Mathematics College

## Answers

**Answer 1**

**Answer:**

Uhm so anywayss lol 50 whole hours sis.

**Step-by-step explanation:**

since 1km x 50 is 50km you would do 1 hour x 50 and you get 50 hours of your life wasted running:))

**Answer 2**

50 hours.

We can use **dimensional analysis**!

[tex]\displaystyle{50km\over{1km\over hr}} = 50hr[/tex]

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## Related Questions

Which function is graphed?

y=3 cot(x) + 2

y = 3 cot(x+3)

y = 3 tan(x)+2

y = 3 tan(x+2)

### Answers

**Answer:**

y = 3 tan(x)+2

**Step-by-step explanation:**

The **function **y = 3 tan(x)+2 is shown in the provided graph option 3th is **correct**.

What is trigonometry?

**Trigonometry **is a branch of mathematics that deals with the relationship between sides and angles of a right-angle **triangle**.

The missing figure is in the picture refer to the picture.

As we have a trigonometric function.

In the picture, the **graph **of a tanx is shown but 2 units up.

Thus, the function y = tan(x) + 2 is shown in the provided graph option 3rd is correct.

Learn more about **trigonometry **here:

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-4x+7=2y-3 ordered pair

### Answers

**Answer:**

its 2112121211111111111111111111111111111111111111

**Step-by-step explanation:**

1r

In physics, the Ideal Gas Law describes the relationship among the pressure, volume, and temperature of a gas sample. The law is represented with the formula PV = nRT, where P is the pressure, V is the volume, T is the temperature, n is the amount of gas, and R is a physical constant. Select all the equations that are equivalent to the formula PV = nRT. Group of answer choices

A. P = VnRT

B. R = PVnT

C. V = nRT / P

D. n = PV / RT

E. T = nR / PV

Also Theres Another Question

The temperature in degrees Kelvin is 273 degrees less than the temperature in degrees Celsius. Use the formula C = 5/9(F - 32) to write a formula for the temperature in degrees Fahrenheit F in terms of the temperature in degrees Kelvin K. A. F = 9/5(K - 273) - 32

B. F = 5/9(K + 273) + 32

C. F = 9/5C + 32

D. F = 9/5(K + 273) + 32

Also Please Answer My other Question I posted

### Answers

Answer:

1. D and C

2. F = 9/5(k-273) + 32

Step-by-step explanation:

1. We simply want to write the given equation in different forms;

PV = nRT

So P = nRT/V

R = PV/nT

V = nRT/P

n = PV/RT

T = PV/nR

So the correct expressions are;

D, C,

2. we want to make F the subject of the formula, that would be;

C = 5/9(F - 32)

9C = 5(F - 32)

divide both sides by 5

9C/5 = F - 32

F = 9C/5 + 32

But K = C + 273

So C = K - 273

Insert this into the equation, we have

F = 9(K-273)/5 + 32

Which number line represents all of the values of x for the equation x^2 = 64? (5 points)

### Answers

**Answer:**

8

**Step-by-step explanation:**

x=8 because if you take the square root of 64 you get 8 so that means 8^2= 64

Answer:

C) I got it right

Step-by-step explanation:

pls say if it is, i need to know fast

### Answers

need to know what ? ma

The mean cost to repair the smoke and fire damage that results from home fires of all causes is $11,389 (HomeAdvisor website, December 2014). How does the damage that results from home fires caused by careless use of tobacco compare? The DATAfile named TobaccoFires provides the cost to repair smoke and fire damage associated with a sample of 55 fires caused by careless use of tobacco products. Using past years' data, the population standard deviation can be assumed known with σ = $3,027.

### Answers

**Answer:**

The alternative is characterized in the interpretation section following the table, as per the case mentioned.

**Step-by-step explanation:**

According to the question:

**The sample mean will be:**

⇒ [tex]\bar{x}=\frac{\Sigma x}{n}[/tex]

[tex]=\frac{1050500}{55}[/tex]

[tex]=19100[/tex]

The critical value of z ([tex]z_e=1.96[/tex]) seems to be the 95 % confidence interval. **So the required confidence interval will be:**

= [tex]\bar{x} \ \pm \ x_{critical}\frac{\sigma}{\sqrt{n} }[/tex]

= [tex]19100 \ \pm \ 1.96.\frac{3027}{\sqrt{25} }[/tex]

= [tex]19100 \ \pm \ 800[/tex]

Consequently, the average cost of repairing flames and smoke injury can outcomes from household fires started by careless tobacco is therefore estimated at quite a 95 percent confidence interval ($18300, $19900). The 95 percent confidence interval indicates that the average estimated price of fires results through the use of tobacco is somewhat more costly than that of the average cost of flames results from across all factors that cause.

The 95% **confidence interval **is ($18300 , $19900) and according to the **confidence interval**, the average estimated **price **of **fires **results through the **use **of **tobacco **is somewhat **more costly **than that of the average **cost **of **flames **results from across all factors that cause.

Given :

The mean cost to repair the smoke and fire damage that results from home fires of all causes is $11,389.Sample size, n = 55.The population standard deviation can be assumed known with σ = $3,027.

First, find the **sample mean **by using the following formula:

[tex]\rm \bar{x}=\dfrac{\sum x}{n}[/tex]

[tex]\rm \bar{x}=\dfrac{1050500}{55}[/tex]

[tex]\rm \bar {x} = 19100[/tex]

Now, for **95% confidence **level, the confidence **interval **will be:

[tex]= \rm \bar{x} \pm x_{critical} \dfrac{\sigma}{\sqrt{n} }[/tex]

[tex]\rm = 19100\pm 1.96\times \dfrac{3027}{\sqrt{55} }[/tex]

[tex]=19100\pm 800[/tex]

The 95% **confidence interval **is ($18300 , $19900).

According to the **confidence interval**, the average estimated **price **of **fires **results through the **use **of **tobacco **is somewhat **more costly **than that of the average **cost **of **flames **results from across all factors that cause.

For more information, refer to the link given below:

https://brainly.com/question/20747890

A train goes at a constant speed. If it covers 150 miles in 2 1/2 hours. What distance will he cover in 3 hours?

### Answers

**Answer:**

180 Miles?

**Step-by-step explanation:**

First divide 150 by 2 1/2 (or 2.5)

You'll end up with 60

Then times it by the amount of hours (3)

60 x 3 = 180

I believe this is the answer; if I am wrong, deepest apologies.

What is the area of a triangle with vertices at (-3,3), (2, 3), and (4,7)?

5 square units

10 square units

20 square units

40 square units

### Answers

**Answer:**

Choice B

**Step-by-step explanation:**

The **area **of the **triangle **is 10 square units, the correct **option **is B.

What is a Triangle?

A **triangle **is a polygon with three sides, angles, and vertices.

The **triangle **is classified into various types on the basis of the angle and on the basis of equality of the length of the sides.

The **vertices **of the **triangle **are at:

(-3,3), (2, 3), and (4,7).

The **area **of the **triangle **has to be determined.

The **length **of the **sides **will be calculated using the **distance formula**.

**side **1 = [tex]\rm \sqrt { (3-3)^2 + ( 2 +3)^2}[/tex] = 5 units

**side **2 = 2√5 units

**side **3 = √65 units

The **height **of the **triangle **is determined by calculating the distance from (4, 7) to (4, 3).

The **height **of the **triangle **= 4 units

The **area **of a **triangle **is given by,

A = (1/2) * **base *** **height**

A = (1/2) * 5 * 4

A = 10 **square units**

To know more about **Triangle**

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Philip is allowed to watch 2 hours of television each day Monday through Thursday and 4 hours of television each day Friday through Sunday. Which of the following equations can be used to calculate the number of hours of television Philip is allowed to watch in x weeks?

### Answers

**Answer:**

x(4 × 2) + x(3 × 4)

**Step-by-step explanation:**

The question says "which of the following equations" which infers you have already been given options. However, none were provided in the question so my answer may be slightly different than the given options as there's several ways to solve this problem.

Monday through Thursday = 4 days × 2 hours per day

Friday through Sunday = 3 days × 4 hours per day

To find the total for *one* week, add the two expressions together:

(4 × 2) + (3 × 4)

The question states for "x weeks" so:

x(4 × 2) + x(3 × 4)

This is one way the equation can be written

Another way is:

x[(4 × 2) + (3 × 4)]

If neither of these are answers for your mutliple choice question, then please provide the options and I will let you know which is correct

2/3 of a pizza was left over. A group of friends divided

the leftover pizza into pieces each equal to of the

original pizza. After each friend took one piece, of

the original pizza remained. How many friends were

in the group?

### Answers

**Answer:**

4 friends were I'm the

**Step-by-step explanation:**

i think

Ken builds a porch in the shape of an isosceles trapezoid.

What is the area, in square feet, of Ken’s porch?

### Answers

**Answer:**

In square feet, Ken's porch is 180² ft.

Answer: 120

Step-by-step explanation:

Base x height / 2 (I think)

The right triangle on the right is a scaled copy of the right triangle on the left. Identify the scale factor. Express your answer as a whole number or fraction in simplest form.

Please help me 22 points and a THANK YOU WITH 5 STAR RATING:))))

### Answers

Answer:

Scale factor = [tex] \frac{5}{4} = 1\frac{1}{4} [/tex]

Step-by-step explanation:

The scale factor is how much the right triangle on the right was increased in size or enlarged, since the right triangle is a scaled copy of the one on the left.

The scale factor used = the ratio of any of their corresponding sides

Scale factor = side length of the ∆ on the right ÷ corresponding side length of the ∆ on the left

Scale factor = [tex] \frac{15}{12} [/tex]

Scale factor = [tex] \frac{5}{4} = 1\frac{1}{4} [/tex]

The **scale factor** expressed as a** fraction** is** 4/5**

Since the** right triangle **on the right is a** scaled copy **of the right triangle on the left, then the** ratio** of their similar sides is equal to the **scale factor.**

This is** expresse**d as:

Taking the ratio of the** fractions**

[tex]\frac{20}{25} = \frac{4}{5}[/tex]

**Similarly **for [tex]\frac{12}{15}[/tex]

[tex]\frac{12}{15} =\frac{4}{5}[/tex]

This shows that [tex]\frac{20}{25} = \frac{12}{15} = \frac{4}{5}[/tex]

Hence the **scale factor** expressed as a** fraction** is** 4/5**

Learn more here: https://brainly.com/question/9386516

What is the largest three-digit number divisible by 5, 6, and 21?

### Answers

**Answer:**

840

**Step-by-step explanation:**

You can divide by 5 and get 168

840/6 = 140

840/21 = 40

Answer:

The largest 3 digit number divisible by 5, 6, & 21 is 840.

Write the equation of the line:

(-5,-3); slope = -3/5

### Answers

**Answer:**

that is correct

**Step-by-step explanation:**

your welcome

**Answer:**

-3/5x+6

**Step-by-step explanation:**

I'm assuming they want it in slope-intercept form, because that's more common. If it's not then I will be wrong. See screenshot for proof.

I’ll mark you as brainliest if correct!

### Answers

**Answer:**

1.

**Step-by-step explanation:**

Plug -2 in for x for both functions.

[tex]2(-2)^{2} + 4 = 12\\-4(-2) + 3 = 11\\[/tex]

Now, subtract the two functions (f-g) (aka (f(x) - g(x))

12 - 11 = 1

The answer is 1.

What is 127x 958/ 3 x 35+67-9+12/2 (-25)=

### Answers

**Answer:**

The answer to that is 1419344.66667

**Step-by-step explanation:**

What is the opposite of the reciprocal of –2.4?

### Answers

2.4 = 24/10 = 12/5

, 2.4 = 12/5 =5/12

Answer:

2.4

Step-by-step explanation:

And if your trying to find the hundredth it would be 0 and 0 is less than 4 so it goes down

0.01 is 1/10 of what?

### Answers

**Answer:**

0.1

**Step-by-step explanation:**

multiply 0.01 by 10 and then you get the answer

The **number **is 0.1.

what is fraction?

A **fraction **is a **part** of a **whole**. In arithmetic, the **number** is expressed as a quotient, in which the **numerator **is divided by the **denominator**.

**given**:

0.01 is 1/10

let the **number **be x

x of 1/10 = 0.01

x* 1/10= 0.01

x= 0.01*10

x=0.1

Hence, the **number **is 0.1

Learn more about **fraction **here:

https://brainly.com/question/11947917

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If (3x2 – 5x + 5y - 2) is subtracted from (2x” + x - 1), what is the coefficient of x in the result?

O A. 2

OB. 6

OC. 4

OD. -1

### Answers

Answer: 4

Explanation: -5x + x = -4x

Solve

9x2-5x = 94x-8

### Answers

**Answer:**

x=26262626262626...

**Step-by-step explanation:**

Solve ab - c= d for a

### Answers

**Answer:**

a=(d+c)/b

**Step-by-step explanation:**

a*b-c=d

a*b=d+c

a=(d+c)/b

**Answer:**

c+d/b

**Step-by-step explanation:**

Solve for x.

2x-1+12=6x+3

### Answers

**Answer:**

es pepo cumbia

o PVP TU PON LA SALA Y YO LA HUMILLACIÓN

Answer:

2x-1+12=6x+3

X = 2

Explain:

2x-1+12=6x+3

2x+11+6x+3

( 2x+11 )+(-11-6x)=(6x + 3) + (-11 - 6x)

so that means

X=2

A math professor wears for each class a combination of : one of their three hats (red, blue,green); one of their pants (black, blue, white, green); one of their shirts (white, red, black);and one of their pair of shoes (black, red, blue, white). They never wear combinations withthree items of the same color. How many different combinations are wearable?

### Answers

**Answer:**

There are 36 ways in which he can wear combinations with three items of the different color.

**Step-by-step explanation:**

Hat Pants Shirts Shoes

red black red black

blue blue black red

green green white blue

white white

If we look carefully we see that he can choose any hat, any pant and any shirt but he can choose only one pair of shoes that does not match with any of the three.

3C1*4C1*3C1*4C4= 3*4*3* 1= 36

There are 36 ways in which he can wear combinations with three items of the different color.

Find the value of x that makes lines u and v parallel.

Please help!

### Answers

-1 + 9x = 8x + 9

1x = 10

x = 10

The value of x is 10.

HELP!!! GIVING BRAINLEST

### Answers

**Answer:**

It’s to blurry for me ☹️

**Step-by-step explanation:**

I need my glasses

What is Five less than twice a number

2w - 5

or 5 - 2w

### Answers

2w - 5

This is the right expression

Given m||n, find the value of x.

1580

70

### Answers

**Answer:**

x=22

**Step-by-step explanation:**

180-158=22

22 good luckkkk!!!!

Find the perimeter of the image below

### Answers

Answer:

There isn't an image...

Step-by-step explanation:

There’s no image tho

the residents of a city voted on whether to raise property taxes. the ratio of yes votes to no votes was 3 to 5 . if there were 1992 yes votes what wss the total

### Answers

747 votes for yes

1245 votes for no

Select the equation for the line parallel to y = -4x + 10 that

contains P(4,1).

### Answers

**Answer:**

the third answer

**Step-by-step explanation:**

parallel lines will have the same slope (in this case -4) and you plug in the points