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
defon
3 years ago
15

Place parentheses and brackets in the expression below so that it equals 18.

Mathematics
1 answer:
Ahat [919]3 years ago
5 0

Answer:

18

Step-by-step explanation:

\{{2}^{3} (4 \div 2)  \}+ 2 \\  \\  =  \{{2}^{3} \times 2 \} + 2 \\  \\  =  {2}^{3 + 1}  + 2 \\  \\  =  {2}^{4}  + 2 \\  \\  = 16 + 2 \\  \\  = 18

You might be interested in
e. 2y(y + 3)this is not a quiz it is an assignment that is due tomorrow and I Wil be grateful for anyhelp
Elena-2011 [213]

We need to multiply

-2y(y+3)

We need to use the distributive property to expand this:

a(b+c)=ab+ac

Let's multiply it out using this property, to get our answer:

\begin{gathered} -2y(y+3) \\ =-2y(y)+(-2y)(3) \\ =-2y^2-6y \end{gathered}

6 0
1 year ago
330-200 using the arrow way
drek231 [11]
330-> -100 = 230, 230-> -100= 130
(I literally just watched a video how to do this, I never had to do it this way when I was in 2nd grade)
[130 final answer]
4 0
2 years ago
Let ​ f(x)=x2+5x−36 ​. Enter the x-intercepts of the quadratic function in the boxes.
san4es73 [151]
Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation : 

                     x^2-5*x-(36)=0 

Step by step solution:<span> Step 1:</span> Trying to factor by splitting the middle term

<span> 1.1 </span>    Factoring <span> x2-5x-36</span> 

The first term is, <span> <span>x2</span> </span> its coefficient is 1.
The middle term is, <span> -5x </span> its coefficient is  - 5.
The last term, "the constant", is <span> -36 </span>

Step-1: Multiply the coefficient of the first term by the constant <span> <span> 1</span> • -36 = -36</span> 

Step-2: Find two factors of  -36  whose sum equals the coefficient of the middle term, which is - 5.

<span><span>     -36   +   1   =   -35</span><span>     -18   +   2   =   -16</span><span>     -12   +   3   =   -9</span><span>     -9   +   4   =   -5   That's it</span></span>


Step-3: Rewrite the polynomial splitting the middle term using the two factors found in step 2 above,  -9  and  4 
                     <span>x2 - 9x</span> + 4x - 36

Step-4: Add up the first 2 terms, pulling out like factors :
                    x • (x-9)
              Add up the last 2 terms, pulling out common factors :
                    4 • (x-9)
Step-5: Add up the four terms of step 4 :
                    (x+4)  •  (x-9)
             Which is the desired factorization

<span>Equation at the end of step  1  :</span> (x + 4) • (x - 9) = 0 <span>Step  2  :</span>Theory - Roots of a product :

<span> 2.1 </span>   A product of several terms equals zero.<span> 

 </span>When a product of two or more terms equals zero, then at least one of the terms must be zero.<span> 

 </span>We shall now solve each term = 0 separately<span> 

 </span>In other words, we are going to solve as many equations as there are terms in the product<span> 

 </span>Any solution of term = 0 solves product = 0 as well.

Solving a Single Variable Equation :

<span> 2.2 </span>     Solve  :    x+4 = 0<span> 

 </span>Subtract  4  from both sides of the equation :<span> 
 </span>                     x = -4 

Solving a Single Variable Equation :

<span> 2.3 </span>     Solve  :    x-9 = 0<span> 

 </span>Add  9  to both sides of the equation :<span> 
 </span>                     x = 9 

6 0
3 years ago
Read 2 more answers
Dan bought 1/8 of a pound of
Alja [10]

Answer:

he bought 1 pound

Step-by-step explanation:

1/8 + 7/8 = 7+1=8, same denominator so it stays, =8/8=1

4 0
3 years ago
Read 2 more answers
Proving Vertical Angles Are Congruent
PSYCHO15rus [73]

Answer:

Statements:                                                 Reasons:

1) ∠2 and ∠4 are vertical angles               given

2) limes <em>m </em>and <em>n </em>intersect at <em>P                    </em>definition of vertical angles

3) ∠3 and ∠4 are linear pair                       definition of linear pair

4) ∠2 and ∠3 are linear pair                       definition of linear pair

5) m∠3 + m∠4 =180                                     angle addition postulate

6) m∠2 + m∠3 =180                                     angle addition postulate

7) m∠2 + m∠3 = m∠3 + m∠4                   substitution property

8) m∠2 = m∠4                                             subtraction property

9) ∠2 ≅ ∠4                                                 definition of congruent(≅) angles

4 0
2 years ago
Other questions:
  • An unfair coin with​ Pr[H] = 0.6 is flipped. If the flip results in a​ head, a marble is selected at random from a urn containin
    13·1 answer
  • Suppose y varies directly with x, and y = 8 when x = –6. What direct variation equation relates x and y? What is the value of y
    15·1 answer
  • Which mixed number is equal to 6.5?
    11·1 answer
  • Please help. Determine whether mn is parallel to kl. And why it is parallel. Will reward 20 points
    12·1 answer
  • Pt 2 1-7, please help
    15·1 answer
  • Complete the statement <br><br> 14min=?sec
    10·2 answers
  • The length of a field in feet is a function f(n) of the length n in yards. Write a function rule for this situation.
    13·1 answer
  • If angle 3 is 3x and angle 5 is 2x+30, what are the measures of angle 3 and 5?
    12·1 answer
  • ASAP HELLP PLS, WILL GET BRAINLIEST FOR FIRST CORRECT ANSWER!!!
    13·1 answer
  • I have dyscalculia and I hate math. I am absolutely confused about multi step equations with fractions.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!