. A soccer ball manufacturer claims the diameters of their ball have a standard deviation of 2 mm when properly inflated. Based on a random sample of 10 balls you find a standard deviation of 3.2 mm. Does the sample suggest the standard deviation is higher than that claimed by the manufacturer?

Answer:

X = -4

Step-by-step explanation:

91x + 637 =273

First subtract 637 from both sides: 91x = -364

Then, divide both sides by 91 to get X by itself: X = -4

Answer:

It is 264 inches^3

Step-by-step explanation:

The volume of the top prism = 5 x 2 x 3 = 30

The volume of the bottom prism = 2 x 13 x 9 = 234

The total of these is 264 inches^3

Answer:

x = 2

y = 4

Step-by-step explanation:

y = 2x

x = -y + 6,   y = 6 - x

substitute for y:

2x = 6 - x

3x = 6

x = 2

y = 4

Answer:

f(2) = 22

Step-by-step explanation:

To find f(#), plug the number into each x of the equation.

f(x) = 10x + 2

f(2) = 10(2) + 2

Simplify the parentheses by multiplying.

f(2) = 20 + 2

Add.

f(2) = 22

Hope this helps!

Answer:

$62.10 off and the total price would be $75.90

Step-by-step explanation:

138*0.55=75.9

It is $62.10 off the original price

Answer:

3^-5

Step-by-step explanation:

x^-3=1/x^3

this rule applies to all negative exponents lol

Answer:

z = 9

Step-by-step explanation:

JH is a perpendicular bisector of Δ IJK.

Thus the triangle is isosceles with

JK = JI , that is

7z = z + 54 ( subtract z from both sides )

6z = 54 ( divide both sides by 6 )

z = 9

x = cos (47) = Pi/3, cos 47 = X/3

Step-by-step explanation:

x = 2.05, 2.05 (2.05)²

Answer:

T stands for time

Step-by-step explanation:

Answer:

[tex]t = \frac{d}{r}[/tex]

Step-by-step explanation:

[tex]d = rt\\\frac{d}{r} = \frac{rt}{r} \\\frac{d}{r} = t\\[/tex]

Answer:

RO = 39.5

Step-by-step explanation:

RO/9 = 57/13

13RO = 513

RO = 513/13

RO = 39.46

Answer:

39.5

Step-by-step explanation:

[tex]\frac{KN}{NM} =\frac{RO}{RQ} \\\\\frac{9}{13} =\frac{x}{57} \\\\13x=513\\x=39.5[/tex]

Answer:

88

Step-by-step explanation:

Use the following formula

Average=Sum/Count

89+91+84=264

264/3

88

Answer:

x = - 7

Step-by-step explanation:

Step 1:

2x + 3 = x - 4          Equation

Step 2:

x + 3 = - 4       Subtract x on both sides

Answer:

x = - 7        Subtract 3 on both sides

Hope This Helps :)

Answer:

x = -7

Step-by-step explanation:

Given Equation :-

Solution :-

Step 1 :- Subtract x from both sides

Step 2 :- Move constant to the right hand side and change their sign.

Step 3 :- Combine like terms

Answer:

I gotchu, it's A. x > -2

Step-by-step explanation:

The circle on the line is open so it means less than or greater than. If it was a close circle, it would be less than or equal to and vice versa. And the number is -2. The line excludes -2 but includes all numbers greater than that. So the answer would be A. x > -2

Answer:

a

Step-by-step explanation:

when the circle is open and not filled in means its not equal to and since -2 less than x, x=-3 or more

Sorry if im wrong

Answer:

I can't see it

Step-by-step explanation:

Answer:C

Step-by-step explanation: it’s 3/15, meaning, for example, taking 3 chocolate bars from a bunch of 15

Answer:

The answer is 56.57.

Step-by-step explanation:

Step by step explanation but hope this helps!

Answer:

if 18.5 is the diameter, then 58.12 feet

if 18.5 is the radius, then 116.24 feet

Step-by-step explanation:

18.5 x 3.14 = 58.12 feet

58.12 x 2 = 116.24 feet

Answer:

100 degrees

Step-by-step explanation:

all angles in a triangle add up to 180 degrees, so,

45+35=80

180-80=100

hope this helps!!!

Answer:

thanks for freepoints

have q nice dayyyyy

hope all your dreams come true

hahahahahahahahahah

Answer:

y = x + 6

Step-by-step explanation:

Line is passing through the points (0, 6) & (1, 7)

So, y-intercept (b) = 6

Slope (m) [tex] =\frac{(7 - 6)}{(1 - 0)} = \frac {1}{1} = 1[/tex]

Equation of line in slope-intercept form is given as:

y = mx + b

Plugging the values of m and b in the above equation, we find:

y = 1*x + 6

y = x + 6

Answer:6 members swam 10.11Km  during the season

Step-by-step explanation:

Number of members = 6

meters swam by each of the  6 members = 1,685 meters

Total meters swam by  the 6 members  during the season

= 1,685 meters X 6

=10,110 meters

But 1000m  =1km

10,110 m =10.11Km

Answer:

What state? There is no state there

Answer:d

Step-by-step explanation: I got it right

Answer:

D

Step-by-step explanation:

Answer:

the fist one is A and the second one is D

Step-by-step explanation:

The volume = LBH = x²y

.°. If a pyramid and a prism have the same base and height, their volumes are always in the ratio of 1/3xVolume of prism.

The volume of Pyramid = 1/3*x²y

h = 3 *1/3x²y/x²

h = 3*1/3x²y*1/x²

h = 3*1/3y

Answer:

volume = wide x length x deep

            = 3{1/3} ft x 2{1/2} ft x 3{3/4}ft

             = 10/3ft  x 5/2ft    x 15/4ft

             = (10 x 5 x 15)/(3 x 2 x 4) ft^3

              = 125/4 ft^3

               = 31{1/4} ft^3

Step-by-step explanation:

Answer:

1. 45

2. 33

Explanation:

1. 4x² + 6x - 9

= 4(9) + 18 - 9

= 36 + 18 - 9

= 45

2. 3y + 7(2y - 5)

= 12 + 7(8 - 5)

= 12 + 56 - 35

= 33

i hope this helps! :D

Answer:

45

33

Step-by-step explanation:

4(3)^2+6(3)-9= 36+18-9= 45

3(4)+7(2*4-5)= 12+7(8-5)= 12+7(3)= 33