Which of the following could be the areas of the three squares below?

Answer:

(10.891; 15.869)

Step-by-step explanation:

Given the data::

15, 11, 19, 24, 6, 18, 20, 15, 18, 12, 14, 19, 5, 21, 12, 11, 8, 10, 7, 2, 14

The confidence interval is obtained using the relation :

Mean ± margin of error

Margin of Error = Zcritical * s/sqrt(n)

Using a calculator, the mean value of the data and standard deviation above is :

Mean = Σx / n ; n = sample size

Mean, xbar = 281 / 21

Mean = 13.38

Standard deviation , s = sqrt[Σ(X - xbar)²/ n-1]

Standard deviation, s = 5.82

Margin of Error = Zcritical * s/sqrt(n)

Zcritical at 95% confidence level = 1.96

Margin of Error = 1.96 * 5.82/sqrt(21) = 2.489

Confidence interval :

Mean ± margin of error

13.38 ± 2.489

Lower boundary = (13.38 - 2.489) = 10.891

Upper boundary = (13.38 + 2.489) = 15.869

(10.891; 15.869)

Answer:

yeah my boy i think your right

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

Answer:D

Step-by-step explanation:

Answer: B.) 43

I just did it on usatestprep and I got 43

Step-by-step explanation:

The solution is Option B.

The time it took for Diane to complete her route on Thursday is given by the equation T = 43 minutes

The mean value in a set of numbers is the middle value, calculated by dividing the total of all the values by the number of values.

Mean = Sum of Values / Number of Values

Given data ,

Let the mean of the data be represented as M = 46 minutes

The time it took for Diane to complete her route on Thursday be T

Now , the total time for all the 7 days be represented as S

And , the value of S is

S = 58 + 39 + 42 + 46 + T + 49 + 45

S = 279 + T

Substituting the values in the equation , we get

Mean = Sum of Values / Number of Values

46 = ( 279 + T ) / 7

Multiply by 7 on both sides of the equation , we get

322 = 279 + T

Subtracting 279 on both sides of the equation , we get

T = 322 - 279

T = 43 minutes

Hence , the value of T is 43 minutes

To learn more about mean click :

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Answer:

Part 1: f(x)=0 has 0 solutions

Part 2: g(x)=0 has 2 solutions

Part 3: h(x)=0 has 1 solution

I graphed them

Answer:

64

Step-by-step explanation:

Volume of one sugar cube = 1x1x1= 1cm³

Volume of dish = 4x4x4 = 64cm³

Divide volume of dish by volume of one cube to find out how many can fit:

64/1 = 64

Answer:

3rd limited

Step-by-step explanation:

Answer:

1- Create a Distraction Free Study Environment. Mathematics is a subject that requires more concentration than any other.  

2- Master the Key Concepts.  

3- Understand your Doubts.  

4- Apply Maths to Real World Problems.  

5- Practice, Practice and Practice even more.

Answer:

The number of days and total miles run one.

Step-by-step explanation:

A proportional relationship is y/x being the same everytime. The first table doesnt fit with that. The second graph isnt a straight line. The third table isnt coreect either. Lastly the forth table workng.

Sorry if im incorrect

Answer:

both of em

Step-by-step explanation:

Answer:

the 3rd one

Step-by-step explanation:

Answer:

F

Step-by-step explanation:

answer:

shape f !

step-by-step explanation:

hi there!

the question is asking us which shape matches shape a right, now if we look closely we already know that shapes d and b look like they match each other rather then shape a

shape a - 2, 2, 4

so they are out of the equation ( checking how long the sides are )

shape d - 3, 3, 3

shape b - 3, 3, 3

shapes e and c look like they match each other but just to make sure, i counted how long the each side was for both of them

( going by blocks )

shape c - 2, 3, 4,

shape e - 2, 3, almost 5

which does leave us left with shape f, but just to make sure.. lets count it!

shape f - 2, 2, 4,

which is the same numbers that shape a has!

shape f = shape a

hope this helps you!! and if i made a mistake reading the problem or doing the problem then please tell me :) have a good day

Answer:

43200

Step-by-step explanation:

2(60*80)

2(80*120)

2(60*120)

add that up

Answer:

43,200

Step-by-step explanation:

I used a surface area calculator, but the formula it gives is

A (2wl+hl+hw), w is width, h is height and l is length. Hope this helps!

Answer:

D

The numbers are already in order so you don't need to do anything

Answer:

its b for me but d for yall

Step-by-step explanation:

all you do is count up hope this helps can u mark me brainlest

Answer:

5 i think

Step-by-step explanation:

Answer:

A) 1 Yellow, 2 Blue

B) 2 Yellow, 1 Blue

9514 1404 393

Answer:

Step-by-step explanation:

A graphing calculator answers these questions easily.

The ball achieves a maximum height of 40 ft, 1 second after it is thrown.

__

The equation is usefully put into vertex form, as the vertex is the answer to the questions asked.

  h(t) = -16(t^2 -2t) +24

  h(t) = -16(t^2 -2t +1) +24 +16 . . . . . . complete the square

  h(t) = -16(t -1)^2 +40 . . . . . . . . . vertex form

Compare this to the vertex form:

  f(x) = a(x -h)^2 +k . . . . . . vertex (h, k); vertical stretch factor 'a'

We see the vertex of our height equation is ...

  (h, k) = (1, 40)

The ball reaches a maximum height of 40 feet at t = 1 second after it is thrown.

Answer:

d = -6

Step-by-step explanation:

common difference, d = -7-(-1) = -6

Answer:

f(x)=x(x-6)(x+3)

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

What you do on one side of the equation, you do to the other. She added 10x on the right side and subtracted 10x on the left when she should have added 10x on both sides.

Answer:

3/5

Step-by-step explanation: its on the page the yellow text you add the top numbers but the bottem number stays the same

Answer:

56

Step-by-step explanation:

6^2 = 36

36 + 15 = 51

51 + 4 = 56

Answer:

(assuming the. values are the shaded areas)

area = x^2 + 2x +2

perimeter = 4x + 8

Step-by-step explanation:

you have all the side except the side of the 2 squares at the top.

The squares are 1 unit on each side because the area of the 2 slender rectangles on each side is x.

So the area is x^2 + x + x + 1 + 1

The perimeter is 1+x+1+1+1+x+1+1+1+x+1+x

(starting from the lower left side and walking around the perimeter clockwise)

Answer:

15

Step-by-step explanation:

30 + 4x=90

4x=60

x=15

Answer:1/2

Step-by-step explanation:3/4 equals 75% but 1/2 equals 50%

Answer:

I don't know how to do it the subject

Answer:

option a. SAS

......................

for a minute i thought it was c. y = -3x + 2.

Answer:hmmvb

Step-by-step explanation:

Answer:32?

Step-by-step explanation: