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
nikklg [1K]
3 years ago
10

20 m 21 m What is the perimeter? meters

Mathematics
2 answers:
vladimir1956 [14]3 years ago
8 0

Answer:

82 meters

Step-by-step explanation:

to get the perimeter of a rectangle or square you have to add the lengths of all the four sides

P=20+20+21+21

P=2x20+2x21

P=2x(20+21)

P=2x41

P=82

AnnZ [28]3 years ago
4 0

Answer: 20+21+20+21=40+42=82

Step-by-step explanation:

Add up the sides

Multiply by 2

Try:

20+21=41

Multiply by 2:82

You might be interested in
Simplify each expression:
zaharov [31]
1. 11x
2. 45x
3. 16x+8y
4. y = -3x/5
3 0
3 years ago
There are 4 more boys than girls in a
horsena [70]

Answer:

There are 10 boys and 6 girls in the class

Step-by-step explanation:

The given parameters are;

The number of boys = The number of girls + 4

The number of students in the class = 16

Let x represent the number of girls in the class and let y represent the number of boys in the class

Therefore;

y = x + 4...(1)

x + y = 16...(2)

Making y the subject of equation (2) gives;

y = 16 - x

Equating the values of y from equation (1) and equation (2) gives;

x + 4 = 16 - x

Which gives;

2·x = 16 - 4 = 12

x = 12/2 = 6

x = 6

The number of girls = x = 6

From equation (1), we have;

y = x + 4 = 6 + 4 = 10

y = 10

The number of boys = y = 10.

3 0
3 years ago
PLZ HELP BRAINLIEST!!
kogti [31]

Answer:The accompanying table shows the number of trials and the ... Write the exponential regression equation for this set of data, rounding all values to no decimal places. Using this equation, find the value of her stock, to the nearest dollar, 10 years ... culture over a 5-hour period, where x is the time, in hours, and y is the number.

mark me brinlest plzz

Step-by-step explanation:

7 0
3 years ago
Help plsss need this for tomorrow
Margaret [11]
Hello there! I can help you! So there is one blue counter added to two green counters. To solve this problem, we can write and solve an equation. Set it up like this:

12 + 1x = 8 + 2x

We do this, because there are already some of each color in the bag. 1x makes one counter each and 2x is two counters for every blue counter in the bag. Let's solve it. Subtract 1x from each side. 1x - 1x cancels out. 2x - 1x is 1x or just simply x. That simplifies to 12 = 8 + x. Subtract 8 from each side to get the variable by itself. 8 - 8 cancels out. 12 - 8 is 4. That leaves 4 = x. Nothing else needs to be done. Let's plug the value in and see if it works. 1 * 4 is 4. 12 + 4 is 16. 2 * 4 is 8. 8 + 8 is 16. 16 = 16. There. x = 4. 4 blue counters and 8 green counters were added to the bag.
4 0
3 years ago
Solve it please <br> 5 + x = 3(x - 7) + 6
alina1380 [7]

Answer:

x=10

Step-by-step explanation:

x+ 5= 3x - 21 +6

x+5 = 3x - 15

20= 2x

4 0
3 years ago
Read 2 more answers
Other questions:
  • What number should be added to both sides of the equation to complete the square?<br> x2 + 8x = 4
    14·2 answers
  • Is a teacher divided her students so that there are 11 students per group a unit rate?
    7·1 answer
  • The heights of the trees in a forest are normally distributed, with a mean of 25 meters and a standard deviation of 6 meters. Wh
    11·2 answers
  • Two numbers are in the ratio 17:13. If their H.C.F. is 15. What are the numbers ?
    9·1 answer
  • T is at least 8 and at most 24.
    12·1 answer
  • Please Order -3.5 ℉ 5 ℉ 1.5 ℉ -0.5 ℉ -2℉, 2.5℉ -4 ℉ from least to greatest
    14·1 answer
  • Solve 8 = x2 + 8x + 25 by completing the square.
    8·2 answers
  • Please I need help. I dont understand this. its past due! ​
    11·1 answer
  • A group of 340 students travels by bus. Each bus holds 52 students. a How many buses do they need? ​
    8·1 answer
  • Sophie Ruth is eating a 50-gram chocolate bar that contains 30%percent cocoa.
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!