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
insens350 [35]
3 years ago
12

The length of an equilateral triangle is increased by 5 cm. The perimeter of the new triangle is 72 cm. What is the side length

of the original triangle?
Mathematics
1 answer:
Igoryamba3 years ago
6 0

Answer:

19cm

Step-by-step explanation:

An equilateral triangle is a triangle where the length of the 3 sides are the same.

the perimeter is the sum of the 3 sides

for example, if the length of the side of the an equilateral triangle is 5, the perimeter is 5 x 3 = 15

let x = unknown length of side

length after increase = x + 5

(x + 5) x 3 = 72

divide both sides of the equation by 3

x + 5 = 24

subtract 5 from both sides of the equation

x = 24 - 5 = 19cm

You might be interested in
Write a fraction for the portion of the grid that is NOT shaded.
Aneli [31]

7

15

because there are a total of 15 grid and the question asked to pick the grid that doesn't shaded

5 0
3 years ago
Read 2 more answers
I need to solve this problem using the substitution method. I keep getting crazy numbers so I’m definitely doing something wrong
Oksanka [162]

Answer:

S=3 R=1

Step-by-step explanation:

3x1+3=6

1+(3x3)=10

3x3=9

9+1=10.

4 0
3 years ago
girls in the first grade account for one-third of the total strength of the class 3 girls are absent today. find the total stren
BabaBlast [244]
1/3x-3= 4;21 students
7 0
3 years ago
0.75=0.4p+100 what does p equal?
neonofarm [45]

Answer:

p=−248.125

Step-by-step explanation:

  1. Subtract 100 on each side of the equation.
  2. After this, you will have 99.25=0.4p.
  3. Divide each side of the equation by 0.4 to get p by itself.
  4. You should get p= -248.125
3 0
3 years ago
Write each percent as a fraction 13_1/3
bagirrra123 [75]
13.33% is your answer

hope this helps :D

put the repeating sign over the last 3
3 0
3 years ago
Read 2 more answers
Other questions:
  • If y varies directly as x, and y is 400 when x is randy is r when x is 4, what is the numeric constant of variation in this rela
    8·1 answer
  • A rectangle has an area of 72 in². The length and the width of the rectangle are changed by a scale factor of 3.5. What is the a
    6·2 answers
  • Circle Y is shown. Line segments X Y and Z Y are radii. The length of X Y is 16. Sector X Y Z of the minor angle is shaded.
    7·2 answers
  • Rosalie earns extra money by working as a babysitter over the weekend. She charges $10 to drive to the home and an additional $8
    10·1 answer
  • QUESTION IN SCREENSHOT
    12·1 answer
  • jack, Jill and Bill each carried a 48-ounce bucket full of water down the hill. By the time they reached the bottom, jacks bucke
    12·2 answers
  • X + 5y = -2
    10·1 answer
  • What's the answer to number 17....
    15·2 answers
  • Find the value of x and the length of the specified segment ?
    9·1 answer
  • 4. if f (x) = 2x2 – 32, what is the value of f (5)?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!