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
Sunny_sXe [5.5K]
2 years ago
11

If 3w +6=21 find the value of w

Mathematics
2 answers:
White raven [17]2 years ago
7 0

Answer:

3w + 6 = 21 \\ 3w = 15 \\ w = 5

Vikki [24]2 years ago
5 0

Hey there!

\mathsf{3w + 6 = 21}

<h3>SUBTRACT 6 to BOTH SIDES </h3>

\mathsf{3w + 6 - 6 = 21 - 6}

<h3>CANCEL out: 6 - 6 because that gives you 0 </h3><h3>KEEP: 21 - 6 because it helps you solve for w </h3>

\mathsf{21 - 6 = \boxed{\bf 15}}

<h3>NEW EQUATION: \mathsf{3w = 15}</h3><h3>DIVIDE 3 to BOTH SIDES </h3>

\mathsf{\dfrac{3w}{3}=\dfrac{15}{3}}

<h3>CANCEL out: \mathsf{\dfrac{3}{3}} because that gives you 1</h3><h3>KEEP: \mathsf{\dfrac{15}{3}} because that gives you the value of w</h3><h3>NEW EQUATION: \mathsf{\dfrac{15}{3}=w}</h3>

\mathsf{\dfrac{15}{3}=\boxed{\bf 5}}

\boxed{\boxed{\large\textsf{Therefore, your answer: \huge \bf w = 5}}}\huge\checkmark

\large\text{Good luck on your assignment and enjoy your day!}

~\frak{Amphitrite1040:)}

You might be interested in
A pen costs $.59. How much would a dozen pens cost?
irinina [24]
Y= $0.59(x)
y= $0.59(12)
y=?

y is the total
x is the amount of pen

so you multiply the cost of each pen with the amount of pens
$0.59 times 12
8 0
2 years ago
Read 2 more answers
Problem 4:
Kipish [7]

Answer:

12cm and 16cm

Step-by-step explanation:

The hypotenuse of the right angle triangle  = 20cm

 let the other two sides be x and y;

 The difference;

                x  = y - 4

Problem:

Find x and y;

Solution:

According to the pythagoras theorem;

    x² + y² = 20²  ------ i

       x² + y² = 400 ----- i

and  x - y = 4 ---- ii

So;   x = 4 + y

Now input the value into equation (i);

  (y + 4)² + y² = 400

   (y+4)(y+4) + y² = 400

    y² + y² + 4y + 4y + 16 = 400

    2y² + 8y + 16 = 400

    2y² + 8y + 16 -400 = 0

   2y² + 8y - 384 = 0;

      y² + 4y - 192 = 0

Factorize the equation;

  y² + 16y - 12y - 192 = 0

  y(y + 16) - 12(y + 16) = 0

  (y-12)(y + 16) = 0

     y -12 = 0 or y+ 16 = 0

     y = 12 or -16

It is not realistic for the length of a body to be a negative value, so y= 12;

   since;

    x - y = 4,

    x = 4 + 12

    x = 16

5 0
3 years ago
A computer monitor is listed as being 17 inches. This is the diagonal across the screen. If the screen measures 10 inches in hei
Aneli [31]

diagonal = sqrt(l^ + w^2)

17 = sqrt(10^2 + x^2)

17^2 = 10^2 + x^2

289 = 100 + x^2

189 = x^2

x = sqrt(189) = 13.747

X = 13.75

 width is 13.75 inches

3 0
3 years ago
Are thes coordinates a function or not? <br><br>(2,2)<br><br>(2,7)<br><br>(-2,9)<br><br>(-4,-5)​
blagie [28]

This is not a function. There are multiple outputs for the same input at x=2. A function only has 1 output for every input.

6 0
3 years ago
Read 2 more answers
What fraction of an hour is 18 minutes?<br> Give your answer in its simplest form.
enot [183]

Answer:

3/10

Step-by-step explanation:

An hour is 60 mins

so the fraction would be 18/60

Then you can divide both numbers by 6 to 3/10

4 0
2 years ago
Read 2 more answers
Other questions:
  • Please answer quickly in those 3 question if u know one of those answer than answer it if u don't than its fine
    11·2 answers
  • Let
    13·1 answer
  • I am takin math two, is there any online free tutor that could help me? I’m struggling . Or a YouTube channel to help me?
    12·2 answers
  • The number of motor vehicles registered in millions in the US has grown as follows:
    9·1 answer
  • Line segment MN is shown below. If point P(x,y) partitions the line segment
    6·1 answer
  • What is the 1st quartile? (median of lower<br>half)<br>240<br>235<br>230​
    5·2 answers
  • Factor the common factor out of each expression 64p - 24
    14·1 answer
  • PLS HELP ME!!!!!!! I REALLY NEED THIS!!!!!!!
    8·1 answer
  • 2 colum proofs???? i don’t understand these
    7·1 answer
  • The table below represents a function. Which of the following equations could be its function rule? PLS HELP!!
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!