The maximum winds reached by a hurricane were 230 kilometers per hour. a. What is this wind speed in meters per hour? 1 km= 1,000 meters b. What is this wind speed in kilometers per minute? 1 hour = 60 minutes

Answer:

False

Step-by-step explanation:

a+(-a)=a-a = 0 which means irrational numbers are not closed under addition or subtraction.

False. Irrational numbers are not closed under subtraction.

Given data:

Closure under subtraction means that if you subtract two irrational numbers, the result will always be another irrational number.

However, this is not true for irrational numbers.

For example, consider the irrational numbers √2 and √2 + √2. Both of these numbers are irrational. However, when we subtract √2 from √2 + √2, we get:

(√2 + √2) - √2 = √2

The result, √2, is still an irrational number. But if we subtract two irrational numbers like √2 from √2, we get:

√2 - √2 = 0

The result, 0, is a rational number, not an irrational number.

To learn more about irrational numbers, refer:

https://brainly.com/question/4031928

#SPJ6

Answer:

Add

11 over 2

11  2  + 11 over 4   11  4 = 33 over 4  33  4

Step 1 of 2: Add. Show the work

Step 2 of 2: Simplify.

Simplify

33 over 4  33  4   = 8 and 1 over 48

1

4

Step-by-step explanation:

Answer:

Plot A has a greater median than Plot B, but Plot B has a greater mean.

Step-by-step explanation:

hope this helps

Answer:

I dont really know

Step-by-step explanation:

Answer:

8,2

Step-by-step explanation:

Answer:

D.

Step-by-step explanation:

Answer:

The probability that the pizza delivery takes more than 30 minutes is 61.53%.

Step-by-step explanation:

To determine the percentage of probability that the pizza will take more than 30 minutes to be delivered, knowing that the delivery delay time is evenly distributed between 10 and 75 minutes, the following calculation must be performed:

75 - 10 = 65

100/65 = 1.53

30 - 10 = 20

65 - 20 = 40

40 x 1.53 = 61.53

Therefore, the probability that the pizza delivery takes more than 30 minutes is 61.53%.

Answer:

0.6923

Step-by-step explanation:

we have to find P(X>45)

uniform distribution formula is P(X>A) = (b-A)/(b-a)

we have A = 30, a = 10 and b =75

P(X>45) = (75-30)/(75-10) = 45/65

P(X>45) =  0.6923

$40.50¢

I used a website...

Answer:

I suggest looking at my attachment. This will help with your question and answers to future assignments in your class.

Step-by-step explanation:

Hope this helps! Please vote me as Brainliest. Let me know if you need more of an explanation. Remember, cheating is never the answer. Try your best before you seek answers. Hope it's not too late. Good luck with whatever you are doing! Have an amazing day!

Read this article:

The graph that would most likely be associated with the model is graph (a)

From the question, we have the following highlights:

A quadratic function follows a curved or parabolic path.

This means that it increases, then rests at a maximum and then decreases.

Graph (c) and (d) do not show the above highlight.

The graph (b) has 2 maximum points;

This means that the graph of Mr. Waller's company is graph (a)

Read more about quadratic function at:

https://brainly.com/question/18797214

#SPJ1

Answer:

It is A for edmentum

Step-by-step explanation:

Answer:

9

Step-by-step explanation:

A composite number is a positive integer that can be formed by multiplying two smaller positive integers.

Answer:

(23.97, 24.03)

Step-by-step explanation:

Given the data:

224.120 224.001 224.017 223.982 223.989 223.961 223.960 224.089 223.987 223.976 223.902 223.980 224.098 224.057 223.913 223.999

Confidence interval = m ± Zcritical(s/√n)

n = sample size = 16

Zcritical at 95% = 1.96

Using calculator :

Sample mean, m = 224.0019

Standard deviation, s = 0.0618

Lower bound : 24.0019 - 1.96(0.0618/√16) = 23.971618

Upper bound : 24.0019 + 1.96(0.0618/√16) = 24.032182

(23.97, 24.03)

AnswerNot A. Or B.

Step-by-step explanation:

A-Half of the students watched fewer than two TV shows.

A- is wrong

B-More than half of the students watched three or more TV shows.

B- is wrong

It is either C. Or D.

Answer:

its D on the Edge Test

Step-by-step explanation:

Have an amazing day :)

angles in a triangle add up to 180

so x = 180 - ( 70 + 90 ) = 20

this is because the two other angles in the both of the identical triangles are 70 and 90

Answer:

Option (3)

Step-by-step explanation:

[tex]\text{tan}(\frac{\theta}{2})=\text{sin}\theta[/tex]

[tex]\text{tan}(\frac{\theta}{2})=2\text{sin}{\frac{\theta}{2}} \text{cos}(\frac{\theta}{2})[/tex]

[tex]\frac{\text{sin}\frac{\theta}{2}}{\text{cos}\frac{\theta}{2}} =2\text{sin}{\frac{\theta}{2}}\text{cos}(\frac{\theta}{2})[/tex]

[tex]\text{sin\frac{\theta}{2}}=2\text{sin}{\frac{\theta}{2}}\text{cos}^2(\frac{\theta}{2})[/tex][tex]\text{sin\frac{\theta}{2}}=2\text{sin}{\frac{\theta}{2}}\text{cos}^2(\frac{\theta}{2})[/tex][tex]\text{sin}\frac{\theta}{2}=2\text{sin}{(\frac{\theta}{2})}\text{cos}^2(\frac{\theta}{2})[/tex]

[tex]\text{sin}\frac{\theta}{2}-2\text{sin}{(\frac{\theta}{2})}\text{cos}^2(\frac{\theta}{2})=0[/tex]

[tex]\text{sin}\frac{\theta}{2}[1-2\text{cos}^2(\frac{\theta}{2})]=0[/tex]

[tex]\text{sin}\frac{\theta}{2}=0[/tex] ⇒ [tex]\theta=0[/tex]

[tex]1-2\text{cos}^2(\frac{\theta}{2})=0[/tex]

[tex]\text{cos}(\frac{\theta}{2})=\frac{1}{\sqrt{2}}[/tex]

[tex]\frac{\theta}{2}=\frac{\pi}{4}[/tex]

[tex]\theta=\frac{\pi}{2}[/tex]

Therefore, θ = 0 and [tex]\frac{\pi}{2}[/tex] are the solutions.

Option (3) will be the answer.

Answer:

6 1/3

Step-by-step explanation:

Add numbers 2 +3 then 2 + 2 then then both

Denominators are the same so it stay 3 next you have 5 + 4/3 Convert the improper fraction into a mixed number 5 + 1 1/3 Write the mixed number as a sum of the whole number and the fractional part 5 + 1 + 1/3 Add the numbers 6 1/3

Answer:

11-9=2

2*3=6

6+9= 15

so 15? Is that right

Step-by-step explanation:

If y was directly proportional to x, the graph of y against x would pass through the origin (O).

Since the graph above does not show this, y is not directly proportional to x.

Answer:

So,green marbles are 9*4 = 36

And red marbles are 1*4 or 40-36

= 4

Step-by-step explanation:

how dis helps

The number of red marbles in the bag will be equal to 4. Hence, option A is correct.

The four basic operations of arithmetic can be used to add, subtract, multiply, or divide two or even more quantities.

They cover topics like the study of integers and the order of operations, which are relevant to all other areas of mathematics including algebra, data processing, and geometry.

As per the given information in the question,

Total number of red and green marbles in the bag = 40

The number of green marbles, g, is 9 times the number of red marbles,

So, the equation as per the statement will be,

g = 9r

Let's assume that the number of red marbles is 4.

So,

g = 9(4)

g = 36 marbles.

r = 40 - 36 = 4

Then, it means that the red marble's quantity is 4.

To know more about arithmetic operations:

https://brainly.com/question/13585407

#SPJ6

Answer:

Test statistic (t) = 0.625

Step-by-step explanation:

Step(i):-

mean of the Population(μ) = 10.4 hours

Sample mean (x⁻) = 10.7 hours

Standard deviation of the sample( S)  = 1.44

The level of significance (α= 0.1

Sample size 'n' = 9

Degrees of freedom = n-1 = 9-1 =8

Step(ii):-

Test statistic

                     [tex]t = \frac{x^{-} -mean}{\frac{S}{\sqrt{n} } }[/tex]

                   [tex]t = \frac{10.7 -10.4}{\frac{1.44}{\sqrt{9} } } =0.625[/tex]

Answer:

X>10

Step-by-step explanation:

Answer:

Step-by-step explanation:

we have a 51 in sandwich

let a piece be x

we have x= shorter piece

another piece is x+6

another piece (x+6)-9=x-3

x+x+6+x-3=51

3x=51-3

3x=48

x=48/3=16

x=16, longer piece is 16+6=22, shorter piece =10

Answer:

See the proof below

Step-by-step explanation:

Given the following coordinates

P(2, −1)

Midpoint of PQ M(3, 0)

We can get the coordinate point Q using the midpoint formula;

M(X,Y) = (x1+x2/2, y1+y2/2)

X = x1+x2/2

3 = 2+x2/2

6 = 2+x2

x2 = 6-2

x2 = 4

Y = y1+y2/2

0 = -1+y2/2

0 = -1 + y2

y2 = 0+1

y2 = 1

Hence the coordinate of Q is (4, 1)

Next is to get the coordinate of R

Given the midpoint of QR to be N(5, 3)

(5,3) = (4+x2/2, 1+y2/2)

5 = 4+x2/2

10 = 4+x2

x2 = 10-4

x2 = 6

1+y2/2 = 3

1+y2 = 6

y2 = 6-1

y2 = 5

Hence the coordinate of R is (6,5)

Given the coordinates M(3, 0) and N(5, 3)

Slope is expressed as:

m = y2-y1/x2-x1

m = 3-0/5-3

m = 3/2

Slope of MN = 3/2

Get the slope of PR

Given the coordinates P(2, −1) and R (6,5)

Slope of PR = 5-(-1)/6-2

Slope of PR = 5+1/4

Slope of PR = 6/4 = 3/2

Since the slope of MN is equal to that of PR, hence MN is parallel to PR i.e MN || PR

To show that MN = 1/2PR, we will have to take the distance between M and N and also P and R first as shown:

For MN with coordinates  M(3, 0) and N(5, 3)

MN = √(x2-x1)²+(y2-y1)²

MN = √(5-3)²+(3-0)²

MN = √2²+3²

MN = √13

Get the length of PR where P(2, −1) and R (6,5)

PR = √(6-2)²+(5+1)²

PR = √4²+6²

PR = √16+36

PR = √52

PR = √4*13

PR = √4*√13

PR = 2√13

Since MN = √13

PR = 2MN

Divide both sides by 2

PR/2 = 2MN/2

PR/2 = MN

Hence MN = 1/2 PR (Proved!)

Answer:

aₙ = a₁ - 8 x (n-1)

Step-by-step explanation:

a₁ = 15

a₂ = 7 = a₁ - 8 x 1

a₃ = -1 = a₁ - 8 x 2

........

aₙ = a₁ - 8 x (n-1)