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
A snack bar at an outdoor fair is open from 10 A.M. To​ 5:30 P.M. And has 468 bottles of water for sale. Sales average 1.3 bottl
ch4aika [34]

Answer:

the question is incomplete, so I looked for similar ones

the number of bottles of water remaining as a function of time:

f(x) = -78x + 468

1.3 bottles are sold per minute x 60 minutes per hour = 78 bottles per hour

x = number of hours

the slope is -78

the y intercept is 468

domain = 0 ≤ x ≤ 7.5 hours (from 10 AM to 5:30 PM)

range = 0 ≤ y ≤ 468 bottles

the snack will run out of bottles of water by 4 PM

78x = 468

x = 468 / 78 = 6 hours

if the snack wants to have enough bottles of water to serve all its customers, it will need:

78 x 7.5 hours = 585 bottles of water

5 0
3 years ago
A store is having a sale. You want a pair of jeans that are $90 and a shirt for $50. They are both on sale for 40% off. The tax
gavmur [86]

Answer: 59.92

Step-by-step explanation:

90 + 50 = 140

140 - 40% = 56

56 + 7% = 59.92

6 0
3 years ago
Traveling at 65 miles per hour how long will it take me to drive 310 miles
ycow [4]
Travel at the speeds of 65 miles per hour to drive the distance of 310 miles (if the speed in which the person in question is traveling at the same speed) =
310 divided  by 65 = \frac{310}{65}
= 4 and \frac{10}{13} hours 
since it is "traveled distance = speed multiplied by time it takes 

4 0
3 years ago
Okay so- im really stuck (help is well appreciated)
Minchanka [31]

Answer:

Step-by-step explanation:

The equation is x<= 5.

So 5 and all the numbers less than 5 would be an answer for x.

So you would put a closed dot on 5, because x can equal 5. Then put a line pointing right to all the numbers less than 5.

7 0
2 years ago
Read 2 more answers
Evaluate the expression 4•9+6/-3
kykrilka [37]
You have to multiplying first, then adding on 6 over negative 3 as a fraction. The parentheses it will be multiplying.

(4)(9)+6/-3 

= 34.

It will help you.

Have a great day!


-Charlie
8 0
3 years ago
Read 2 more answers
Other questions:
  • In a list of 200 numbers,each number after the first is 4 more then the number that comes before it.What is the difference betwe
    9·1 answer
  • Solve the equation for x
    12·2 answers
  • A library checked out 52 books. 24 are fiction books what is the ratio for fiction to non fiction books. Please show how it is d
    12·1 answer
  • Archie has a bag of grass seed that he will use to cover a new field. The bag contains information about the area of the ground
    9·1 answer
  • Steve order plaster cases for storing his baseball cards. Each case has a length of 12 centmeters a width of 6.5 centmeters and
    5·1 answer
  • 3(x + 5) this question must be at least 20 characters long so yeah​
    9·1 answer
  • 6
    11·1 answer
  • Evaluate x + y2 (2+ x) if x + 3 and y = -1
    13·1 answer
  • 8 teams dived 23 pizzas equally
    13·1 answer
  • NEED HELP ASAP PLEASE !!! thank you
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!