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
Inga [223]
3 years ago
9

O comprimento de um retângulo é 6x e sua largura é 5y. A) Escreva uma expressão algébrica que representa o perímetro desse retân

gulo. B) Se x = 4 cm e y = 7 cm, qual é o valor numérico desse perímetro.
Mathematics
1 answer:
Kobotan [32]3 years ago
7 0

Answer:

A) 12x + 10y

B) 118cm

Step-by-step explanation:

A) A fórmula para calcular o perímetro de um retângulo é dada como:

Perímetro de um retângulo = 2 (L + W)

= 2L + 2W

Onde

L = comprimento do retângulo

W = largura do retângulo

A) A pergunta nos diz que:

O comprimento de um retângulo é 6x e sua largura é 5y.

A expressão algébrica que representa o perímetro do retângulo =

Perímetro de um retângulo = 2 (L + W)

= 2L + 2W

L = 6x, W = 5y

= 2 (6x) + 2 (5y)

= 12x + 10y

A expressão algébrica que representa o perímetro do retângulo é

P = 12x + 10y

B) Se x = 4 cm e y = 7 cm, qual é o valor numérico desse perímetro.

P = 12x + 10y

x = 4cm

y = 7cm

Perímetro = 12 (4) + 10 (7)

Perímetro = 48cm + 70cm

Perímetro do retângulo = 118cm

Portanto, o valor numérico do perímetro é 118cm

You might be interested in
15+(12+8a) simplify and justify each step
ki77a [65]
1. distribute a 1 to the 12 and 8a
2. you'll get 15+ 12 +8a
3. add the like terms(15 and 12)
4. your final answer will be 27+8a
5 0
3 years ago
Read 2 more answers
5/6 + (-1/2)value of sum
bulgar [2K]

Answer:

it's 1/3

Step-by-step explanation:

5/6+(-1/2)

5/6-1/2

LCM= 6

(5-3)/6

2/6

1/3

8 0
3 years ago
Help anyone I’ll appreciate it thank you
Tomtit [17]

Answer:

150

Step-by-step explanation:

the total angle of a flat line is 180

since one side is 30 180-30 is 150

4 0
3 years ago
Two athletic teams play a series of games; the first team to win 4 games is declared the overall winner. Suppose that one of the
kodGreya [7K]

Answer:

  • p=0.7103 (4-game series)
  • p=0.6480 (2-game series)

Step-by-step explanation:

Let X be the random variable equal the the first 4 straight wins. An overall win for the stronger team implies a negative binomial function with the parameters  n=4, p=0.6:

P(X=4)={{i-1}\choose {4-1}}0.6^40.4^{i-4},\  i=4,5,6,7

#We find probabilities for the different values of i:

P(X=4)={3\choose 3}0.6^4=0.1296\\\\P(X=5)={4\choose 3}0.6^40.4^1=0.2074\\\\P(X=6)={5\choose 3}0.6^40.4^2=0.2074\\\\P(X=4)={6\choose 3}0.6^40.4^3=0.1659

Hence, probability of the stronger team winning overall is:

=P(X=4)+P(X=5)+P(X=6)+P(X=7)\\\\=0.7103

#Define Y as the random variable for winning 2/3 games.:

P(Y=2)={1\choose 1}0.6^2=0.3600\\\\P(Y=3)={2\choose3}0.6^20.4=0.2880\\\\P(win)=0.2880+0.3600=0.6480

Hence, probability of the stronger team winning in 2 out 3 game series is 0.6480

The stronger team has a higher chance of winning in a 4-game series(0.7103>0.6480)

8 0
3 years ago
Frank works in the supply room of a law firm. At the beginning of the month, he had 22 boxes of pens with 19 pens in each box. A
Gennadij [26K]

Answer:

Find the total pens to start with by multiplying the number of boxes by the number of pens in each box:

22 x 19 = 418.

Now subtract the number of pens left:

418 - 71 = 347

He gave out 347 pens.

4 0
3 years ago
Other questions:
  • There are only a few roller coasters in the world whose path takes them underground. Suppose a portion of the roller coaster can
    14·1 answer
  • PLEASE HELP ASAP! URGENT!
    5·1 answer
  • Please help ASAP! will give brainlist.
    9·1 answer
  • Find the mean of this data set: 8,8,3,4,8,6,4,3
    7·2 answers
  • A high school soccer team can have no more than 26 players equality to determine how many more players can the team have if the
    15·1 answer
  • If a number has an infinite amount of 0's on the end of it, can I shorten it to just one 0?
    6·1 answer
  • Use the distributive property to show why p + 0.06 = 1.06p.
    11·1 answer
  • *the answer has to be a fraction* Thank you if u answer! will give brainliest ​
    5·1 answer
  • -2x-3y=-16; 5x+9y=40
    7·1 answer
  • PLEASE HELP ITS URGENT ITS DUE IN 5 MIN PLEASE HURRY THANK YOU IM FAILING CURRENTLY TRYING TI GET A A
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!