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
Katena32 [7]
3 years ago
10

The length of a rectangle is three more than its width. The perimeter is 86cm. Find the length and width of the rectangle. Write

an equation and solve
Mathematics
1 answer:
elena-s [515]3 years ago
5 0
P=2(l+w)
Substitute width plus 3 for length
Remember order of operations: multiply before adding

86=2((w+3) + w)
86=2w+6+2w
86=4w+6
80=4w
20=w
23=w+3=l

Check the answer
86=2((w+3) + w)
86=2((20+3)+20
86=2(23+20)
86=46+40
86=86
You might be interested in
How many integers between 100 and 999 (inclusive) have distinct digits
daser333 [38]

Answer:

648

Step-by-step explanation:

Running this in Python, with the code as follows,

import math

cur_numbers = [0] * 3

num = 0

for i in range(100, 1000):

   cur_numbers[2] = i % 10

   i = math.floor(i/10)

   cur_numbers[1] = i % 10

   i = math.floor(i/10)

   cur_numbers[0] = i % 10

   if(len(set(cur_numbers)) == 3):

       num += 1

       print(cur_numbers)

       

print(num), we get 648 as our answer.

Another way to solve this is as follows:

There are 9 possibilities for the hundreds digit (1-9). Then, there are 10 possibilities for the tens digit, but we subtract 1 because it can't be the 1 same digit as the hundreds digit. For the ones digit, there are 10 possibilities, but we subtract 1 because it can't be the same as the hundreds digit and another 1 because it can't be the same as the tens digit. Multiplying these out, we have

9 possibilities for the hundreds digit x 9 possibilities for the tens digit x 8 possibilities for the ones digit  = 648

5 0
2 years ago
Julio is making brownies for the school bake sale.
mel-nik [20]
All of them Are correct, assuming this is the recipe. 
7 0
3 years ago
Jen can bike 12 miles in 40 minutes. How much time will she need to bike 30 miles if her speed remains the same? PLEASE HELP QUI
murzikaleks [220]

Answer: 100 minutes

Step-by-step explanation:

With the given information, we can use a proportion to figure out how long it would take for Jen to bike 30 miles.

\frac{12mi}{40min} =\frac{30mi}{x} \\

12x=30*40

12x=1200

x=100

5 0
3 years ago
Read 2 more answers
HURYY PLEASE EXPLAIN ASAP!!!
Wittaler [7]

Answer:

The answer is 527.5km^3 .

Step-by-step explanation:

The formula for cylinders is πr2h. (pie times twice the height)

3.14(12)(2)(7) = 527.52

5 0
3 years ago
Read 2 more answers
What is the midpoint of (1,-1) and (4,-6)
Andreas93 [3]

Answer:

(5/2, -7/2)

Step-by-step explanation:

The midpoint is the average value of each coordinate

(1+4)/2 , (-1-6)/2

3 0
2 years ago
Other questions:
  • Which unit could be used to measure the weight of a cat?
    14·1 answer
  • A sparkling-water distributor wants to make up 200 gallons of sparkling water to sell for $5.00 per gallon. She wishes to mix th
    11·1 answer
  • Need some help! With any of the questions
    9·1 answer
  • What is the multiplicative rate of change of the exponential function shown on the graph? Two-ninths 1 4 Nine-halves
    9·1 answer
  • Suppose that m∠A = m∠D. Which other fact would guarantee that the triangles are SIMILAR? A) AB DE = CB FE B) m∠C = m∠F C) m∠A +
    14·1 answer
  • (4) Suppose a(t) = 36t + 16, v(0) = -4, and s(1) = 15. Find s(t).​
    5·1 answer
  • Hi!
    14·2 answers
  • I just need help with the last question please !:)
    14·1 answer
  • 20 2/3% to fraction?
    6·1 answer
  • Slope intercept form and standard form
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!