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3 years ago

Winne has 7 soccor trophies she was to display them in an array how many different arrays are possible explain

1 answer:

3 0

5040 different ways that winni could possibly arrange them but it also depends on the space of Winnie’s room and how she wants to arrange them

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A cube has a volume of greater then 125 cm to the third power. What are the possible lengths of the side of that cube?

e-lub [12.9K]

Volume=legnthn times width times height
a cubes legnth=width=height
therefor
volume=legnth^3
volume is greather than 125
125<legnth^3
cube root both sides
5<legnth
th elegnth is anything greather than 5
an example of some numbers are
6,7,30,3240958049238043284023848239048023843,

6 0

3 years ago

The manager of a fleet of automobiles is testing two brands of radial tires and assigns one tire of each brand at random to the

Darya [45]

Answer:

Brand 1 Brand 2 Difference

37734 35202 2532

45299 41635 3664

36240 35500 740

32100 31950 150

37210 38015 −805

48360 47800 560

38200 37810 390

33500 33215 285

Sum of difference = 2532+ 3664+740+150 −805+ 560 +390 +285 = 7516

Mean = $d=\frac{7516}{8}$

Mean = $d=939.5$

a) d= 939.5

$\text{Sample Standard deviation, s} = \sqrt{\dfrac{(x-\bar{x})^2}{n-1}}$

$=\sqrt{\dfrac{(2532-939.5)^2+(3664-939.5)^2+(740-939.5)^2 ...+(285-939.5)^2}{8-1}}$

=1441.21

b)SD= 1441.21

c)Calculate a 99% two-sided confidence interval on the difference in mean life.

confidence level =99%

significance level =α= 0.01

Degree of freedom = n-1 = 8-1 =7

So, $t_{\frac{\alpha}{2}}=3.499$

Formula for confidence interval $= \left( \bar{X} \pm t_{\frac{\alpha}{2}} \times \frac{s}{\sqrt{n}} \right)$

Substitute the values

confidence interval $= 939.5 \pm 3.499 \times \frac{1441.21}{\sqrt{8}} \right)$

confidence interval $= 939.5 - 3.499 \times \frac{1441.21}{\sqrt{8}} \right)$ to $= 939.5 + 3.499 \times \frac{1441.21}{\sqrt{8}} \right)$

Confidence interval $−843.396\$ to $2722.396$

8 0

3 years ago

What is the value of c?<br><br><br> _____ units

Mashutka [201]

4^2+3^2=25
sqrt 25= 5
Answer is 5

8 0

3 years ago

Read 2 more answers

Need helpppppppppp please

aleksley [76]

Adding the two equations
3x + 6y + 3x - 6y = 36+0
6x = 36
x = 6
.
subtracting second equation from first
(3x + 6y ) - (3x-6y) =36 -0
12y = 36
y = 3
.
therefore
x = 6 and y = 3
(6,3)

8 0

3 years ago

Read 2 more answers

The slope of a line passing through the points (-2, 3) and (2, 7) is 1. a)True b) False

Paraphin [41]

<h3>Answer: True</h3>

Slope formula

m = (y2 - y1)/(x2 - x1)

m = (7 - 3)/(2 - (-2))

m = (7 - 3)/(2 + 2)

m = 4/4

m = 1