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
Gekata [30.6K]
3 years ago
10

Can someone help me with and and can you please write how you got it so I can understand

Mathematics
2 answers:
EastWind [94]3 years ago
8 0

Answer:

12x + 4

Step-by-step explanation:

ok so a rectangle has 4 sides, 2 of which are called lengths, and 2 of which are widths.

length = 2x-3

width = 4x+5

the perimenter is the total of the 4 sides.

2(2x-3) = 4x-6 (the total for lengths)

2(4x+5) = 8x+10 (the total for widths)

add the 2 together:

12x+4

vekshin13 years ago
3 0

Answer:

<em>2(2x - 3) + 2(4x + 5)=  </em>OR <em>12x + 4</em>

Step-by-step explanation:

First, we need to know the formula of calculating the perimeter

The formula is <em>2(Length) + 2(Width) = Perimeter</em>

The length is <em>2x - 3</em>

The width is <em>4x + 5</em>

Now fill in the known dimensions in the formula

<em>2(2x - 3) + 2(4x + 5)= perimeter</em>

This expression can be used to represent the perimeter of Rectangle ABCD, though (depending on the teacher) it is not simplified.

We remove the brackets by multiplying the number that's outside the brackets by the numbers or figures inside.

hence, <em>4x - 6 + 8x +10 = the perimeter</em>

Note: <u>A negative multiplied by a negative equals a positive. A positive multiplied by a negative and vice versa equals a negative. A positive multiplied by a positive equals a positive.</u>

We can now simplify further by adding <em>like terms.</em> i.e, x + x, and integers + integers.

<em>4x + 8x - 6 + 10 = the perimeter</em>

<em>12x + 4 = the perimeter</em>

The perimeter can be represented by the expression, <em>12x + 4</em>

<em>Or (depending on the teacher,) </em><em>2(2x - 3) + 2(4x + 5)= </em>

You might be interested in
There are 18 girls in mr. Brimley’s math class. If 60% of the students are girls, how many students are in mr. brimley’s math cl
m_a_m_a [10]

Answer:

30

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
What is the supplement to an angle that measures 58 degrees? <br>a) 180<br>b)122<br>c)132<br>d)58​
skelet666 [1.2K]

Answer:122

Step-by-step explanation:

Supplementary just means two angles sum to 180.

3 0
3 years ago
Read 2 more answers
If lin runs 21 laps at the same rate, how long does it take her 25.6 minutes How many laps per minute is that? __ laps
Alex Ar [27]

Answer: 0.82 laps per minute

Step-by-step explanation:

Lin is running 21 laps in 25.6 minutes.

To find out her speed in laps per minute, divide the distance she has ran by the time it took her to run it.

= Distance / time

= 21 / 25.6

= 0.82 laps per minute

6 0
3 years ago
A student is given three triangles and must determine which triangles are
UNO [17]

Answer:

the answer is B, because triangle BCA is a rotation of triangle XYZ.

Step-by-step explanation:

3 0
3 years ago
Viola has a part time job in which she is paid an hourly basis for every hour up through 40 hours. For each hour after 40 hours,
blondinia [14]

Answer:

15.5

Step-by-step explanation:

for every hour we can say that the wage is x

hence we can create an equation:

40x + 160%*x = 644.80

now solve for x

40x + 1.6x = 644.8

41.6x = 644.8

x = 15.5

hourly wage is 15.5

3 0
3 years ago
Read 2 more answers
Other questions:
  • How much interest is earned on an investment of $12,000 at 2.9% compounded daily for eight years
    14·1 answer
  • I need help understanding it
    6·1 answer
  • Which is the graph of y ≤ 1 – 3x?
    7·1 answer
  • Py+7=6y+qp, y, plus, 7, equals, 6, y, plus, q y=y=y, equals
    12·2 answers
  • A vine called the mile-a-minute weed is known for growing at a very fast rate. It can grow up to 0.5 ft per day. How fast in inc
    10·2 answers
  • How to do this step by step
    8·2 answers
  • A student is asked to find the length of the hypotenuse of a right triangle. The length of one leg is 38 ​centimeters, and the l
    12·1 answer
  • In a class of 25 students, 15 of them have a cat,
    7·1 answer
  • The tree diagram shows Leila's choices for dinner at a restaurant. How many possible dinner combinations exist?
    14·1 answer
  • NEED NOW PLEASE.......
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!