Mathematics Middle School

Mayumi hikes 3 miles in 2 hours. Edwin hikes 4 miles in 3 hours. Who takes more time to complete a 12 mile hiking trail? How much more time

Answers

Answer 1
Mayumi takes 8 hours. Edwin takes 9 hours. Edwin takes more time by an hour.
Answer 2

Edwin will take more time to complete a 12-mile hiking trail. By 1 hour.

Related Questions

If a litre of water is provided for 20 people, how much for 50 people?

Answers

the answer is two an a half litres

2 1/2 litre is givin to 50 people...

Write two expressions that represent 3/12

Answers

1/4 or 25% hope this helps

(5 x 8) x (5 x 8) = ___ squared

Answers

........(5×8) × (5×8) =           40²
(5×8) × (5×8)
40×40
1,600

original price: $325.50; Markdown; 15%

Answers

325.5*.15 = 48.825

325.5 - 48.825 = 276.68 (rounded)
So you take $325.50 and multiply it by 15%. $325.50(0.15) = $48.825. You round $48.825 to $48.83. The you subtract $48.83 from $325.50 to get $276.67.

The Markdown price is $276.67

Hope this helps!

if fifty cents is divided equally among three friends there will be some cents left how many cents will be left

Answers

Greetings!

This can be solved by dividing 50 by 3 (the amount of friends, you're spiting the money with.)

50/3=16.6667

We have to round down in order to get a whole number: 16

16*3=48
50-48=2

If 50 cents is divided equally among three friends, each would get 16 cents and there would be 2 cents left over.

Hope this helps.
-Benjamin

An office supply store sells 128 pens in each bag. A business bought 9 bags of pens one month and 7 bags of pens the next month. How many pens total did the business buy?

A. 2,304 pens
B. 2,048 pens
C. 6,712 pens
D. 7,764 pens

Answers

The Business bought a total of 2048 pens.

Easiest way to solve this is to add the amount of bags the business bought.

7 + 9 = 16

After you find to total amount of bags bought you multiply the amount of pens in each bag by the total amount of bags the business bought.

16 * 128 = 2048


Final answer:

The business bought a total of 2,048 pens over two months. In the first month, they purchased 1,152 pens, and in the second month, they purchased 896 pens.

Explanation:

The problem involves simple multiplication and addition operations. First, we need to find out how many pens the business bought in total for each month. In the first month, the business bought 9 bags of pens, and each bag contains 128 pens. So, we multiply 9 (number of bags) by 128 (number of pens per bag) to get 1,152 pens for the first month.

For the second month, the business bought 7 bags of pens. Again, we multiply 7 (number of bags) by 128 (number of pens per bag) to get 896 pens.

Finally, we add together the totals for the two months: 1,152 pens (for the first month) plus 896 pens (for the second month) gives us a total of 2,048 pens bought by the business over the two months. So, the correct answer is B. 2,048 pens.

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Estimated tax on tires that cost $498 with a 6.25% sales tax

Answers

Just multiply the cost by the tax rate (use the decimal fraction 0.0625 for this):

0.0625($498) = answer

NEED HELP ASAP THANKS



Evan is making a table that will be created in the shape of the figure below. The table top is a triangle attached to a rectangle. To purchase the right amount of paint, he needs to know the area of the table top. He can only spend $10 on paint, which is enough to cover 150 ft2 of surface area. What is the maximum length of the base of the rectangle he can build? An image of a compound shape made up of a rectangle and a triangle is shown. The length of the rectangle is labeled x and the width is labeled 6 feet. The base of the triangle is labeled 4 feet and the height is labeled 6 feet.
x = __________________ ft
Numerical Answers Expected! Answer for Blank 1:

Answers

If we're looking for the area of the compound shape then,

Area of rectangle is : length × width
Area of triangle : 1/2 × base × height

So...

6x + (1/2 × 4 × 6) = 150
6x + 12 = 150
6x = 138
x = 23

The maximum length of the base of the rectangle he can build is 23 feet.

the absolute value of a negative number is 2.78 what is the distance on the number line between the number and it's absolute value

Answers

The distance from -2.78 to 2.78 on a number line would equal 5.56!

Which number is not in scientific notation? 1.10 ⋅ 103 4.0 ⋅ 1016 7.03 ⋅ 10−2 350 ⋅ 102

Answers

All of them except 10^2. This because scientific notation are number written to the power of ten. e.g Instead of writing 1000 you can write 10^3.

Pre-Cal Help!! (Image Attached)

Answers

To solve this type of questions, a practical way is to think of the 1.quadrant situation, that is, model the situation in right triangle trigonometry.

Check the picture.

For the moment let [tex]\displaystyle{ \cos\theta= \frac{8}{17} [/tex] (we make it positive since we are modeling using a triangle.)

Using the Pythagorean theorem, the length of the side opposite to angle [tex]\theta[/tex] is found to be 15 units.

We can see that the sine of theta is [tex]\displaystyle{ \sin\theta= \frac{opposite \ side}{hypotenuse}= \frac{15}{17} [/tex].

In the third quadrant, both sine and cosine of an angle are negative, so the actual values of the sine and cosine of theta are, eventually:

[tex]\displaystyle{ \sin\theta=- \frac{15}{17} [/tex], [tex]\displaystyle{ \cos\theta=- \frac{8}{17} [/tex].

Recall the double-angle identities (formulas):

[tex]\sin 2\theta=2\sin\theta\cos\theta[/tex], [tex]\cos2\theta=cos^2(\theta)-sin^2(\theta)[/tex].

Using these identities and the ratios found above, we have:

[tex]\displaystyle{ \cos2\theta=cos^2(\theta)-sin^2(\theta)=(- \frac{8}{17})^2-(- \frac{15}{17})^2=\frac{64}{289}-\frac{225}{289}=\frac{-161}{289}[/tex]

Similarly, applying the double angle formula for the sine we have:

[tex]\displaystyle{ \sin 2\theta=2\sin\theta\cos\theta=2\cdot(- \frac{8}{17})(- \frac{15}{17})=\frac{240}{289}[/tex]

[tex]\displaystyle{ \tan2\theta= \frac{\sin 2\theta}{\cos 2\theta}= \frac{\frac{240}{289}}{\frac{-161}{289}}= -\frac{240}{161} [/tex]


Answer:

[tex]\displaystyle{\cos2\theta=\frac{-161}{289}[/tex]


[tex]\displaystyle{ \tan2\theta= -\frac{240}{161}[/tex]

math help Brainliest will be given I solved RS wrong how do I do it I got 112

Answers

R is between S and T, so this implies that R is on line ST and we can say

SR+RT = ST

plug in the given expressions to get

(-2x+24)+(4x+10) = 4x+12

Now solve for x

(-2x+24)+(4x+10) = 4x+12
-2x+24+4x+10 = 4x+12
2x+34 = 4x+12
2x+34-2x = 4x+12-2x
34 = 2x+12
34-12 = 2x+12-12
22 = 2x
2x = 22
2x/2 = 22/2
x = 11

If x = 11, then RS is,
RS = -2*x+24
RS = -2*11+24
RS = -22+24
RS = 2

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

Answers:
x = 11 and RS = 2

RS and RT are both segments on the same line. Therefore their equation can be added together and set equal to the equation that is given representing the entire length of segment ST.:


4x+10+ -2x+24=4x+12


Now that you have created one larger equation to solve for x you can now go ahead and combine like terms, (all the x's with the x's and the regular numbers with the regular numbers)


2x+34=4x+12


Now you must move the variables and constants to the opposite sides of the equation. This is called isolating the variable:


2x= 22

Now you can solve for x by dividing by 2 and your answer is x = 11


Now that you have solved for the value of x you can take that value and plug it into the equation that is given for the length of segment RS.


-2X+24 NOW BECOMESSS......

-2(11)+24= -22+24= 2


The length of segment RS is 2

The length of segment RT is 54

The total length of segment ST is 56 
 



Write each number in standard form

9.03 x 10²

7.89 x 10³

4.115 x 10⁵

Answers

9.03 x 100
7.89x1000
4.115x100000

Rachel types 162 words in 3 minutes Rachel types at a constant rate how many words does Rachel type per minute

Answers

Answer:

54 words  does Rachel type per minute

Step-by-step explanation:

Unit rate defined as the rates are expressed as a quantity as 1 such as 4 meter per seconds or 5 km per hour

As per the statement:

Rachel types 162 words in 3 minutes Rachel types at a constant rate.

We have to find  how many words does Rachel type per minute.

By definition of unit rate:

[tex]\text{Unit rate per minute} = \frac{162}{3}[/tex]

Simplify:

[tex]\text{Unit rate per minute} =54[/tex] words

Therefore, 54 words  does Rachel type per minute

The number of words typed by Rachael in one minute at a constant rate is 54 words

The parameters given :

Step-by-step explanation:

Number of words typed = 162 words Time taken = 3 minutes

Since, the typing rate is constant ; the typing rate per minute can be calculated thus :

(Number of words typed ÷ number of minutes) (162 / 3) = 54 words per minute.

Therefore, Rachael types at a constant rate of 54 words per minute.

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Translate the expression into a word phrase. k + 12 A. a number less than 12 B. 12 more than a number C. the product of a number and 12 D. the quotient of a number and 12 im sucky ;-;

Answers

the answer is b) 12 more than a number

when you use the word "more than" it means addition. when you use the word "less than" it means subtraction. when you use the word "product of" it means multiplication. when you use "quotient of" it mean division.

hope that helps, God bless! 

The amount or money you earn at your job varies directly with the number of hours you work. How many hours will you need to work to earn $145 if you earn $21.75 for 3 hours?

Answers

Well what you have to do is find out how much money u get per hour which would be 21.75/3 which would give u 7.25 so then you need to do 145/7.25 your answer is 20

If money you earn at your job varies directly with the number of hours you work. Then 20 hours will you need to work to earn $145 if you earn $21.75 for 3 hours

What is Ratio?

A ratio is an ordered pair of numbers a and b, written a / b where b does not equal 0.

Given,

Amount or money you earn at your job varies directly with the number of hours you work

One can earn  $21.75 for 3 hours

We need to find how many hours taken to earn $145.

To find this we form an equation.

Let x be the number of hours to earn 145

21.75/3=145/x

Apply cross multiplication

21.75x=3×145

21.75x=435

Divide both sides by 21.75

x=20

Hence, it took 20 hours to earn $145.

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42 students and 6 faculty members at Byrd Middle school chose to retake their school pics .these #'s represent 1/12 of the students and 1/6 of the fuculty .what is the combined # of students and faculty members

Answers

faculty (not fuculty)    ;)

Let s = # of students and f = # of faculty.  We want to find s + f.

(1/12)s = 42.  Mult. both sides by 12, we get s = 504.

(1/6)f = 6.  Mult. both sides by 6, we get f = 36.

Then the total # of faculty and students combined is 504+36 = 540 (ans.)

what is the absolute value of -5

Answers

The absolute value of 2 + 7 is 5.

Answer: +5

Explanation: When a problem is asking us to find the absolute value of a number, it's really asking us how far is that number from zero.

So the absolute value of -5 is really asking us

how far is -5 away from zero on a number line.

I have drawn a number line below and you can see that -5

is 5 units to the left of zero which means its 5 units from zero.

So the absolute value of -5 is +5.

what property allows you to conclude that 5x+7x=12x

Answers

Since both of the numbers have a variable which is x ready to be multiplied, there is no expression leading to the variable therefore you will add normally but you will need to put the missing variable which needs to be multiplied. So overall you can just add and once you get your variable you can be abe to multiply and get your final answer.

Hope this helps

the value of 9 in 901,532 is how many times the value of the 9 in 157,900?

Answers

the value of 9 in 901,532 = 900,000
the value of 9 in 157,900 = 900

to find out how many times greater, we must divide
900,000 / 900 = 1000

so it is 1000 times greater <==

A number is42,300 when you multiplied by 10. Find the product of this number and 500

Answers

your number is 4240 and the product of this and 500 is 4740

Using the distributive property, an expression equivalent to 48 + 30 is

Answers

Find the common factor for 48 and 30 which is 6 . Then factor it out
Answer: 6(8+5)

By using a distributive property the expression 48 + 30 will be written as 6(8+5).

What is distributive property?

The distributive property of binary operations in mathematics generalizes the distributive law, which states that in elementary algebra, equality is always true.

Given expression of addition is 48 + 30. The expression by using distributive property will be written as:-

E = 48 + 30

Take 6 commons from the above equation.

E = 48 + 30 = 6 ( 8 + 5 )

48 + 30 = 6( 8 + 5 ) ( Distributive property )

Therefore, by using a distributive property the expression 48 + 30 will be written as 6(8+5).

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I need to know how to write this as a decimal with all the steps and everything plzz

Answers

You divide the denominator into the numerator and that will get your answer which is 7.

Erica Sutherland earns a yearly salary go 45,650, how much would Erica earn in a monthly paycheck

Answers

so thats a year salary, so divide that by 12 and theres your answer

divide the yearly pay by 12 ( 12 months in a year)

45650 / 12 = 3804.17 per month

Ryan made 3/4 of a gallon of lemonade. Each glass holds 1/8 of a gallon of lemonade. How many glasses can Ryan fill?

Answers

The answer would be 6 glasses of lemonade. 
3/4=6/8
1/8= one glass
So since there is 6/8 of a gallon, there would be 6 glasses.

6 Glasses Ryan can made.

What is Unitary Method?

The unitary technique involves first determining the value of a single unit, followed by the value of the necessary number of units.

For Example, Let's say Ram spends 36 Rs. for a dozen (12) bananas.

12 bananas will set you back 36 Rs. 1 banana costs 36 x 12 = 3 Rupees.

As a result, one banana costs three rupees. Let's say we need to calculate the price of 15 bananas.

This may be done as follows: 15 bananas cost 3 rupees each; 15 units cost 45 rupees.

Given:

Ryan made 3/4 of a gallon of lemonade.

Each glass holds 1/8 of a gallon of lemonade.

so, the number of glasses of Ryan made

= (3/4)/ (1/8)

= 3/4 x 8

= 3 x 2

= 6

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Nina wants to download games for her video game console. Older games cost $500 points and new releases cost 2000 points. Nina has 20,000 points to use. The equation 500a+2000b=20,000, where a is the number of older games and b is the number of new releases, models the situation. How many older games can she download if she downloads one new game? Four games?

Answers

36 and 24
(20000-2000)/500=36
(20000-8000)/500=24

Which expression is a factor of 18x^2-15x+2 a) 3x-2 B) 9x-1 C) x-2 D)2x-1

Answers

= 18x^2 - 12x - 3x + 2

=  6x(3x - 2) - 1(3x - 2)

= (6x - 1)(3x - 2)

The answer is  a)  3x - 2

The expression (3x - 2) is a factor of the given expression 18x² - 12x - 3x + 2. The correct answer would be an option (A).

What is the expression?

Expressions are defined as mathematical statements that have a minimum of two terms containing variables or numbers.

The expression is given in the question, as follows:

18x² - 12x - 3x + 2

We have to determine the factor of the given expression.

As per the question, we have

18x² - 12x - 3x + 2

Factor out the above expression, and we get

6x(3x - 2) - 1(3x - 2)

(6x - 1)(3x - 2)

Thus, the expression (3x - 2) is a factor of the given expression.

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What is 69,000 rounded to the nearest hundred

Answers

The answer would still be 69,000 

Hope this Helps
Salutations!

What is 69,000 rounded to the nearest hundred?

To round to the nearest hundred, you need to know whether the number next to hundred's place is greater than 5 or lesser than 5. If its greater than 5, you need to round up. If its lesser than 5, you need to round down.

69,000 → The number 0 is in  the hundred's place. Zero has no value so thus you will be rounding down.

69,000 ≈ 69,000. 

Hope I helped (:
Have a great day!

A rectangular swimming pool has a volume of 2160 cubic feet. Water is being added to pool at a rate of about 20 cubic feet per minute. Use an equation in point-slope form to determine about how long it will take to fill the pool completely if there were already about 1200 gallons of water in the pool. Use the fact that 1 cubic foot of space holds about 7.5 gallons of water.

Answers

1200÷7.5= 160
-> there is already 160 cubic ft. of water
y=20x+160
-> this is the equation
2160=20x+160
2000=20x
100=x
you need 100 cubic ft. more to finish filling the pool

Evaluate (1/4)^—2-(5^0x 2)x1^-1

Answers

This expression is awkward.  Your (1/4)^--2 should be written (1/4)^(-2).
Also, your x 2 should be written x^2 (the square of x).

But maybe that's not what you meant!

Your apparent use of "x" to indicate "multiply" makes things harder and more confusing.  Please use " * " ONLY to denote multiplication.  

Let's try again.  Here's what I think I see:

(1/4)^(-2)    -    1*2*1^(-1)                  and here is the evaluation:

16               -      2              =    32

Practice typing in expressions like these and then try to get some critique from your teacher regarding where you are correct and where you are not.

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