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
Evgen [1.6K]
3 years ago
15

An equilateral triangle has a perimeter of 12 x + 18 units. Which expression can be used to show the length of one side of the t

riangle?
Mathematics
2 answers:
yawa3891 [41]3 years ago
8 0

Answer:

3 (4 x + 6): Each side length is 4 x + 6 units.

I think that is the right answer?

adelina 88 [10]3 years ago
4 0

Answer:

So each side length is 4s+6

Step-by-step explanation:

Since we know the triangle is an equilateral triangle, we know the perimeter of the triangle is given by since all the sides are the same length

P = 3s  where s is the side length

12x+18 = 3s

Divide each side by 3

12x/3 + 18/3 = 3s/3

4s +6 = s

So each side length is 4s+6

You might be interested in
a 1ft long piece of wire needs to be divided into two pieces which will form the shape of a circle and a square. Determine the l
yan [13]

Answer:

Length of wire for circle is 0.44 ft

Length of wire for square is 0.56 ft

Step-by-step explanation:

Let x is circumference of the circle

then

(1-x) = perimeter of the square

Find the radius of the circle

r =  (x/2.π)

Find the area of the circle

a =  π(x/2π)^2

a =  π(x^2/4π^2)

Cancel π

a =  x^2/4π

Find the area of the square:

a =  (1-x/4)^2

a =  (1-2x+x^2)/16

Total area

A =  (x^2/4π)+(1-2x+x^2/16)

A = 4x^2+3.142-6.284x+3.142x^2

A = 7.142x^2-6.284x+3.142

Find the axis of symmetry [x = -b/(2a)]

x =  -(-6.284)/{2.(7.142)}

x =  6.284/14.284

x = 0.44 ft, the piece of wire creating a circle

and

1 - 0.44 = 0.56 ft, the piece of wire creating the square

These lengths should give minimum area of the circle and square together

7 0
3 years ago
Decide if the following scenario involves a permutation or combination. Then find the number of possibilities. The student body
Troyanec [42]

Answer:

735,130.

Step-by-step explanation:

The order of election of the 3 representatives does not matter so it is a combination.

The number of possible combinations

= 165! / 162! 3!

=  (165 * 164 * 163) / (3*2*1)

= 735,130.

6 0
3 years ago
If n =270 and (p-hat) =0.43, find the margin of error at a 99% confidence level.. give answer to 3 decimals
Troyanec [42]

Answer:

0.078

Step-by-step explanation:

Margin of error = z√(p(1-p)/n)

Given

p-hat = 0.43

n = 270

z at 99% confidence interval = 2.576

Substitute

MOE = 2.576√0.43(1-0.43)/270

MOE = 2.576√0.43*0.57/270

MOE = 2.576√0.2451/270

MOE = 2.576*0.030129

MOE = 0.078

Hence the margin og error is 0.078

7 0
2 years ago
Which scatterplot shows a negative correlation? Multiple-choice answer
aliina [53]
The one the points down shows a negative correlation. a positive correlation points up

your answer here is d
4 0
3 years ago
Read 2 more answers
Five divided by the sum of three times a number and one is equal to 20. find the number
Kipish [7]

Answer:

4

Step-by-step explanation:

5 divided by 3 times

5/5/5=.2

.2*20=4

8 0
3 years ago
Other questions:
  • The perimeter of a certain rectangle is 16 times the width. The length is 12cm more than the width. Find the length of the recta
    8·1 answer
  • A pigeon can fly 84 kilometers per hour. how long does the pigeon take to fly 7 kilometers?
    9·2 answers
  • Fred is going to take a flight from miami
    10·1 answer
  • What is the joint relative frequency for 11th graders who want the break in the afternoon? Round to the nearest percent.
    15·1 answer
  • 7 times the sum of a squared and b minus 4 times the sum of a squared and b
    10·1 answer
  • Lisa lit a candle with a height of 8 inches. When lit, this candle loses 10% of its original
    7·1 answer
  • 15.5z = −77.5 ?<br> What does the z stand for?<br> (Show all work if possible!!)<br> Thank you
    10·2 answers
  • ONLY ANSWER THIS IF YOU HAVE AN EXPLANATION AND IF YOU KNOW WHAT THE ANSWER IS.
    9·2 answers
  • 15 points if you answer this question!!!
    10·2 answers
  • Taylor saw sunglasses for $90, that were on sale for 10% off. She had her Employee
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!