1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ulleksa [173]
3 years ago
13

Twice the difference of a number and 9 equals 8

Mathematics
1 answer:
ladessa [460]3 years ago
3 0

Answer:

13 is the number.

Step-by-step explanation:

Given:

Twice the difference of a number and 9 equals 8.

Let the unknown number be 'x'.

Therefore, as per question:

The difference of 'x' and 9 = x-9

Twice the difference means 2 times the difference. So, we multiply 2 to the difference. Therefore,

2(x-9)

Now, the above expression is equal to 8. So, we equate the above expression to 8. This gives,

2(x-9)=8

Solving for 'x', we get:

Using distributive property of addition and distributing 2 inside the bracket. This gives,

2\times x-2\times 9=8\\\\2x-18=8\\\\2x=8+18\\\\2x=26\\\\x=\frac{26}{2}=13

Therefore, the unknown number is 13.

Now, we can verify our answer.

2(13-9)=26-18=8

Therefore, the answer is correct.

You might be interested in
Today, 6 friends went out for lunch. Their total bill was $27.60, including tax and gratuity. They decided to split the bill equ
Paladinen [302]

Step-by-step explanation:

Right, okay, so this is a bit of a weird one. Let's go step by step.

"Today, 6 friends went out for lunch." = The number 6 is gonna be in our equation somewhere.

"Their total bill was $27.60" = so is the number 27.6

"They decided to split the bill equally" = 27.6 "split equally" (aka divided by) 6 friends is 4.6

"each paid with a $10 bill" = This is where it gets a lil weird. So, if they divided the bill among them, none of their amounts are gonna be anywhere near ten dollars. This is one of those questions that wouldn't really happen in real life. People would probably use fives instead, but whatever. So a number we'll be using for something is 10.

"How much money will each person get back?" = So we have to find the amount they all paid (10) minus the amount each one had to pay (4.6).

To put it all into a full equation...

10 - ( 27.6 / 6 )

Divide.

10 - 4.6

Subtract.

5.4

Put back into money form.

$5.40

Answer:

Each person will get back $5.40.

7 0
3 years ago
Read 2 more answers
Inverse functions always go in the same direction as the original function. true or false?
zavuch27 [327]
False , that’s why they are inverse
8 0
4 years ago
How to find components of a vector given magnitude and angle?
Zanzabum
<span>1. Find the magnitude and direction angle of the vector.
2. Find the component form of the vector given its magnitude and the angle it makes with the positive x-axis.
<span>3. Find the component form of the sum of two vectors with the given direction angles.</span></span>
3 0
3 years ago
A house that was originally listed for sale at $450,000 has decreased the asking price by 8%. By how much has the price been red
matrenka [14]
450000 * .08
= 36,000
They reduce $36,000 from the original price.
5 0
3 years ago
Find f(3) given that f(3) = -x^4 + 3x^3 + x^2 - 8x - 16.
Hitman42 [59]

Answer: -31

<u>Step-by-step explanation:</u>

f(x) = -x⁴ + 3x³ + x² - 8x - 16

f(3) = -(3)⁴ + 3(3)³ + (3)² - 8(3) - 16

     =  -81  +  81     + 9   -  24  - 16

     = -31

6 0
3 years ago
Other questions:
  • If m&lt;1 = 40 degrees, what is m&lt;5?<br><br> &lt;= angle sign
    7·1 answer
  • A triangle has an area of 36 square units. Its height is 9 units.
    9·1 answer
  • What is this because I don’t know how to find the angle of V if it’s like this
    6·1 answer
  • How to convert 12 mins = ___ hours
    7·2 answers
  • Y= -27(x+4)³+1 the real zero(s) is (are)
    13·1 answer
  • C = (F - 32) * 5/9, the letter "F" is known as which of the following?
    9·1 answer
  • What are the partial products amira will need to find the products
    13·1 answer
  • Help ASAP!! Will give brainliest to correct answer!!
    5·2 answers
  • Find the length of AB.
    8·2 answers
  • Ansley and Maria were baking a birthday cake. The recipe called for 2 3 4 cup of flour. Both girls took turns pouring in the flo
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!