Mathematics Middle School

Evaluate 21 - n for n = 3 *

please help me with this

Answers

Answer 1

Answer:

18

Step-by-step explanation:

21-n; n=3

Substitute n for 3:

21-3

Solve.

18
Answer 2
21-3=18 because n=3 and you’re just subtracting

Related Questions

Please help, best answer will get brainliest

Answers

Answer:

so close!!! positive 2

PLEASE HELP ASAP! BRAINLIEST!
Is this a function???
{(0,2),(1,4),(2,8),(3,16),(4,32),(5,64)}

Answers

Answer:

yes

Step-by-step explanation:

it passes the verticle line test

the x-values only goto one y-value

Trevor's New Year's Resolution is to walk more during the week. On Monday he walked 3/4 miles, on Wednesday he walked 1 and 1/2 miles, and on Friday he walked 2/3 miles. How many miles did he walk altogether?

Answers

Answer-2 11/12
Step by Step explanation
The answer is 2 11/12
You add them all together and all of them aren’t gonna have the same denominator obviously.

PLZ HELP ME TO SOLVE THIS!

Answers

7. V= LWH

V= 3/4 x 3/4 x 3/4
V= 27/64 yd cubed

8. V = LWH

V= 10 1/2 x 16 1/2 x 6
V= 1039 1/2 ft cubed

9. Box A:
V=LWH
V=4 x 2 1/2 x 1/2
V= 5 ft cubed

Box B:
V = LWH
V=2 x 1 1/2 x 1 1/2
V= 4 1/2 ft cubed

So box A has a greater volume since 5 is greater than 4 1/2

Answer:

7. V= LWH

V= 3/4 x 3/4 x 3/4

V= 27/64 yd cubed

8. V = LWH

V= 10 1/2 x 16 1/2 x 6

V= 1039 1/2 ft cubed

9. Box A:

V=LWH

V=4 x 2 1/2 x 1/2

V= 5 ft cubed

Box B:

V = LWH

V=2 x 1 1/2 x 1 1/2

V= 4 1/2 ft cubed

So box A has a greater volume since 5 is greater than 4 1/2

Step-by-step explanation:

A hat at the store is being offered at a 15% discount. If the original price of the hat is x, which answer choice shows an expression that represents the discounted price of the hat?

Answers

.85x is the discounted price of the hat

The discounted price of the hat is 0.85x.

What is discounted price?

Discount is the difference between the marked price (list price) and the selling price of an article. Therefore, the formula used for discount calculation is: Discount = List price - selling price.

Given that, a hat is at 15% discount price, we need to find the expression that represents the discounted price of the hat,

The discount = x - SP

15% of x = x - SP

SP = 85% of x

SP = 0.85x

Hence, the discounted price of the hat is 0.85x.

Learn more about discounted price click;

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Will give Brainliest this is a composite figure show work too and find the area

Answers

Answer:

80 in.

Step-by-step explanation: you add 13 plus 13 plus 7 plus 7 plus 20 plus 20 because for the whole area.

13

13

20

20

 7

 7

-------

80  

hello pls dont answer if you dont know just comment but if you know pls answer ASAP

Answers

Here is your answer in the format of a PNG file.

The last would be a < 40 if you'd be going under $40.

The wildflowers began blooming by my house at the beginning of March. The first week there were 88 blooms. After week two, there were 176 flowers in bloom. If the flowers continue to bloom at the same rate each week, how many flowers will there be after 6 weeks?
A. 264
B. 462
C. 528
D. 536

Answers

Answer: C. 528

Explication: 88x2 weeks= 176 so 88x6weeks=528
First, there were 88 blooms in one week, now they are asking how many flowers will there be after 6 weeks, so you take 88 multiply by 6 (88x6) which gives you 528...so technically you will get C.528

ANSWER: C.528

I hope that helped!!

An annual bike race is 350 miles long. The distance between City A and City B is 43 miles. About how many times as long as the distance between the two cities is the bike​ race. (Estimate) plz help

Answers

Answer:307

Step-by-step explanation:

ummm..

8 times the distance between City A and City B

Conor and Jake's lunch cost 13.00. They left a 15% tip. How much did they leave?

Answers

1 dollar 95 cents is how much they left

Penny reads 12 pages in 1/4 of an hour. What is the unit rate of pages per hour, and what is the unit rate of hours per page? I know the unit rate of pages per hour is 48, but I am stuck on the unit rate of hours per page. I'm coming up with .020833. Please help. Thanks.

Answers

Your correct because 1/4 isn’t necessarily an hour it’s 15 minutes. So if yu divide that you would get .020833 yu would just have to round.

Penny can read 1 page in 1 minute and 14 seconds.

What is a unitary method?

A unitary method is a mathematical way of obtaining the value of a single unit and then deriving any no. of given units by multiplying it with the single unit.

Given, Penny reads 12 pages in 1/4 of an hour.

Now In (1/4)×4 hours, Penny can read (12×4) pages which is in 1 hour she can read 48 pages.

Now to obtain the unit rate of hours per page is we have to divide 1 hour by 48 pages which is (1/48) =  0.020833 hours or (0.020833×60) minutes = 1.24 minutes or 1 minute 14 seconds.

learn more about the unitary method here :

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A composite figure is formed by a square and an isosceles right triangle. If the sides of the square and the legs of the triangle are 6 centimeters in length, what is the area of the figure?

Answers

Answer:

63

Step-by-step explanation:

The Sanchez family is building the dog pen shown.What is the area of the dog pen?
PLEASE HELP

Answers

i think it’s 32 bc 8x4 is 32
The area is when you times the length and the height so 8 x 4 = 32. PLEASE MARK BRAINLIST

Mr. Samual built a circular fenced-in section for some of his animals. The section has a circumference of 55 meters. What is the approximate area, in square meters, of the section? Use 22 7for 휋휋 is has a pic

Answers

Answer:

i think the answer is c.

Step-by-step explanation:

.Just find the radius and then mulitply that.

The answer is C hope this helps

NOTE:the answer is a mixed number not a whole number.

Answers

the answer is 4 1/4 its a mixed number

Answer:

The answer is 4 1/4

as a fraction it is 17/4

please help ill give brainiest

Answers

Answer:

give it

Step-by-step explanation:

the answer is m=1/4

The answer is no solution

B. Graph the inequality from part A.

Answers

Answer:

Not to be like a creep but, do you like kpop? I just saw the you tube tab at the top when I zoomed in and I saw korean.

Step-by-step explanation:

The answer is 1 I believe since it is asking the inequality. but I am not completely sure

Lila decided to make more baked goods for the bake sale. She used 1/8 lb less flour to make bread than to make cookies. She used 1/4 lb more flour to make cookies than to make brownies. If she used 1/2 lb of flour to make the bread, how much flour did she use to make the brownies?

Answers

3/8 is the answer !!!

Ash is 13. They are 4 years older than Jasmin. Jasmin is 6 years younger than Travis. Travis is 7 years younger than Haley. How old is Haley?

Answers

I am pretty sure that would make her 22

Answer:

Haley= 22

Step-by-step explanation:

13- 4= 9

9= Jasmin

9+6= 15

15= Travis

15+7 = 22

22= Haley

On Sunday, Sheldon bought 412 kg of plant food. He used 123kg on his strawberry plants and used 14 kg for his tomato plants.

Sheldon wants to feed his strawberry plants 2 more times and his tomato plants one more time.
He will use the same amounts of plant food as before. How much plant food will he need? Does he have enough left to do so? Explain your answer using words, pictures, or numbers.

Answers

your answer will be 2.5833 hope this helps!!!!

Step-by-step explanation:

tRYNA Finish homework so i can play rob.lox

Sales tax is calculated as a percentage of the sales price. If sales tax is 7%, what is the sales tax on clothing that costs $150?

Answers

Answer:

7% of 150 = 10.5

Step-by-step explanation:

150 x 7% or 150 x 0.07 which would be $10.50

Help me and you get good luck for the rest of 2021 XD
John bought 15 cookies and ate 3 of them. He ate ____% of the cookies. (Make sure to enter the answer using numbers only. Do not enter special characters such as the percent symbol.)

Answers

Answer:

John ate 20% of the cookies

Step-by-step explanation:

Answer:

i dont know if its right but i think 5% bc

Step-by-step explanation:

15 devied by 3 is 5 but i dont  know

Name each expression by the number of it's terms. Use monomial, binomial, trinomial, and polynomial

Answers

Answer:

1. Binomial

2. Trinomial

3. Trinomial

4. Polynomial

5. Polynomial

6. Polynomial

7. Trinomial

8. Binomial

9. Polynomial

10. Monomial

Step-by-step explanation:

1 term = Monomial

2 terms = Binomial

3 terms = Trinomial

More than 3 terms = Polynomial

Use those definitions to classify each.

PLS ANSER ASAP!!! sort out the statements and formulas into the right two categories!

Answers

I just did this question: Distance around a circle,C=nd,C=nr-in circumference of a circle

Area of a circle:A=nr,Measured in square units,(radius)(1/2 circumference)

Which inequality shows that Jerome wants to have read at least 85 pages by the end of Friday

Answers

Answer:

50 + 5p ≥ 85

Step-by-step explanation:

I did it on I-ready

If Jerome wants to have read at least 85 pages by the end of the day on Friday, then the inequality that represents the situation will be 50 + 5p≥ 85

What is inequality?

An inequality is a relation which makes a non-equal comparison between two numbers or mathematical expressions.

here, we have,

Given that

the number of pages he read each day is "p", the number of pages he will read from Monday to Friday is 5p (Monday to Friday is 5 days)

If he has read  50 pages of a novel, the total number of books he has read will be 50 + 5p

If Jerome wants to have read at least 85 pages by the end of the day on Friday, then the inequality that represents the situation will be 50 + 5p≥ 85

Learn more on inequality here:

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complete question:

Jerome has read 50 pages of a novel. He plans to read a certain number of pages, p, each day from Monday to Friday. Which inequality shows that Jerome wants to have read at least 85 pages by the end of the day on Friday?

A. 50 + 5p ≥ 85

B. 50 + 5p ≤ 85

C. 5 (50 + p) ≥ 85

D. 5 (50 + p) ≤ 85

Find the value of .c in the triangle shown below.



Answers

Answer:

x=5.19615 or 3√3. √27

Step-by-step explanation:

A pair of shoes is on sale for 15% off. With this discount, customers will save $9 if they buy the shoes. 15% is the whole, part or percent. $9 is the (blank) and the original price is (blank).

Answers

Answer:

$9 is the part, 15% is the percent, and $60 is the whole.

Step-by-step explanation:

$9 is %15 of the whole. This means $9 is the part, 15% is the percent, and the whole is the total cost of the shoes after the discount. The total cost of the shoes after the discount is 60.

Please help me
Elena can make 15 pizzas in 3 hours. If the number of pizzas is represented by p and time is represented by t, Write an equation that shows the total number of pizzas made in terms of time. [2 points]

Answers

Answer:

p divided by t = 15 divided by 3 =5

Step-by-step explanation:

if you have to divide 15 by 3 to see how many pizza´s can be made in 1 hour.

15 pizza's represents p and 3 hours represents t then it will be p divided by t.

I will give brainliest for the correct answer! Please help it’s due today!

Answers

one iron atom so yeah

There are 60 markers in a bucket and 15% of them don't work. How many markers DO work?

Answers

15% of 60 is 9. So 9 markers work

Answer: 51 do work.

Step-by-step explanation:

60- 15%= 51

Sorry if it’s wrong I’m not that smart

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