Keith is riding his bicycle. He rides at a speed of 13 kilometers per hour for 32.5 kilometers. For how many hours does he ride?​

Answers

Answer 1

Answer:

422.50

Step-by-step explanation:

just multiply 13 × 32.5=422.50


Related Questions

Want to choose 2 letters ,without replacement, from 5 letters

Answers

what do u mean??????

A machine is used to fill plastic bottles with bleach. A sample of 18 bottles had a mean fill volume of 2.007 L and a standard deviation of 0.010 L. The machine is then moved to another location. A sample of 10 bottles filled at the new location had a mean fill volume of 2.001 L and a standard deviation of 0.012 L. It is believed that moving the machine may have changed the mean fill volume, but it is unlikely to have changed the standard deviation. Assume that both samples come from approximately normal populations and have equal variance. The 99% confidence interval for the difference between the mean fill volumes at the two locations is approximately

Required:
Find a 99% confidence interval for the difference between the mean fill volumes at the two locations.

Answers

Answer:

The 99% confidence interval for the difference between the mean fill volumes at the two locations is;

-0.1175665 L < μ₁ - μ₂ < 0.1295665 L

Step-by-step explanation:

The number of bottles in the sample at the first location, n₁ = 18 bottles

The mean fill volume, [tex]\bar{x}_{1}[/tex] = 2.007 L

The standard deviation, σ₁ = 0.010 L

The number of bottles in the sample at the second location, n₂ = 10 bottles

The mean fill volume, [tex]\bar{x}_{2}[/tex] = 2.001 L

The standard deviation, σ₂ = 0.012 L

The nature of the variance of the two samples = Equal variance

The confidence interval of the statistics, C = 99%

The difference between the mean

[tex]\mu_1 - \mu_2 = \left (\bar{x}_{1}- \bar{x}_{2} \right )\pm t_{\alpha /2} \times \sqrt{\dfrac{\sigma _{1}^{2}}{n_{1}}+\dfrac{\sigma _{2}^{2}}{n_{2}}}[/tex]

(1 - C)/2 = (1 - 0.99)/2 = 0.005, the degrees of freedom, f = n₁ - 1 = 10 - 1 = 9

∴ [tex]t_{\alpha /2}[/tex] = 3.25

Therefore, we have;

[tex]\mu_1 - \mu_2 = \left (2.007- 2.001 \right )\pm 3.25 \times \sqrt{\dfrac{0.01^{2}}{18}+\dfrac{0.12^{2}}{10}}[/tex]

Therefore, we have the difference of the two means given as follows;

-0.1175665 L < μ₁ - μ₂ < 0.1295665 L

The type of speech used to encourage the audience to take action is
O Entertaining
O Informative
O Motivational
O Persuasive

Answers

the answer is Motivational

Answer:

Motivational

Step-by-step explanation:

Can you solve it please and explain step by step how u got it ?????Please​

Answers

Answer:

m<7 = 61

Step-by-step explanation:

These angles (<7, and <8) are adjacent to each other (they are next to each other), therefore they are supplementary (add up to 180).

180 - 119 = m<7

6, 2, 7, 8, 8, 8, 5, 10, 10

What is the standard deviation of the data?

2.38 first cousins
2.52 first cousins
5.65 first cousins
6.36 first cousins

Answers

Answer:

2.52

Step-by-step explanation:

On edg

Solve for a.
−10 = 1/5 a
PLZ HELP I NEED ANSWER ASAP

Answers

Answer:

-50

Step-by-step explanation:

Answer:

a = -50

Step-by-step explanation:

-10 = 1/5a

multiply both sides of the equation by 5:

a = -50

Write the decimal -0.43 as a fraction in simplest form.
Written as a fraction, the decimal -0.43 is

Answers

-0.43= -43/100 I think this is correct I don’t know if it can be simplified

Consider the expression 16a + 4c.
Part B
What is the value of the expression
when a = -2 and c = -1?

Answers

the answer would -38

I think its perpendicular but I want to be sure. Will mark brainliest!

Answers

Answer:

Its perpendicular

Step-by-step explanation:

Because the slopes are recipricles of eachother

Homework (5)
18. GEOGRAPHY In the continental United States,
the ratio of states that border an ocean to states
that do not border an ocean is 7:9. How many
of the states border an ocean?

Answers

Answer:

28

Step-by-step explanation:

Let's set the ratio as

7x : 9x

If you add all the states that border an ocean and do not, you will get 48 states (because Alaska and Hawaii are not part of the continental US, as they do not touch the "main" part of the country)

So, we can write this equation.

7x + 9x = 48

Simplify.

16x = 48

Divide both sides by 16.

x = 4

Now, find how many states border an ocean. In our ratio, the number of states that border an ocean was 7x. Substitute x = 4 into 7x

7 * x = 7 * 4 = 28

The number of states that border an ocean is 28.

I hope this helps! Feel free to ask any questions!

Who know this answer

Answers

Answer: BASE 10

Step-by-step explanation:

It’s Base 10 my guy. Pretty certain

Round to the nearest ten- thousands place
438,105

Answers

Answer:

about 440,000

Step-by-step explanation:

Here 438,105 you can round of the 38,000as 40,000 so will get 440,000.

The length of a cut board in a sawmill should be within 2% of the board’s length. Write an absolute value inequality that describes the length L of an acceptable board with an official length of 12 feet. Solve the inequality and summarize the answer using a complete sentence.

Answers

Answer:

d

Step-by-step explanation:

Max wants to cover this rectangle with blue tiles I estimate that there would be

Answers

I have no idea. Where is the diagram.

Find the area of each. Use pi = 3.14

Answers

Answer:

452.16 inches

Step-by-step explanation:

A = pi r^2

A = 3.14 * (12)^2

A = 3.14 * 144

A = 452.16 inches

Which expression is equivalent to x2-16 ?

Answers

Answer:

Step-by-step explanation:

You should indicate which type of expression are you expecting.

But intuitively, x^2 + 16 = x^4 + 4^2 = (x+4)^2 - 8x

How to do 264 in Expanded form

Answers

Answer:

200+60+4

Step-by-step explanation:

200+60+4=264

How many 1/2 cup servings are in 2 3/4 cups of ice cream?​

Answers

Answer:

1 1/2 Servings

Step-by-step explanation:

common sense

Answer:5.5

Step-by-step explanation:

1/2*5=2 and 1/2 and 1/2 divided by 2 is 1/4 and 5 1/2+1/4=5 3/4

HELP! please explain how to solve the point of maximum growth rate for the logistic function?!?? I'm really confused!

Answers

Answer:

18 units over 210 units of time

Step-by-step explanation:

the function reaches its limit at 116 and starts at 0 at -94

|-94|+|116|=210

2) The difference of two numbers is 13. Their sum is 85. Find the numbers.
What’s the answer

Answers

Answer:

49 and 36

Step-by-step explanation:

49 - 36 = 13

49 + 36 = 85

Answer:solving we get y=6  x+y=85

x-y=13

add the equations

2x=98

x=98/2

x=49

85-49=36

the numbers are 49 and 36

Hope this helps have a awesome night/day❤️✨

Step-by-step explanation:

Write the decimal 2.06 as a mixed number.
Written as a mixed number, the decimal 2.06 is

Answers

Answer:

[tex]2\frac{3}{50}[/tex]

Step-by-step explanation:

So 2 would be your whole number

and since 6 is in the hundredths place the fraction would be 6/100 which is reduced to 3/50

In the diagram shown , CD =7,DB=8, AE=5,m

Answers

Answer:

.

Step-by-step explanation:

Answer:

I don't understand the question

Step-by-step explanation:

can you help me with my question The strange occurrences reported by the chambermaid who cleaned Dr. Heidegger's den (In Paragraph 3 of "Dr. Heidegger's Experiment") are examples of A. personification. B. symbolism C. elements of gothic literature, b or c

Type your answer in the box.

r = 3 d = 5

Answers

Answer:  8.5

Step-by-step explanation:

I just took the quiz last week.

Tell whether the angles are adjacent or vertical. Then find the value of x

Answers

Answer:

this is the answer

Step-by-step explanation:

hope this will help you

The angles are adjacent and complementary.

Complementary means they add up to 90 degrees.

3x + 45 = 90

3x = 90 - 55

3x = 45

x = 45/3

x = 15

The value of x is 15 degrees.

help me please I've been stuck all day​

Answers

It’s September
Cuz the difference between august and September is most

The following radical equation has a solution set {x = ?} and an extraneous root x = ?.

Answers

Answer:

x=2; the extraneous root x=42.

All the details are in the attached picture, the answer is marked with red colour.

The solution set is {2, 42} & the extraneous root is 42

What is extraneous root ?

If there are two roots in an equation, and one of them does not properly satisfy the equation, then the root is called extraneous root of that equation.

What are the roots ?

Given equation is,

[tex]2+\sqrt{2x-3}=\sqrt{x+7}[/tex]

Squaring both sides we get,

[tex]2^{2} +2(2)(\sqrt{2x-3} )+(\sqrt{2x-3}) ^{2} = (\sqrt{x+7}) ^{2}[/tex]

⇒ [tex]4+4\sqrt{2x-3} +2x-3=x+7\\[/tex]

⇒ [tex]4\sqrt{2x-3} =6-x[/tex]

Again, squaring both sides we get,

⇒ [tex](4\sqrt{2x-3}) ^{2} =(6-x)^{2}[/tex]

⇒ [tex]16(2x-3)=6^{2} -12x+x^{2}[/tex]

⇒ [tex]32x-48=36-12x+x^{2}[/tex]

⇒ [tex]x^{2} -44x+84=0[/tex]

⇒ [tex]x^{2} -42x-2x+84=0[/tex]

⇒ [tex](x-42)(x-2)=0[/tex]

So, x = 2 & 42

Here extraneous root is 42.

Learn more about extraneous root here :

https://brainly.com/question/658096

#SPJ2

‼️PLEASE HELP‼️
A
B
C
D

Answers

The answer is A, because you have to use different measures to figure the answer out. Youre welcome!! <3

Given the two triangles shown, find the value of x

Answers

Answer: x = 150/6 = 25

Step-by-step explanation:

Here is the information shown in the diagram: in triangle ABC, Angle A = 68, Angle C = 38, AB = 6, and BC = 10. In triangle DEF, Angle D = 38, Angle E = 74, EF = 15, and DE = x.)

The value of x is (Choose...4, 11, 12, 19, 20, 25).

To solve this, we notice that the sum of the angle measures mentioned is 68 + 38 + 74 = 180. Thus Triangles ABC and FED are similar by AA Similarity. It remains only to set up the proportion:

DE/CB = EF/BA

x/10 = 15/6

x = 150/6 = 25

The value of x in the triangle is 25

The triangle are similar.

What are similar triangles:

Similar triangles are only different in sizes. There corresponding angles are equal and all corresponding side have the same ratios.

Therefore, let's find the value x by establishing the proportion below:

ΔABC ≅ ΔFED

AB / FE = BC / ED = AC / FD

6 / 15 = 10 / x

cross multiply

6x = 150

x = 150 / 6

x = 25

learn more on similar triangles: https://brainly.com/question/25882965?referrer=searchResults

Can someone please help I really need this to be correct.

Answers

I think it’s 22 or 23...I’m so sorry if it’s wrong :/

Find the value of x. Pythagorean theorem and its converse

Answers

There’s information missing. Was there supposed to be a picture attached?
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