Mathematics Middle School

n(5+2) -15 ; n = 5 .

Answers

Answer 1

Answer:

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Step-by-step explanation:

Step 1: Define

n(5 + 2) - 15

n = 5

Step 2: Simplify

(Parenthesis) Add: 7n - 15

Step 3: Evaluate

Substitute in n: 7(5) - 15Multiply: 35 - 15Subtract: 20

Answer 2

Answer:

Step-by-step explanation:

So, the question said that n=5 so we will input 5 to replace n.

5(5+2)-15

Now, solve the problem

5(5+2)-15

5 x 7- 15

35-15

Thus, the answer is 20

Related Questions

mewooooooooooooooooooooo

Answers

Answer:

Step-by-step explanation:

2 5

4 10

8 15

10 25

i think lol

Please help id appreciate it and please give me full answers. I will report.

Jane is training for a triathlon. After swimming a few laps, she leaves the health club and bikes 16 miles south. She then runs 12 miles west. Her trainer bikes from the health club to meet Jane at the end of her run.

How much farther does Jane travel than her trainer? Answer the questions to find out.

1. What is the total distance Jane travels biking and running? Include units with your answer.

2. Use the Pythagorean theorem to write an equation for the distance Jane's trainer bikes.

3. Solve your equation to find the distance Jane's trainer bikes. Show your work.

4. How much farther does Jane travel than her trainer?

Answers

Answer:

Part 1. 28 miles

Part 2. 16^2 + 12^2 = c^2

Part 3. 8 miles. All work is in step by step explanation.

Part 4. 8 miles

Step-by-step explanation:

Part 1. The total distance that Jane travels biking and running is 28 miles. This is because we add 16 and 12 which is her total route.

Part 2. The Pythagorean theorem is a^2 + b^2 = c ^2. In this case, the variable a is Jane's bike route(16 miles), the variable b is Jane's running route(12 miles), and the variable c is the Trainer's biking route as given. If we replace all variables with the values in miles, the equation would be 16^2 + 12^2 = c^2.

Part 3. WORK USED FROM EQUATION

16^2 = 16*16 = 256

12^2 = 12*12 = 144

Now we replace the numbers with the exponents with the solved numbers.

256 + 144 = c^2

256 + 144 = 400

400 = c^2

c = sqrt400

c = 20

Finally, we take the value of c and subtract it from the total distance of Jane's route which is 28 miles(as explained above).

28 - 20 = 8.

Hence, the answer is 8 miles

.
3 x 2.5 =

2 x 3.4 =

Answers

Answer:

7.5

6.8

Step-by-step explanation:

hope it helped :-)

Answer:

7.5

6.8

Step-by-step explanation:

because 3x 2.5 is 7.5 and 2x3.4 is 6.8

Which relation is a function

Answers

Answer:

Look at image posted.

Step-by-step explanation:

The one I circle would be the answer because there should not be 2 points for every x-axis value. The 1st one has 2 points with x=0, the other 2 also have 2 points on the asme x axis value

A company that makes hair-care products had 7,000 people try a new shampoo. Of the 7,000 people, 56 had a mild allergic reaction. What percent of the people had a mild allergic reaction?

Answers

.6 your welcome also a brainliest would be appreciated

Answer:

0.8%

Step-by-step explanation:

Can you help this this question
40 points

Answers

Do you need this in a graph form?

Answer:

1. Equation 1

2. -2x-3(6x-11)=-7

3. x=2

4. y=1

5. (2,1)

A shelf has 4 blue pairs of pants, 2 black pairs of pants, 1 white pair of pants, and 3 tan pairs of pants. You randomly choose a pair of pants from the shelf. What is the probability of choosing a blue pair of pants as a percent? - the answer isn’t 60%.

Answers

Answer:

Probability can best be seen as the total number of “successful” outcomes (non blue pants) divided by the total number of possible outcomes (all pants). Normally, you express probability as a fraction (6/10), a ratio (6:10), or a percentage (60%). You could also express the probability as .6, or 6 out of 10.

My thought process: There are 4 pair of blue pants and 6 pair of non-blue pants. When you pick, you have 4 chances (pants) out of 10 chances (pants) of getting blue, and, therefore, 6 chances (pants) out of 10 chances (pants) of getting “not blue”. That is 60%; 6:10; 6/10; .6; or 6 out of 10.

Simplify the expression all the way down.

−5(1+2k)−8(−4+5k)
Question 1 options:

-50k+27

-30k+37

-5-10k+32-40k

32-5-40k

Answers

Answer:

-50k+27

Step-by-step explanation:

=(−5)(1)+(−5)(2k)+(−8)(−4)+(−8)(5k)

=−5+−10k+32+−40k

Combine Like Terms:

=−5+−10k+32+−40k

=(−10k+−40k)+(−5+32)

=−50k+27

Help me with this math plz

Answers

The circumference of the circle would be C= 113.0973ft.

Answer:im late but 1 year would be 2809

Step-by-step explanation:

problem in the picture

Answers

Answer:

Step-by-step explanation:

65 x 2.5 = 162.5

70 x 1.5 = 105

162.5+105=267.5

The answer is b
65 x 2.5=162.5
70x 1.5=105
105+162.5=267.5

what is (16)^(0.25)⠀⠀⠀⠀⠀⠀⠀⠀

Answers

Answer:

the answer is 2

I hope this helped :)

Answer:

the correct answer is 2

just it

need help asap
will give brainly

Answers

I think it is A b hope that helps

You pick a card at random.

6789

What is P(9)?

Answers

- i am assuming P(9) means probability of 9.

what we know:

there is only one 9 in the number.

there are 4 digits in total.

answer:

1/4

-- let me know if you have questions regarding this.

Charlie's puppy, Max, weighs 8 pounds.How many ounces does Max weigh?

Answers

Answer:

128 ounces

Step-by-step explanation:

1 lb = 16 oz

8 * 16 = 128 oz

Max weighs 128 ounces.

Step by Step: There are 16 ounces in 1 pound so if you do 16x8 you end up with 128 ounces. HOPE THIS HELPS!!!!

I need help with number 4... ;-;

Answers

Answer:

I picked C because it depends on the temperature that is being presented in the area. In a hotter area, a larger scale wind will be place. In a colder area a local wind would preferably be placed.

Answer:

All wind is caused by the uneven heating of the earth's surface, which sets convection currents in motion, convection currents on a large scale cause global winds: convection currents on a small scale cause local winds.

hope this helps!!:)

Step-by-step explanation:

On a math test, 4 out of 20 students received an A. Two students are randomly selected without replacement, and the first student has an A. What is the probability of the second student having an A?

Answers

Answer:

Step-by-step explanation:

The answer should be 20% chance

Two students selected without replacement, and the first student and second student having is 16/95

Probability-based problem:

What information do we have?

Number of total students = 20

Number of students having A = 4

Two students selected without replacement, and the first student has an A = 4/20 × 16/19

Two students selected without replacement, and the first student has an A = 64 / 380

Two students selected without replacement, and the first student has an A = 16 / 95

Probability of the second student having an A = 16/20 × 4/19

Probability of the second student having an A = 64 / 380

Probability of the second student having an A = 16 / 35

Find out more information about 'Probability'.

https://brainly.com/question/11234923?referrer=searchResults

Ms. Li gave her students a quiz that was supposed to take 6 minutes to complete. She asked her students to record the amount of time, to the nearest minute, that it took them to complete the quiz. Ms. Li wants to create a data display that will summarize the data and show how many students took 6 minutes to complete the quiz. Which data display should she create?

A. a box plot

B. a dot plot

C. a histogram with intervals 1-3, 4-6, 7-9, and 10-12

D. a histogram with intervals 1-4, 5-8, and 9-12

Answers

A would be your answer

Answer:

Step-by-step explanatits b

its b

What is the relationship between the ratios? 10:14 and 30:36 Drag and drop to complete the statement. The ratios are (porportional, not porportional)

Answers

Answer:

Not Proportional

Step-by-step explanation:

30/10 = 3

36/14 = 2.57142857143

Answer:

The ratios are not proportional

Step-by-step explanation:

Help PLZ I will give 15 points and brainliest!!!

Answers

The answer would be 864. You use order of operations. First parentheses then exponents then multiply. Hope this helps!!

help with this problem

Answers

Answer: X= -1/4

Hope it helps!

X= -1/4 hope this helped

I NEED YOUR HELP!!
The table shows input and output values of a function given a rule. Which function represents the rule?
Input: x, a number; Output: y, 3 less than 2 times x
Input,x -2 -1 0 1 2
Output,y -7 -5 -3 -1 1

A. Y= 2x - 3
B. Y= -2x + 3
C. Y= -3x - 2
D. Y= 3x + 2

Answers

It’s A
Because 2 times x is 2x, and 3 less than that is -3. So we can write them into 2x - 3 = Y

The correct function for the given rule will be;

⇒ Y = 2x - 3

What is an expression?

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

Given that;

Input: x, a number

Output: y, 3 less than 2 times x

And,

Input, x -2 -1 0 1 2

Output, y -7 -5 -3 -1 1

Now,

Since, For the function we have;

Input: x, a number

Output: y, 3 less than 2 times x

So, We get;

The function is,

⇒ Y = 2x - 3

And, Here given that;

Input, x -2 -1 0 1 2

Output, y -7 -5 -3 -1 1

Substitute all the values and check it as;

⇒ Y = 2x - 3

Put Y = - 7 , x = - 2

⇒ - 7 = 2 × - 2 - 3

⇒ - 7 = - 4 - 3

⇒ - 7 = - 7

Thus, The value of function is,

⇒ Y = 2x - 3

Learn more about the mathematical expression visit:

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Find the slope of the line in the graph.

Answers

Answer: m = -2

Step-by-step explanation: To get from one point to the next along this line,

we must first go down 2 units so we say that our rise is -2.

From there we move 1 unit to the left so our run is 1.

So our slope or rise over run is -2/1 or -2.

help with this question

Answers

For A you should put -3 and for b put 2

For a put -3 then for b put the 2 then u finished

vocabulary is a repeating decimal a rational number?

a. no because it cannot be written in form of a/b where a and b are intergers and b=0

b. no because it cannot be written in form a b where a and b are integers.

c. yes because it can be written in the form a/b where a and b are integers are b=0

d yes because it can written in the a.b where a and b integers.

Answers

d
if not d, it’s probably c, but the denominator for a repeating decimal (b) shouldnt always be 0, it could be 1. ex: .333/1

Yes, because it can be written in the form a/b where a and b are integers are b = 0. Then the correct option is C.

What is a rational number?

If the value of a numerical expression is terminating then they are the rational number then they are called the rational number and if the value of a numerical expression is non-terminating then they are called an irrational number.

The vocabulary is a repeating decimal a rational number will be given as,

Yes, because it can be written in the form a/b where a and b are integers are b = 0.

Then the correct option is C.

More about the rational number link is given below.

https://brainly.com/question/9466779

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