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
Westkost [7]
3 years ago
8

Find the perimeter of the triangle.

Mathematics
1 answer:
aliina [53]3 years ago
8 0

all the sides of the triangle are the same because this is equilateral. this means:

(21 - x) = (2x - 3) = (x + 5)

Let's take (x+5) and (2x - 3)

x + 5 = 2x - 3   subtract x from both sides

    5 = x -3   add 3 to both sides

          8 = x   you can rearrange this to x=8

Now it's the fun part! SUBSTITUTION! :D (sarcasm)

               <u>BUT WAIT</u> Remember, all of the sides are equal to one another! That means we only have to solve for one side!

Let's do the top side.     21 - 8 = 13

Since there are 3 sides in a triangle, we can easily multiply the 13 by 3

13 x 3 = 39     The perimeter is 39 inches



You might be interested in
PLEASE HELP WITH GEOMETRY!!!
svetoff [14.1K]

Answer:

ok what u need?

Step-by-step explanation:

7 0
3 years ago
Compare. Select &lt;, &gt;, or=.<br> 6.61? 6.610<br> The awnser is 6.610
Svetach [21]

Answer:

6.61=6.610

Step-by-step explanation:

6.61=6.610

After point we can increase no. Of zero.

8 0
3 years ago
Write the fact family for 5,8,and 40
Juli2301 [7.4K]
A fact family is basically just different equations with the same numbers getting the same/different numbers as answers you might say... 
this will make more sense: 
5x8=40
8x5=40
40/8=5
40/5=8
4 0
3 years ago
Part 3 - Discussion/Explanation Question
SpyIntel [72]

Step-by-step explanation:

Vertical asymptote can be Identites if there is a factor only in the denominator. This means that the function will be infinitely discounted at that point.

For example,

\frac{1}{x - 5}

Set the expression in the denominator equal to 0, because you can't divide by 0.

x - 5 = 0

x = 5

So the vertical asymptote is x=5.

Disclaimer if you see something like this

\frac{(x - 5)(x + 3)}{(x - 5)}

x=5 won't be a vertical asymptote, it will be a hole because it in the numerator and denominator.

Horizontal:

If we have a function like this

\frac{1}{x}

We can determine what happens to the y values as x gets bigger, as x gets bigger, we will get smaller answers for y values. The y values will get closer to 0 but never reach it.

Remember a constant can be represent by

a \times  {x}^{0}

For example,

1 = 1 \times  {x}^{0}

2 =  2 \times {x}^{0}

And so on,

and

x =  {x}^{1}

So our equation is basically

\frac{1 \times  {x}^{0} }{ {x}^{1} }

Look at the degrees, since the numerator has a smaller degree than the denominator, the denominator will grow larger than the numerator as x gets larger, so since the larger number is the denominator, our y values will approach 0.

So anytime, the degree of the numerator < denominator, the horizontal asymptote is x=0.

Consider the function

\frac{3 {x}^{2} }{ {x}^{2}  + 1}

As x get larger, the only thing that will matter will be the leading coefficient of the leading degree term. So as x approach infinity and negative infinity, the horizontal asymptote will the numerator of the leading coefficient/ the leading coefficient of the denominator

So in this case,

x =  \frac{3}{1}

Finally, if the numerator has a greater degree than denominator, the value of horizontal asymptote will be larger and larger such there would be no horizontal asymptote instead of a oblique asymptote.

8 0
2 years ago
One bag contains three white marbles and five black marbles, and a second bag contains four white marbles and six black marbles.
Troyanec [42]
It will be 21/40

probability getting both white marbles

3/8×4/10=12/80

probability getting both black marbles

5/8×6/10=30/80

12/80+30/80=42/80= 21/80
5 0
3 years ago
Read 2 more answers
Other questions:
  • What is a 3 2/3 model example?
    8·1 answer
  • If a 14 foot diameter sheave us used to drive a cable car
    6·1 answer
  • There are 5 swimmers in a race. There will be a first-place and a second-place prize awarded. In how many different ways can the
    8·2 answers
  • Which of the following represents the zeros of f(x) = x3 − 3x2 − 2x + 6?
    6·2 answers
  • How do you solve for total intrest when you finance $600 for 24 months at 18%
    9·2 answers
  • Instructions: Find the Measure of the indicated angle to the<br> nearest degree.
    6·1 answer
  • Where is the absolute total frequency located in a two-way frequency table
    13·1 answer
  • Liam will spin the pointer one time what is the probability that the pointer will land on red
    10·1 answer
  • 1.4.4 practice modeling the rescue ship answers
    6·1 answer
  • Find the value of x when : 2^30/8^9=2^x
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!