# A group of campers hiked for 5 3/4 hours today and 6 3/4 hours yesterday. How many hours did they hike in all?

QUESTION POSTED AT 06/12/2019 - 03:36 PM

QUESTION POSTED AT 06/12/2019 - 03:36 PM

First you can turn the fractions into improper fractions.

5 3/4 = 23/4 6 3/4= 27/4

Add numerators, denominators stay the same.

23 + 27= 50

50/4

You can either leave it or simplify

Simplified:

50/4 = 12 1/2

:)

5 3/4 = 23/4 6 3/4= 27/4

Add numerators, denominators stay the same.

23 + 27= 50

50/4

You can either leave it or simplify

Simplified:

50/4 = 12 1/2

:)

**Answer: Ronald spent ** **hours on his homework.**

**Step-by-step explanation: **Given that Candice spent hours doing her homework. Her brother, Ronald, spent half of that number of hours doing his homework.

We are to find the **number of hours that Ronald spent on his homework.**

Since Ronald spent half of the time as his brother Candice, so** the number of hours that Ronald spent on his homework is given by**

**Thus, Ronald spent ** **hours on his homework.**

ANSWERED AT 28/01/2020 - 01:07 AM

QUESTION POSTED AT 28/01/2020 - 01:07 AM

**Answer:**

hours.

**Step-by-step explanation:**

We have been given that a painter takes 2 3/5 hours to paint a wall. We are asked to find the time taken by painter to paint 8 walls.

To find time taken by painter to paint 8 walls, we will multiply time taken to paint one wall by 8 as:

First of all, we will convert our given mixed fraction into improper fraction as shown below:

**Therefore, the painter will take hours to paint 8 walls.**

ANSWERED AT 28/01/2020 - 01:06 AM

QUESTION POSTED AT 28/01/2020 - 01:06 AM

The correct answer here is **2/3**

That is because 7 doubled is 14 and 7 multiplied by 3 is 21.

That is because 7 doubled is 14 and 7 multiplied by 3 is 21.

ANSWERED AT 28/01/2020 - 12:46 AM

QUESTION POSTED AT 28/01/2020 - 12:46 AM

Yes It is 69.36. Just multiply the 2 numbers.

ANSWERED AT 28/01/2020 - 12:37 AM

QUESTION POSTED AT 28/01/2020 - 12:37 AM

How much extra hours did he spent doing his homework between last week and this week:

11-10= 1 hour

Extra hour over original hour x 100% will be the percentage of extra time he did his homework:

1/10 x 100% = 10%

Therefore, he is not correct.

11-10= 1 hour

Extra hour over original hour x 100% will be the percentage of extra time he did his homework:

1/10 x 100% = 10%

Therefore, he is not correct.

ANSWERED AT 28/01/2020 - 12:35 AM

QUESTION POSTED AT 28/01/2020 - 12:35 AM

As the time and the speed are inversely proportional:

1.75 : t = 70 : 55

70 t = 1.75 · 55

70 t = 96.25

t = 96.25 : 70 = 1.375 ≈ 1.38 ( rounded to 2 decimal places )

It would take**1.38 hours** to travel from Macon to Atlanta.

1.75 : t = 70 : 55

70 t = 1.75 · 55

70 t = 96.25

t = 96.25 : 70 = 1.375 ≈ 1.38 ( rounded to 2 decimal places )

It would take

ANSWERED AT 28/01/2020 - 12:34 AM

QUESTION POSTED AT 28/01/2020 - 12:34 AM

If the number of hrs they play games online increases, that just means they are leaving less time to study for tests...so their test scores will decrease.

ANSWERED AT 28/01/2020 - 12:33 AM

QUESTION POSTED AT 28/01/2020 - 12:33 AM

The total number of bacteria present in the sample after 2 hours is 12.

ANSWERED AT 28/01/2020 - 12:02 AM

QUESTION POSTED AT 28/01/2020 - 12:02 AM

1.

B becacause is the only with logic

2.

A because it is imposible to r = s

B becacause is the only with logic

2.

A because it is imposible to r = s

ANSWERED AT 27/01/2020 - 11:59 PM

QUESTION POSTED AT 27/01/2020 - 11:59 PM

**Answer:**

**Option C is correct that is The total number of bacteria present in the sample after 2 hours is 12.**

**Step-by-step explanation:**

Given: f(x) is a function which gives total no of bacteria present in sample after x hours.

So, f(c) = 12 means 12 bacteria present in a sample after 2 hours.

Therefore, **Option C is correct that is The total number of bacteria present in the sample after 2 hours is 12.**

ANSWERED AT 27/01/2020 - 11:54 PM

QUESTION POSTED AT 27/01/2020 - 11:54 PM

Depreciation is the process of a business body to allocate an assets cost over its duration of services or useful time in use. You can use the formula of Straight line method which the quotient of the difference of original cost of assets and the scrap value and the estimated life of assets. So in calculating the engraving machines has a 1.5k of yearly depreciation so 3K and more is the 2 year depreciation of its use.

ANSWERED AT 27/01/2020 - 01:44 AM

QUESTION POSTED AT 27/01/2020 - 01:44 AM

I believe it's B.
If I'm wrong tell me so I can see what I did wrong.

ANSWERED AT 27/01/2020 - 01:39 AM

QUESTION POSTED AT 27/01/2020 - 01:39 AM

Number of hours on video games and test scores? Negative correlation (more hours playing less hours studying)

speed of a car and minimum stopping distance? Positive correlation (the higher the speed the bigger the stopping distance)

average running speed and total race time? Negative correlation (higher speed less time)

adult’s head circumference and age? Not correlation

outside temperature and amount of a heating bill? Negative correlation (higher temperature less heating used)

speed of a car and minimum stopping distance? Positive correlation (the higher the speed the bigger the stopping distance)

average running speed and total race time? Negative correlation (higher speed less time)

adult’s head circumference and age? Not correlation

outside temperature and amount of a heating bill? Negative correlation (higher temperature less heating used)

ANSWERED AT 27/01/2020 - 01:33 AM

QUESTION POSTED AT 27/01/2020 - 01:33 AM

|x-55| = 4.2

x -55 = +/ - 4.2

x = 55 +/- 4.2

Maximum is, x - 55 = 4.2

x -55 = +/ - 4.2

x = 55 +/- 4.2

Maximum is, x - 55 = 4.2

ANSWERED AT 27/01/2020 - 12:45 AM

QUESTION POSTED AT 27/01/2020 - 12:45 AM

Let b equal the speed of the boat in still water.

Let c equal the speed of the current.

Going downstream, we can write the equation:

which can be rearranged to:

3b + 3c = 120 ............(1)

Going upstream, we can write the equation:

which can be rearranged to:

4b - 4c = 120 .............(2)

Multiplying equation (1) by 4, and multiplying equation (2) by 3 we get:

12b + 12c = 480 ........(3)

12b - 12c = 360 .........(4)

Adding equations (3) and (4) results in the following equation:

24b = 840

Let c equal the speed of the current.

Going downstream, we can write the equation:

which can be rearranged to:

3b + 3c = 120 ............(1)

Going upstream, we can write the equation:

which can be rearranged to:

4b - 4c = 120 .............(2)

Multiplying equation (1) by 4, and multiplying equation (2) by 3 we get:

12b + 12c = 480 ........(3)

12b - 12c = 360 .........(4)

Adding equations (3) and (4) results in the following equation:

24b = 840

ANSWERED AT 27/01/2020 - 12:33 AM

QUESTION POSTED AT 27/01/2020 - 12:33 AM

Group A:

1 dot at 9: 1 x 9 = 9

7 dots at 10: 7 x 10 = 70

8 dots at 15: 8 x 15 = 120

8 dots at 17: 8 x 17 = 136

6 dots at 19: 6 x 19 = 114

Mean: (9+70+120+136+114) / (1+7+8+8+6) = 449/30 = 14.97

Group B:

6 dots at 10: 6 x 10 = 60

5 dots at 14: 5 x 14 = 70

6 dots at 18: 6 x 18 = 108

5 dots at 25: 5 x 25 = 125

4 dots at 28: 4 x 28 = 112

4 dots at 29: 4 x 29 = 116

mean: (60+70+108+125+112+116) / (6+5+6+5+4+4) = 591 / 30 = 19.70

The group that has a lower mean age of painting students is Group A. Its mean is 14.97 or 15 years of age.

1 dot at 9: 1 x 9 = 9

7 dots at 10: 7 x 10 = 70

8 dots at 15: 8 x 15 = 120

8 dots at 17: 8 x 17 = 136

6 dots at 19: 6 x 19 = 114

Mean: (9+70+120+136+114) / (1+7+8+8+6) = 449/30 = 14.97

Group B:

6 dots at 10: 6 x 10 = 60

5 dots at 14: 5 x 14 = 70

6 dots at 18: 6 x 18 = 108

5 dots at 25: 5 x 25 = 125

4 dots at 28: 4 x 28 = 112

4 dots at 29: 4 x 29 = 116

mean: (60+70+108+125+112+116) / (6+5+6+5+4+4) = 591 / 30 = 19.70

The group that has a lower mean age of painting students is Group A. Its mean is 14.97 or 15 years of age.

ANSWERED AT 26/01/2020 - 11:48 PM

QUESTION POSTED AT 26/01/2020 - 11:48 PM

C = hours Carlos drove, M = hours Maria drove.

52*C+54*M = 217

C = 4,1-M

52*(4,1-M)+54M = 217

213,2-52M+54M = 217

217-213,2 = 54M-52M

3,8 = 2M

M = 1,9

Maria drove 1,9h.

52*C+54*M = 217

C = 4,1-M

52*(4,1-M)+54M = 217

213,2-52M+54M = 217

217-213,2 = 54M-52M

3,8 = 2M

M = 1,9

Maria drove 1,9h.

ANSWERED AT 26/01/2020 - 11:46 PM

QUESTION POSTED AT 26/01/2020 - 11:46 PM

|x – 55| = 4.2

where x is the speed.

-4.2 < x - 55 < 4.2

-4.5 + 55 < x < 55 -4.2

50.8 < x < 59.2

The upper boundary for x is 59.2

The speed must be in the range 55 - 4.2 to 55 + 4.2.

where x is the speed.

-4.2 < x - 55 < 4.2

-4.5 + 55 < x < 55 -4.2

50.8 < x < 59.2

The upper boundary for x is 59.2

The speed must be in the range 55 - 4.2 to 55 + 4.2.

ANSWERED AT 26/01/2020 - 11:12 PM

QUESTION POSTED AT 26/01/2020 - 11:12 PM

17.9ppm after 3 hours

ANSWERED AT 26/01/2020 - 11:12 PM

QUESTION POSTED AT 26/01/2020 - 11:12 PM

55 MPH.

Here's my thinking.

I started with the premise that an average speed is about 60 MPH. Well, that means in one hour, you would have driven 60 miles. In another hour, that's 120 miles. So, I added 120 to 15,851.

15, 951

+ 120

-------------

16, 071

But, I'm looking for a palindromic number that's close to that. And, sure enough, there IS such a number: 16, 061.

That would mean that you traveled 110 miles: (16,061 - 15,951)

Plug this data into the formula: S = D/T (Speed = distance divided by time)

S = 110/2

S = 55 (MPH)

-------------------------

Pretty cool, huh?

ANSWERED AT 26/01/2020 - 11:04 PM

QUESTION POSTED AT 26/01/2020 - 11:04 PM

44 hours because...

Part A: W=8x where x equals amount of hours, and W equals wages.

Part B: S=8x+12(y) where y equals overtime hours and S equals wages

Part C: 368=8(40)+12(y)

-320=12(y)

48=12y

48/12=y

4=y

x=40, y=4.

X+Y=44 hours

Part A: W=8x where x equals amount of hours, and W equals wages.

Part B: S=8x+12(y) where y equals overtime hours and S equals wages

Part C: 368=8(40)+12(y)

-320=12(y)

48=12y

48/12=y

4=y

x=40, y=4.

X+Y=44 hours

ANSWERED AT 26/01/2020 - 10:49 PM

QUESTION POSTED AT 26/01/2020 - 10:49 PM

A) 8x = W

B) 320 + 12y = S

C) 320 + 12y = 368

12y = 48

y = 4

44 hours in total

B) 320 + 12y = S

C) 320 + 12y = 368

12y = 48

y = 4

44 hours in total

ANSWERED AT 26/01/2020 - 10:48 PM

QUESTION POSTED AT 26/01/2020 - 10:48 PM

150 minutes : 3 1/2 hours

3 1/2 hours = 3.5 hours = 3.5 * 60 = 210 minutes

150 minutes : 3 1/2 hours = 150 minutes : 210 minutes

= 150:210

= 15 : 21

= 5 : 7

3 1/2 hours = 3.5 hours = 3.5 * 60 = 210 minutes

150 minutes : 3 1/2 hours = 150 minutes : 210 minutes

= 150:210

= 15 : 21

= 5 : 7

ANSWERED AT 26/01/2020 - 10:43 PM

QUESTION POSTED AT 26/01/2020 - 10:43 PM

1.5 inches. just do 9 divided by 6

ANSWERED AT 26/01/2020 - 10:33 PM

QUESTION POSTED AT 26/01/2020 - 10:33 PM

Multiply the numerators and the denominators

1 x 3 = 3

3 x 4 = 12

3/12

Both can be divided by 3

3/3 = 1

12/3 = 4

1/4

1 x 3 = 3

3 x 4 = 12

3/12

Both can be divided by 3

3/3 = 1

12/3 = 4

1/4

ANSWERED AT 26/01/2020 - 10:27 PM

QUESTION POSTED AT 26/01/2020 - 10:27 PM

The premium is the overtime.

Total time = 45 hours.

40 hours of regular time at $5, and 5 hours of overtime.

Total = 40*5 + 5 * 6 = 200 + 30 = $230

Total time = 45 hours.

40 hours of regular time at $5, and 5 hours of overtime.

Total = 40*5 + 5 * 6 = 200 + 30 = $230

ANSWERED AT 26/01/2020 - 10:18 PM

QUESTION POSTED AT 26/01/2020 - 10:18 PM

N = number of hours.

$5 per hour, total = 5*n = $5n

Since $35 has been saved.

The amount saved plus the amount got from baby sitting should be greater or equal to the $90 cost.

5n + 35 ≥ 90

5n ≥ 90 -35

5n ≥ 55

n ≥ 55/5

n ≥ 11

So Rodney should baby sit for at least 11 hours, that is 11 and above.

$5 per hour, total = 5*n = $5n

Since $35 has been saved.

The amount saved plus the amount got from baby sitting should be greater or equal to the $90 cost.

5n + 35 ≥ 90

5n ≥ 90 -35

5n ≥ 55

n ≥ 55/5

n ≥ 11

So Rodney should baby sit for at least 11 hours, that is 11 and above.

ANSWERED AT 26/01/2020 - 09:33 PM

QUESTION POSTED AT 26/01/2020 - 09:33 PM

The answer is 2300 because the climbing rate is 100 bacteria per hour. so times 100 and 13 and u get 1300 and u have to add that to the a 1000

ANSWERED AT 26/01/2020 - 08:51 PM

QUESTION POSTED AT 26/01/2020 - 08:51 PM

If he earn half of $10.50 an hour after his assigned 40 hours. Then it will be (40x10.5)+5(10.5x1.5)= $498.75

ANSWERED AT 26/01/2020 - 12:22 AM

QUESTION POSTED AT 26/01/2020 - 12:22 AM

**Answer:**

B. It is true if I go to the mall and I get paid. It is true if I don’t go to the mall and I don’t get paid.

**Step-by-step explanation:**

"If and only if" in mathematics, logic, and philosophy is a form of expression for a theorem: If A then B, and if B then A; or A if and only if B. That is, when these words are used they present a biconditional situation, where one thing happens only as a result of something else.

Based on this, we can say that in the phrase "Iwill go to the mall if and only if i get paid today" means "It's true if I go to the mall and get paid. It's true if I don't go to the mall and I'm not paid out."

ANSWERED AT 26/01/2020 - 12:20 AM

QUESTION POSTED AT 26/01/2020 - 12:20 AM