bases and a surface that joins the two bases. So the volume of a cylinder is π×r²×h.

In first place, you must know that the length of the radius is half the length of the diameter.

On the other side, it is needed to fill a 3/4 of the pool.

Then, considering the definition of volume and the expression of volume of a cylinder, the amount of water needed is calculated as:

amount of water=(3/4)×π×(12 ft ÷2)²× 5 ft

Solving:

amount of water=(3/4)×π×(6 ft)²× 5 ft

amount of water= 135π ft³

Finally, the amount of water needed to fill a 3/4 of the pool is 135π ft³.

Learn more with this similar problem:

https://brainly.com/question/15051723

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Answer: Marlon

Step-by-step explanation:

[tex]\text{Marlon}:\dfrac{hits}{bats}=\dfrac{6}{15}\quad \rightarrow\quad \dfrac{16}{40}\\\\\\\text{Adrian}:\dfrac{hits}{bats}=\dfrac{4}{10}\quad \rightarrow\quad \dfrac{16}{40}\\\\\\\text{Dustin}:\dfrac{hits}{bats}=\dfrac{3}{8}\quad \rightarrow\quad \dfrac{15}{40}\\[/tex]

Marlon has a higher ratio of 16/40 compared to Dustin's ratio of 15/40.

Answer:

300

Step-by-step explanation:

126:42*100

=3*100

=300

Answer :

A. infinite

4/5 (20x + 5) = 16x - 2

16x + 4 = 16x - 2

16x - 16x = -2 - 4

0x = -6

x = -6/0

x = infinite

The equation has zero solution.

The solution of a linear equation is defined as the points, in which the lines represent the intersection of two linear equations. In other words, the solution set of the system of linear equations is the set of all possible values to the variables that satisfies the given linear equation.

Given here,  the expression as 4/5 (20x+5)=16x-2

                                                   80x+20 = 80x-10

                                                        20 =- 10  which is not possible

Hence, the equation has no solution and thus D is the correct option.

Learn more about solution of a linear equation here:

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#SPJ2

Answer:

To write an analysis of a written text, start by outlining the topics you want to discuss, like the setting, characters, and themes. Additionally, gather quotations to use as evidence for each topic you plan to discuss. Then, begin your analysis with an introduction to summarize the text, followed by a thorough explanation of each topic.

Step-by-step explanation:

Answer:

Step-by-step explanation:

P=6!÷4!(6-4)!=

6!÷48=

15 possible combinations

Hope this helps!

Sorry, he gave you a false answer :/

Answer:

(3,4) and (6,2) could be vertices of a right triangle with (6,4) and (3,2)

(0,0) is on the same line as (6,4) and (3,2) so it doesn't even form a triangle, much less a right triangle.

(3,6) forms a scalene isosceles triangle, but not a right triangle  It's a 4-sqr13-sqr13 triangle

(4.5,3) also forms an abtuse isosceles triangle, but not a right triangle  It's a sqr13 - sqr3.25 - sqr3.25 triangle

Step-by-step explanation:

Answer:

(3,4)    (6,2)

Step-by-step explanation:

Answer:

Looking at the graphic, it seems that B is true.

Exterior Angles BCD and BCA form a linear pair and add to 180 degrees.

Step-by-step explanation:

Answer:

rational

Step-by-step explanation:

A rational number can be expressed in the form

[tex]\frac{a}{b}[/tex] where a and b are integers.

[tex]\sqrt{36}[/tex] = ± 6, and

± 6 × [tex]\frac{2}{3}[/tex] = ± 4 , that is [tex]\frac{4}{1}[/tex] or - [tex]\frac{4}{1}[/tex] ← rational numbers

Answer:

measure of variability

Step-by-step explanation:

Measure of variability shows the extent in which data in a statically distribution differ from an average value as well as how they differ from each other. It shows how much the data falls from the center value (mean) showing the width of the distribution. The most used measures of variability are the range, interquartile range, variance, and standard deviation depending on the data to be measured.

Answer:

-36

Step-by-step explanation:

y=-36x-25

y=mx+b

m=-36

m=slope

Hello there! :)

y+3=-4(9x+7)

This equation is written in point-slope form (y-y1=m(x-x1)

Where m is the slope.

In this case, it's -4.

Hope it helps.

~A lonely teen who helps others with a smile

-Grace :-)

Good luck.

Answer:

D 50. 854 would be the correct answer

Answer:

A

Step-by-step explanation:

there is no symbols, it's just letters

Answer:

3/110

Step-by-step explanation:

Answer:

distributive property

Step-by-step explanation:

The distributive property of multiplication states that when a number is multiplied by the sum of two numbers the first number can be distributed to both of those numbers and multiplied by each of them separately then adding the two products together for the same result as multiplying the first number by the sum

Answer:

distributive property

Step-by-step explanation:

Answer:

Twice as much water will fill twice as many containers. Thus, 1 cup of water will fill \frac43 of a container.

Step-by-step explanation:

Answer: x = 27

Step-by-step explanation:

The angles (4x + 7) and 5(x - 4) are opposite angles formed by intersecting lines.

When intersecting lines form two sets of opposing angles, both pairs are equal in angle measure.

As such, the angles (4x + 7) and 5(x - 4) are equal. Knowing this, you can solve for x by setting the angles equal to each other in an equation:

[tex](4x + 7) = 5(x - 4)\\\\4x + 7 = 5x - 20\\\\27 = x[/tex]

X = 27.

Answer:

The answer is A=4500(1 + (0.052 × 2.5)) = 5085

Step-by-step explanation:

Since that is what you need the answer is C

<12 and <11 are not linear pairs to <14

Explanation:

A linear pair is created when two lines intersect. Two angles are said to be linear if they are adjacent angles formed by two intersecting lines. The measure of a straight angle is 180 degrees, so a linear pair of angles must add up to 180 degrees.

Hope this helps! If you have any more questions or you need further clarification on this question then please comment down below or message me! Good luck!

Answer: Thats not a square.

Step-by-step explanation:

Answer:

49cm²

Step-by-step explanation:

The base of the triagular prism is 7 *7 so 49

Answer:

y = - x^2 + 2x + 5

  = -(x^2 - 2x + 1) + 6

  = -(x - 1)^2 + 6

-(x - 1)^2 always smaller or equal to 0

=> y is smaller or equal to 6

=> Option A is correct

Hope this helps!

:)

Answer:

Easy 800

Step-by-step explanation: