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
Jobisdone [24]
3 years ago
6

The length of a side of an equilateral triangle is x-4.5.First express it's perimeter as a sum. Next express its perimeter as a

product. Explain why the two expressions are equvalent.
Mathematics
1 answer:
LiRa [457]3 years ago
8 0
The sides of an equilateral triangle are same. So if one of the sides is (x-4.5), all the sides are (x-4.5). 
Let the sides are a=(x-4.5), b=(x-4.5), c=(x-4.5)

1. Perimeter(as sum) = a+b+c
                                    =  (x-4.5)+(x-4.5)+(x-4.5)
                                    = x+x+x-4.5-4.5-4.5
                                    = 3x - 13.5
2. Perimeter (as product) = 3×a    
                                     = 3×(x-4.5)
                                     = 3×x - 3×4.5
                                     = 3x - 13.5
(you can write 3×b or 3×c also as a=b=c.)

<em>Both perimeter as sum and perimeter as product are same as adding a number three times is the same as multiplying it by 3.</em>
You might be interested in
Peter's salary is twice Anne's salary and half of David's salary. Then the average salary of Anne and David is _ of Peter's sala
satela [25.4K]
<h3><u>Answer:</u></h3>

Average of salary of Anne and David is 1.25 of Peter's Salary

<h3><u>Explanation:</u></h3>

In the question, relations between salaries of Peter, Anne, and David is given. From the given relations, we need to make few equations and calculate the average of Anne and David in terms of Peter's Salary.

Let us assume Peter's Salary as P.

Then we can calculate Anne's salary A = \frac{P}{2}.

Also David's salary = D = 2 \times P

Average of Anne's and David's salary = \frac{A+D}{2}

Average of Anne's and David's salary  = \frac{\frac{P}{2} + 2 \times P}{2}

Average of Anne's and David's salary  = \frac{5 \times P}{4}

Average = 1.25 \times P

6 0
3 years ago
Which statement is true
timofeeve [1]

Answer:

The third one.

Step-by-step explanation:

Hope this helps.

4 0
3 years ago
Line l contains the points (9, 6) and (-9, 3). give the slope m of any line perpendicular to l.
aivan3 [116]
The slope of a line with those points is 1/6m. To find a perpendicular slope find the reciprocal of the slope of the first line. The slope is 6m. 

Have a great day, brainliest would be fantastic
6 0
3 years ago
A prime number that is 1 more or 1 less than the value of a factorial is called a factorial prime. Which of the following number
adelina 88 [10]

Answer:

Step-by-step explanation:

3 0
3 years ago
X + y = so please help me out
sladkih [1.3K]

Answer: x + y = z

Example:

Lets say if x 5 and y is 10 then z would equal 15.

5 + 10 = 15

Hope this helped! :)

3 0
3 years ago
Other questions:
  • The linear equation graphed above gives the height in feet above the ground of Shelly t seconds after she opened her parachute w
    8·1 answer
  • One conveyor belt can move 1000 boxes in 9 minutes. Another can move 1000 boxes in 11 minutes. If another conveyor belt is added
    12·1 answer
  • The proof that ΔQPT ≅ ΔQRT is shown. Given: SP ≅ SR Prove: ΔQPT ≅ ΔQRT
    5·2 answers
  • Help like I do not understand math at all
    14·2 answers
  • What is the slope of the line?
    9·2 answers
  • HELP ME NOW PLEASE! WILL GIVE BRAINLY!!!!!!!!!!!!!!!! PLUS 30 POINTS
    12·2 answers
  • Ayuda plissss no entiendo es para hoy no mañana
    7·2 answers
  • Which of the following is an arithmetic sequence?
    9·2 answers
  • Which algebraic expression represents “the difference of 54 and a number”? 54 minus n StartFraction 54 Over n EndFraction 54 n 5
    11·2 answers
  • Help me pls right now I give brainliest
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!