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
Kay [80]
3 years ago
11

The perimeter of an equilateral triangle is 21cm, find its length

Mathematics
2 answers:
Margarita [4]3 years ago
7 0

Answer:

7cm is the length for each side of an equalateral triangle

Talja [164]3 years ago
3 0

Answer:

7 cm

Step-by-step explanation:

An equilateral triangle has all sides equal.

To find the measure of the side, simply divide the perimeter by 3. This is because a triangle has 3 sides.

21 ÷ 3 = 7

You might be interested in
Each unit on the grid stands for one miles determine two ways to calculate the distance from josie's house to annies
Novosadov [1.4K]
I encountered this problem before but it had an accompanying image and list of answer choices.

I'll attach the image and include the list of options. 

Each unit on the grid stands for one mile. Determine two ways to calculate the distance from Josie's house to Annie's house.
A) Distance Formula and Slope Formula
B) Midpoint Formula and Slope Formula
C) Distance Formula and Midpoint Formula
<span>D) Distance Formula and Pythagorean Theorem
</span>
My answer is: D.) Distance formula and Pythagorean Theorem.

When looking at the image, I can visualize a right triangle. I'll simply get the measure of the long and short legs and solve for the hypotenuse. 
Since the distance formula is derived from the Pythagorean theorem, it can be used to determine the distance from Josie's house to Annie's house.

8 0
3 years ago
What is the undefined value of 3b^2+13b+4/b+4 ?<br><br> O 4 <br> O 0 <br> O -3<br> O -4
exis [7]

Answer:

0

Step-by-step explanation:

when you divide anything by 0 it becomes undefined

4 0
3 years ago
1. Rosie receives P100.00 daily allowance given by her parents. She spends P15.00 for transportation, P50.00 for snacks and she
jonny [76]

Answer:

10101001199191919191i2

7 0
3 years ago
Read 2 more answers
Thirty-eight and ninety seven hundredths in standard form
mr_godi [17]
Thirty-eight is 38

Ninety seven hundredths is 0.97

So the whole thing would be 38.97
4 0
3 years ago
Read 2 more answers
21​% of adults would pay more for environmentally friendly products. You randomly select 10 adults. Find the probability that th
ElenaW [278]

Answer: a) 0.3011

b) 0.3526

c) 0.6455

Step-by-step explanation:

Given : The proportion of adults would pay more for environmentally friendly products : p= 0.21

Sample size : n= 10

Let x be a binomial variable that denotes the number of adults would pay more for environmentally friendly products.

Using binomial distribution, P(x)=^nC_xp^x(1-p)^{n-x}

a) The probability that the number of adults who would pay more for environmentally friendly products is exactly 2 will be :-

P(x=2)=^{10}C_2(0.21)^2(1-0.21)^{10-2}\\\\=\dfrac{10!}{2!(10-2)!}(0.21)^2(0.79)^8\approx0.3011

The probability that the number of adults who would pay more for environmentally friendly products is exactly 2=0.3011

b) The probability that the number of adults who would pay more for environmentally friendly products is more than​ two will be :-

P(x>2)=1-P(x\leq2)=1-(P(x=0)+P(x=1)+P(x=2))\\\\=1-(^{10}C_0(0.21)^0(1-0.21)^{10}+^{10}C_1(0.21)^1(1-0.21)^{9}+0.3011)\\\\=1-((0.79)^{10}+(10)(0.21)(0.79)^9+0.3011)\\\\=1-(0.0946+0.2517+0.3011)\\\\=1-0.6474=0.3526

The probability that the number of adults who would pay more for environmentally friendly products is more than​ two =0.3526

c) The probability that the number of adults who would pay more for environmentally friendly products is between two and​ five, inclusive will be :-

P(2\leq x\leq5)=P(x=2)+P(x=3)+P(x=4)+P(x=5)\\\\=0.3011+^{10}C_3(0.21)^3(1-0.21)^7}+^{10}C_4(0.21)^4(1-0.21)^{6}+^{10}C_5(0.21)^5(1-0.21)^{5})\\\\=0.3011+\dfrac{10!}{3!7!}(0.21)^3(0.79)^7+\dfrac{10!}{4!6!}(0.21)^4(0.79)^6+\dfrac{10!}{5!5!}(0.21)^5(0.79)^5\\\\=0.3011+0.2134+0.0993+0.0317=0.6455

The probability that the number of adults who would pay more for environmentally friendly products is between two and​ five, inclusive =0.6455

4 0
3 years ago
Other questions:
  • Can I have some help
    14·1 answer
  • a fireplace contains 54 bricks along its bottom row. if each row above decreases by 3 bricks, what is the function that shows th
    5·2 answers
  • Choose the graph below that correctly represents the equation 15x − 5y = 30.
    8·2 answers
  • What is the inverse of the function f(x) = x +3?
    8·1 answer
  • How do you solve linear equations using substitution
    9·1 answer
  • A construction worker bought several bottles of juice for $3 at the convenience store. She paid for them with a $20 bill. If i r
    5·1 answer
  • An international company has
    7·1 answer
  • What line has a slope of -5 and a y intercept at 3
    15·1 answer
  • Which of the following is equivalent?
    11·1 answer
  • 1. Use the method described in the activity to find the rational zeros for<br> -10x3 + 15x+ 16x-12.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!