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
nalin [4]
3 years ago
8

Three less than 4 times a number is equal to 12 more than seven times the number. What is the number?

Mathematics
1 answer:
kompoz [17]3 years ago
6 0

Answer:

-5

Step-by-step explanation:

4x-3 = 7x+12

  • Subtract 12 from each side

4x-15 = 7x

  • Subtract 4x from each side

-15 = 3x

  • Divide each side by 3

-5 = x

  • Rewrite using symmetric property
<h2><u>x = -5</u></h2>

You might be interested in
Help! how can i determine the range
djverab [1.8K]

Answer:

[-1,\infty)

Step-by-step explanation:

Remember that the range is the set of all y-values. Thus, since the minimum of the function is y=-1, then our range is [-1,\infty). In interval notation, we use brackets to show what's included and parentheses to show what's not included.

3 0
3 years ago
Read 2 more answers
Solve the equation in the complex number system.
tatiyna
To get rid of x^{3}, you have to take the third root of both sides:
\sqrt[3]{x^{3}} = \sqrt[3]{1}
But that won't help you with understanding the problem. It is better to write x^{3}-1 as a product of 2 polynomials:
x^{3}-1 = (x-1)\cdot (x^{2} +x +1)
From this we know, that x-1 = 0 => x = 1 is the solution. Another solutions (complex roots) are the roots of quadratic equation.
3 0
3 years ago
Read 2 more answers
25 POINTS PLEASE HELP ME!! Sam conjectures that for x ≤ - 2, it is true that x^5 + 7 &gt; x^3. Is Sam’s conjecture correct? Why
CaHeK987 [17]

The true statement about Sam’s conjecture is that the conjecture is not correct

<h3>How to determine if Sam’s conjecture is correct or not?</h3>

Sam’s conjecture is given as:

For x ≤ - 2

It is true that x^5 + 7 > x^3.

The inequality x ≤ - 2 means that the highest value of x is -2

Assume the value of x is -2, then we have:

(-2)^5 + 7 > (-2)^3

Evaluate the exponents

-32 + 7 > -8

Evaluate the sum

-25 > -8

The above inequality is false because -8 is greater than -25 i.e. -8 > -25 or -25 < -8

Hence, the true statement about Sam’s conjecture is that the conjecture is not correct

Read more about conjectures at

brainly.com/question/20409479

#SPJ1

5 0
2 years ago
I don't understand this plz help explain how to do it
podryga [215]

Answer:

1. U. 190

2.U. 155

3. U. 240

Step-by-step explanation:

Explanation: To find an angle of a triangle we add the angles we know about

EXAMPLE: 50 + 120. We need to find the third angle.

We know that Angles of triangles should add up to 360

So to find the third angle we add the angle we know about.

EXAMPLE: 50 + 120 = 170 then we Subtract the sum of a triangle *360*

EXAMPLE: 50 + 120 = 170

EXAMPLE: 170 - 360

EXAMPLE: = 190

That's how we find a third angle!

If this doesn't clarify how do to it enough just let me know and i can try to explain more in detail!

Hope this helps you!!!

Have a nice day!

6 0
3 years ago
In which way is a debit cat similar yo a check
katrin [286]
A debit card is similar to a check because they are both taking money out of a bank account under your name.
3 0
3 years ago
Read 2 more answers
Other questions:
  • Please hurry!!<br> What is the measure of angle BCD? 25 40 140 155
    11·2 answers
  • Based on data in the two way table which statement is true
    12·2 answers
  • A hotel charges $90 per day for a double room $80 per day for a single room. If a total of 80 single and double rooms are occupi
    9·1 answer
  • Why did the chicken hit her egg with an ax
    12·2 answers
  • How do you tell someone you like them if you get nervous around them?
    9·1 answer
  • Write the fraction 13/25 as a decimal. Show work
    6·2 answers
  • 5 x 20 x a³ = 72900 what does a equal
    7·1 answer
  • The constants a, c and d are positive. Solve the inequality for x. d - cx &gt; a. if u are a math nerd please help
    14·2 answers
  • Solve x2 = 144<br> A) x = ±12 <br> B) x = ±72 <br> C) x = ±288 <br> D) x = ±20,736
    10·1 answer
  • Please asap I need this for a test
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!