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
notka56 [123]
3 years ago
10

Please help me i need this really bad

Mathematics
2 answers:
lesya [120]3 years ago
7 0
The answer is 3
Multiply 6 by 3 to get the total amount of money for the books then minus the answer 18 which you get from 6 x 3 = 18
Then minus 18 from 21 to get $3
21 - 18 = 3
Ann [662]3 years ago
3 0

Answer:

It's 3!

Step-by-step explanation:

3 books times 6 dollars each = 18 dollars.

21 minus 18 dollars = 3.

You might be interested in
Which two values of x are the roots of the polynomial below? <br> x^2+5x+11
In-s [12.5K]

Answer:

x = -5/2 + i√19 and x = -5/2 - i√19

Step-by-step explanation:

Next time, please share the possible answer choices.

Here we can actually find the roots, using the quadratic formula or some other approach.

a = 1, b = 5 and c = 11.  Then the discriminant is b^2-4ac, or 5^2-4(1)(11).  Since the discriminant is negative, the roots are complex.  The discriminant value is 25-44, or -19.

Thus, the roots of the given poly are:

      -5 plus or minus i√19

x = -----------------------------------

                     2(1)

or x = -5/2 + i√19 and x = -5/2 - i√19

5 0
3 years ago
Read 2 more answers
NEED ANSWER ASAP!! TYYY SO MUCH IN ADVANCE
Kipish [7]

Answer:

24.84

Step-by-step explanation:

use Pythagoras theorem

h=√p²+b² = √(19)²+(16)² = √617 =24.84

4 0
3 years ago
PLEASE HELP!!
jonny [76]

Answer:

  • A. f(n) = (n + 1)^2 – 1

Step-by-step explanation:

Figure 1

  • 3 = 4 - 1 = 2² - 1 = (1 + 1)² - 1

Figure 2

  • 8 = 9 - 1 = 3² - 1 = (2 + 1)² - 1

Figure 3

  • 15 = 16 - 1 = 4² - 1 = (3 + 1)² - 1

<u>The function is:</u>

  • f(n) = (n + 1)² - 1
7 0
2 years ago
What is the solution to -4x+12&lt;36?<br><br> A- x&lt;-6<br> B- x&gt;-6<br> C- x&gt;6<br> D-x&lt;6
Karolina [17]

Answer:

B- x > -6

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right  

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality<u> </u>

Step-by-step explanation:

<u>Step 1: Define</u>

-4x + 12 < 36

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. [Subtraction Property of Equality] Subtract 12 on both sides:                       -4x < 24
  2. [Division Property of Equality] Divide -4 on both sides:                                x > -6
3 0
3 years ago
Is this isosceles triangle acute or equiangular?
Artemon [7]

Answer:

Equiangular triangle

Step-by-step explanation:

3 0
2 years ago
Other questions:
  • Solve the equation.<br><br> −10.1=w+5.3<br> what does w equal
    12·1 answer
  • Basic Gemoetry Question please help
    10·1 answer
  • Does someone get this oh sorry about the picture
    15·2 answers
  • The price of a t-shirt was $25.45. Lizzy gave the clerk $50. How much change did Lizzy get?
    13·2 answers
  • Help me with these equations
    8·1 answer
  • Solve for x. Each figure is a trapezoid.<br> 12) MK = 23 <br> LJ = 4x - 9
    15·1 answer
  • WILL MARK YOU BRAINLIEST HELP ASAP
    6·2 answers
  • Which of the following statement(s) describes the rate of change of f over the interval 1.5 ≤ x ≤ 3? Select all that apply.
    6·1 answer
  • There are white, blue, and red boats in a marina. Five-sixths of the boats in the marina are white,
    6·1 answer
  • Please help I can't figure out the mode
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!