2n+5-n evaluate the expression for n=3.

Answers

Answer 1
2n+5-n
=2(3) +5- 3
= 6 + 5 - 3
= 8

hope it helps

Related Questions

When you divide two fractions is the quotient always smaller than the dividend

Answers

sometimes but most of the time no

Simple math question!

Eliana's calculator displays a number as 5.378 E9.

What is this number in standard form?

Enter your answer in the box.

Answers

5,378,000,000  because 5.378 E9 = 5.378 x 10^9

Answer:

5,378,000,000

Step-by-step explanation:

A shelf support 3 3/4. If a book weighs 3/8 of a pound, how many books can I think hold? If can add more support so the shelf hold 5 1/4 pounds, how many books can the shelf hold now?

Answers

So, you want to get the mixed number, 3 3/4, as a fraction. Multiply 3 by 4 and add it to the top of the fraction, getting you the fraction 15/4. Multiply the top and bottom by 2, getting the denominator to 8 and the numerator to 30. Now, you have two fractions, 30/8 and 3/8, with common denominators. Divide 30 by 3, you get 10. 10 books for the first part. Using this explanation you'll find that the new shelf can hold 14 books. 


A store manager timed Janette to see how long it would take her to fold and put away a sweater, a shirt, a pair of pants, and a scarf. It took her 26.1 seconds for the shirt, 24.3 seconds for the sweater, 32.8 seconds for the pants, and 18.2 seconds for the scarf. What was the average time it took Janette to fold and put away all four items?

Answers

The Average, or the mean of the times, is the sum of the times divided by the number of times. 

26.1 + 24.3 + 32.8 + 18.2 = 101.4
101.4 / 4 = 25.35 seconds.

25.35 seconds is the average
25.35 seconds. 
26.1+24.3+32.8+18.2=101.4
101.4/4 (the number of items)=25.35 per each item

A group of students and teachers are going on a field trip? One ninth of the group will fit on 1/3 of a school bus. How many buses are needed to transport the entire group?

Answers

3/9 will fit on one bus so it will take 3 buses to fit 9/9 of the students, which 9/9 is the whole group.

The entire group will need 3 buses to transport them on the field trip.

How many buses will be needed?

Let total number of people in the group be represented by 'P'

We are told that 1/9 of the group can fit on 1/3 of a school bus.

So, this shows 1/9 of P = (1/3) of a bus; we will write an equation to find the total number of buses needed

==>

(1/9)P = (1/3) bus

P = (1/3) bus * 9

P = 9/3

P = 3 buses.

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the lowest temperature ever recorded in cloud city was 11 degrees farienheit the highest was 124 degrees Fahrenheit higher than the record low temperature could anyone help me solve this

Answers

It's simple, just add 124 to 11. 124 + 11 = 135 degrees.
If the highest was 124 degrees Fahrenheit from the lowest record temperature, then all you do is add 11 degrees Fahrenheit to 124 degrees Fahrenheit. It equals 135 degrees Fahrenheit.   

I'm a bit confused on how to get x, the example doesn't make sense either.

Answers

We know that A=l*w and we also know that these two rectangles have to have the same area. This means we set the two area formulas equal to each other:
[tex](x)(12)=(16)(x-2)[/tex]
[tex]12x=16x-32[/tex]
[tex]-4x=-32[/tex]
[tex]x=8[/tex]

What are the dimensions of his bedroom

Answers

There are several possibilities to this. Square feet it just area. Some dimensions are 2ft and 90ft, 4ft and 45ft, or possibly 9ft and 20ft.

At a bake sale, brownies were sold for .75 each, cookies were sold for .50 each. There were 10 more cookies sold than brownies. The total amount earned was 40. How many brownies and cookies were sold

Answers

 75b + .5c = 40 c = b + 10 .75b + .5(b + 10) = 40 .75b + .5b + 5 = 40 1.25b = 35 b = 28 c = 38.

James is reading the latest book by his favorite science fiction author. The table shows the number of pages James read over different periods of time. Calculate the proportionality constant from the table in terms of pages per minute.
A) 0
B)1/2
C)8
D)12
Time (minutes)8 16 24
Pages Read 4 8 12

Answers

The proportionality constant from the table in terms of pages per minute is 1/2.

option B.

What is the proportionality constant ?

The proportionality constant from the table in terms of pages per minute is calculated by applying the following formula.

The given time and pages read are;

Time (minutes)-------- 8    16     24

Pages Read   ----------4     8      12

Mathematically, the formula for the proportionality constant is given as;

proportionality constant = pages read / time taken

proportionality constant = 4 pg / 8 min = 8 pg / 16 min =  12pg / 24 min

proportionality constant = 1/2 pg/min = 1/2 pg/min = 1/2 pg/min

Thus, the proportionality constant from the table in terms of pages per minute is calculated by dividing the pages read by the time taken to read the pages.

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The cost to rent a car is $30 per day. Write an expression for the cost of renting a car d days. Make a table to find how much it will cost to rent a car for 3, 5, 7, and 10 days.

Answers

d = day
c = cost

c = 30d

Day(d)c = 30d        |  Cost(c)
3          90=30(3)      |  $90
5          |  150=30(5)    | $150
7          |  210=30(7)    |  $210
10        |  300=30(10)  | $300


Answer:The  expression for the cost of renting a car d days is:

                [tex]c=30d[/tex]

The table can be made as follows:

    Number of days     Cost

          3                         90

          5                         150

           7                         210

          10                        300    

Step-by-step explanation:

It is given that:

The cost to rent a car is $30 per day.

Now, the expression which is used to represent the cost for renting a car d days is:

  [tex]c=30d[/tex]

where c is the cost of renting a car.

when d=3 we have:

     c=90

( Since, 30×3=90 )

when d=5

      c=150

( Since, 30×5=150 )

when d=7

     c=210

( Since, 30×7=210 )

when d=10

     c=300  

( Since, 30×10=300 )          

Calculate 2,000-1,853

Answers

use a calculator or simple subtraction
2000-1853= 147
brainliest answer?
2000-1853= 147 <<<<<<<<

What is the relationship between 8.76×106 and 8.76×102 ? Select from the drop-down menus to correctly complete the statement. 8.76×106 is times than 8.76×102 .

Answers

8.76 x 10^6 is 10,000 times greater than 8.76 x 10^2.

Answer:

[tex]8.76\times 10^6[/tex] is 10,000 times [tex]8.76\times 10^2[/tex].

Step-by-step explanation:

Let [tex]8.76\times 10^6[/tex] be n times [tex]8.76\times 10^2[/tex].

We have been given two numbers [tex]8.76\times 10^6[/tex] and [tex]8.76\times 10^2[/tex].

We can represent this information in an equation as:

[tex]8.76\times 10^2\cdot n=8.76\times 10^6[/tex].

[tex]\frac{8.76\times 10^2\cdot n}{8.76\times 10^2}=\frac{8.76\times 10^6}{8.76\times 10^2}[/tex]

[tex]n=\frac{8.76\times 10^6}{8.76\times 10^2}[/tex]

Using exponent property of fractions [tex]\frac{a^m}{a^n}=a^{m-n}[/tex], we will get:

[tex]n=\frac{8.76\times 10^{6-2}}{8.76}[/tex]

[tex]n=1\times 10^{4}[/tex]

[tex]n=10,000[/tex]

Therefore, [tex]8.76\times 10^6[/tex] is 10,000 times [tex]8.76\times 10^2[/tex].

Jeffery read a book with one-fifth the pages of the book Toby read. Which variable expression represents the number of pages in the book Jeffery read?

Answers

t/5 since toby only read 1 fifth of it

Answer:

1/5

Step-by-step explanation:

i took the test its right

Please help iv added a pic of the work sheet. I have to get this done by tomorrow

Answers

You do this by moving all terms without y to the right hand side, and then divide the whole lot to keep a clean y= on the left hand side.

Moving to the other side is done by subtracting (or adding) a term from both sides. Effectively this looks like you're moving the term and flipping the sign.

So 2y + 18 = 4x changes into 2y +18 -18 = 4x -18 so 2y = 4x - 18. If you forget about the middle step, it looks like the +18 jumped to the other side and changed sign. That's all.

Second step is to change the 2y into y. You do that by dividing everything by 2. So 2y=4x-18 becomes y=2x-9

1. y=2x-9
2. y=3/2x - 6
3. y=4x+18
4. y=2x-12

5. y=-4x+18
6. y=2/3x+4
7. y=-1/4x-18/4
8. y=1/4x-18/4

9. y=1/4x+18/4
10. y=-1/4x+18/4
11. y=-3/2x+6
12. y=3/2x+6

13. y=-3/2x-6
14. y=-2/3x-4
15. y=2/3x+2/3
16. y=18-4x 

Use complete sentences to describe why postulates are helpful.

Answers

Answer:

Postulates are the base structure of Mathematics.

Step-by-step explanation:

Postulates are suggestion or assumptions that something is true based on reasoning, for example, the definition of a point in Euclidian Geometry.

Therefore, mathematics is grounded in systems of postulates that are tacitly true. Those postulates are used to define and demonstrate theorems, which are the strong structure of every law in Mathematics.

The postulates are helpful as they are  taken to be true without proof and  are basic structure from which lemmas and theorems are derived .

What are postulates?

A statement, also known as an axiom, which is taken to be true without proof. Postulates are the basic structure from which lemmas and theorems are derived. The whole of Euclidean geometry, for example, is based on five postulates known as Euclid's postulates.

According to the question

Postulates are helpful because they are basic structure from which lemmas and theorems are derived and they are also known as an axiom, which is taken to be true without proof.  

Hence, postulates are helpful as they are  taken to be true without proof and  are basic structure from which lemmas and theorems are derived .

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A store manager timed Janette to see how long it would take her to fold and put away a sweater, a shirt, a pair of pants, and a scarf. It took her 26.1 seconds for the shirt, 24.3 seconds for the sweater, 32.8 seconds for the pants, and 18.2 seconds for the scarf. What was the average time it took Janette to fold and put away all four items

Answers

25.35 seconds. Add all 4 numbers and divide by 4

Answer:

25.4 seconds

                                 

36 is 75% of what number

Answers

The answer should be 48

The percentage is the method of distributing the numbers in a range from 0 to 100. The number 36 is 75% of 48.

To find the number that 36 is 75% off, use the following steps:

Remember that per cent means "per hundred." So, 75% can be written as the fraction 75/100 or the decimal 0.75.

Let's call the unknown number "x". We want to find the value of "x" that satisfies the equation: 36 = 0.75 * x.

To solve for "x", we need to isolate it on one side of the equation. We can do this by dividing both sides of the equation by 0.75.

36 / 0.75 = (0.75 * x) / 0.75

Simplifying the right side, we get:

36 / 0.75 = x

Evaluating the left side of the equation, we have:

48 = x

Therefore, 36 is 75% of 48.

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Salumé bought 4.59 pounds of lobster for $39.98. How much did she spend per pound of lobster? Round your answer to the nearest cent. A. $7.11 B. $35.39 C. $8.71 D. $9.99

Answers

The answer is C. Take the amount of money that she spent divided by the amount of lobster that she bought and you will get how much she spent per pound.
c. 39.98/4.59 =8.71.…

how can i show my work for 0.4 divide 1.44

Answers

Draw a picture showing the groups

What value makes 2 square root 51 equal to 10 square root 51x

Answers

25 is the answer
hope it helps

How many subsets of the set m,a,t,h,c,o,u,r,s,e contain at least one vowel

Answers

Final answer:

The given set contains 10 elements. Subsets with at least one vowel can be found by considering different combinations of vowels in the set which is 3 + 3 + 0 = 6.

Explanation:

The given set m,a,t,h,c,o,u,r,s,e contains 10 elements.

In order to find the number of subsets that contain at least one vowel, we need to consider the possible combinations of vowels in the set.

If we consider only one vowel, there are 3 vowels in the set (a, o, and u). Therefore, there are 3 choose 1 = 3 subsets.If we consider two vowels, there are 3 choose 2 = 3 subsets.If we consider three vowels, there is 1 choose 3 = 0 subset (as there is only 1 vowel left).

Therefore, the total number of subsets that contain at least one vowel is 3 + 3 + 0 = 6.

Final answer:

To find the number of subsets of the set m,a,t,h,c,o,u,r,s,e that contain at least one vowel, we can count the number of subsets that have no vowels and subtract it from the total number of subsets.

Explanation:

To find the number of subsets of the set m,a,t,h,c,o,u,r,s,e that contain at least one vowel, we can count the number of subsets that have no vowels and subtract it from the total number of subsets. The given set contains 9 consonants and 5 vowels. So, the number of subsets with no vowels is equal to the number of subsets of the 9 consonants, which is 2^9 = 512.

The total number of subsets of the given set is 2^14 = 16384. Therefore, the number of subsets that contain at least one vowel is 16384 - 512 = 15872.  

What is the domain for the given function?
X. Y
-6. -7
-1. 1
0. 9
3. -2

A. {X|x= -6, -1, 0, 3}
B {y|y=7,-2,1,3,9
C ×|x = -7,-6,-2,-1,0,1,3,9
D. Y|y =-7,-6,-2,-1,0,1,3,9

Answers

The Answer To Your Question Is C I Believe :)

domain is values of x

so answer is
A. {X|x= -6, -1, 0, 3}

A sack full of medals contains gold, silver, and bronze. If selected at random, the probability of picking a gold medal is 5/12. The probability of picking a silver medal is 1/3. What is the probability of picking a bronze medal? Express the probability as a number between 0 and 1.

Answers

Final answer:

The probability of picking a bronze medal is found by subtracting the probabilities of picking a gold and a silver medal from 1. As the probability of picking gold is 5/12 and silver is 1/3 (or 4/12), the probability of picking bronze is 1 - (5/12 + 4/12) = 1/4 or 0.25.

Explanation:

The probability of picking each type of medal from the sack adds up to 1 since one of the medals must be picked. Given the probability of picking a gold medal is 5/12 and the probability of picking a silver medal is 1/3, we can calculate the probability of picking a bronze medal by subtracting the probabilities of picking a gold or silver medal from 1.

First, let's find a common denominator for 5/12 and 1/3, which is 12. The probability of picking a silver medal expressed with the denominator 12 is 4/12 (since 1/3 equals 4/12).

Now, we add the probabilities of picking a gold or silver medal: 5/12 + 4/12 = 9/12.

Finally, we subtract this sum from 1 to find the probability of picking a bronze medal:
1 - 9/12 = 3/12, which simplifies to 1/4.

Therefore, the probability of picking a bronze medal is 1/4, or 0.25 when expressed as a number between 0 and 1.

What is the relationship between 5.34 x 10^5 and 5.34 x 10^-2?

5.34 x 10^5 is 100,000 times greater/less than 5.34 x 10^-2

5.34 x 10^5 is 1,000,000 times greater/less than 5.34 x 10^-2

5.34 x 10^5 is 10,000,000 times greater/less than 5.34 x 10^-2

5.34 x 10^5 is 100,000,000 times gteater/less than 5.34 x 10^-2

Answers

5.34 x 10^5 is 10,000,000 times greater/less than 5.34 x 10^-2 
5.34 x 10^5 = 10,000,000 and 5.34 x 10^-2 = 0.0534 thus  c: is your answer.

Answer: THAT MAKES NO SENCE

Step-by-step explanation:

Which problem can be solved using base-10 blocks? A. Simplify x − (x + 2). B. Model the sum of 950 and 26. C. Order 2.7, 3.1, and 2.9 from greatest to least. D. Plot the points (2, 5) and (4, 9).

I need help ASAP

Answers

The answer is B.ejdjshsjdj

What do you add to 2 3/8 to make 6

Answers

29 because first u add 5 then 8 3 times.

slove the equation y=mx+b for m

a)m=y-b-m
b)m=(y-b)m
c)m=y+b/x
d)m=y-b/x

Answers

Subtracting b from both sides, we get y-b=mx. Next, we can divide x from both sides to get (y-b)/x=m. This does not fit into any option, however, as y-b/x is different from (y-b)/x due to that in the former, you first do b/x while in the latter you have to subtract b from y first

Pls help me I need help

Answers

4(5)-12
20-12
8

It would equal 8


The answer would be 8

Please answer questions 1 and/or 2, thnx

Answers

55.79 = 0.99d + 39.95

55.79 - 39.95 = 15.84

0.99d = 15.84

0.99d/0.99 = 15.84/0.99

d = 16

2) Equation = 12.6 million = 4(x) + 1 million
12.6 million - 1 million = 11.6 million
11.6 million/4 = x
x = 2900000

hope this helps
1. 39.95 + 0.99d= 55.79

0.99d=55.79-39.95
0.99d= 15.84
d= 15.84/0.99 =16

Ans = 16 DVDs

2. 12600000-1000000= 4p
 
12600000-1000000=4p
12500000=4p
p= 12500000/4
p= 3125000 or 3.125 million

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