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
Natasha_Volkova [10]
2 years ago
13

the length of a rectangle is represented by 3x-7 and the width by x+4. express the perimeter as a polynomial in simplest form

Mathematics
1 answer:
ahrayia [7]2 years ago
8 0

Answer: 8x - 6

Step-by-step explanation:

Perimeter is found by doing 2l + 2w

The length is 3x - 7 and width is x + 4

2(3x - 7) + 2(x + 4) =

6x - 14 + 2x + 8 =

8x - 6

You might be interested in
Without calculating, which has a bigger volume. A cube that has a length, width, and height of 18 m. Or a sphere with a radius o
Evgesh-ka [11]

Weird. A period appears above this... huh.

Answer:

[Th]e cube has a greater value.

Step-by-step explanation:

What the word problem really wants us to get [is ]the question of 'Which is greater, A=6a^2 when 'a' [is] 18 or A=4\pir^2 when r = 9? And here's how to solve that.

Starting with the[ c]ube we have A=6a^2. A bit t[o]o simple, right?

A=6(18)^2 Substitute numbers.

A=6(324) Solve ex[p]onents.

A=1944 Mult[i]ply.

So w[e] know that the cube is 1944 meters cube[d ] in area. But what about the more [f]ormidable sphere? Fo[r] it we need a slightly m[o]re co[m]plicated formula, A=4\pir^2. However, instead of using the real pi I will be rounding to 3.14, since we have no calculator so anything more would take way too long and fry your[ bra]in.

A=4(3.14)(9)^2 Subst[i]tute numbers.

A=4(3.14)(81) Solve expone[n]ts.

A=12.56(81) Multip[ly].

A=1017.36 Multiply again[.]

Now, since I'm sure all of us can count, we know that 1944 is greater than 1017.36. Or in other words, the cube is bigger than the sphere.

And PLEASE don't copy this guys. Make your own iteration. Change it up!

3 0
3 years ago
Solve:<br><br> r<br> 5<br> - 6 = -1
Leona [35]
That's right, 5- 6= -1
3 0
3 years ago
Read 2 more answers
Suppose 12% of students are veterans. From a sample of 263 students, how unusual would it be to have less than 22 veterans?
kkurt [141]

Answer:

Yes, both np and n(1-p) are ≥ 10

Mean = 0.12 ; Standard deviation = 0.02004

Yes. There is a less than 5% chance of this happening by random variation. 0.034839

Step-by-step explanation:

Given that :

p = 12% = 0.12 ;

Sample size, n = 263

np = 263 * 0.12 = 31.56

n(1 - p) = 263(1 - 0.12) = 263 * 0.88 = 231.44

According to the central limit theorem, distribution of sample proportion approximately follow normal distribution with mean of p = 0.12 and standard deviation sqrt(p*(1 - p)/n) = sqrt (0.12 *0.88)/n = sqrt(0.0004015) = 0.02004

Z = (x - mean) / standard deviation

x = 22 / 263 = 0.08365

Z = (0.08365 - 0.12) / 0.02004

Z = −1.813872

Z = - 1.814

P(Z < −1.814) = 0.034839 (Z probability calculator)

Yes, it is unusual

0.034 < 0.05 (Hence, There is a less than 5% chance of this happening by random variation.

7 0
2 years ago
The average score of all golfers for a particular course has a mean of 65 and a standard deviation of 4.5 . Suppose 81 golfers p
Natali5045456 [20]

Answer:

Answer:

The probability that the average score of the 49 golfers exceeded 62 is 0.3897

Step-by-step explanation:

6 0
3 years ago
What is the Integers in this Picture?
Vadim26 [7]

Answer:

1. Integer

2. Not an integer

3. Not an integer

4. Not an integer

5. Not an integer

Step-by-step explanation:

Integer - A whole number

So just search the list for whole numbers. If it is not a whole number, it is not an integer.

8 0
3 years ago
Read 2 more answers
Other questions:
  • A whole number is squared. the result was 16. what was the original number
    12·2 answers
  • If u were me which homework would you do first?Aka FF.4 is math.And teenbiz is Ela.
    9·1 answer
  • In the school library, 28% of the books are non-fiction. If there are 1,224 fiction books in the library, what is the total numb
    5·1 answer
  • Help help help help help
    7·1 answer
  • The surface area of this cube is 6 square centimeters. What is the value of c?
    14·1 answer
  • Kathy measured her finger using a ruler with centimeters. Then she measured the same finger with a ruler using millimeters. Can
    7·1 answer
  • 5x + 8 = 43 <br> What is x
    8·2 answers
  • Brittany had already read 13 books this year before joining a book club, and she plans to read 4 books every month now that she
    7·1 answer
  • In △UVW,△UVW, VW≅UV and m∠U=71∘.Find m∠W. <br> please help will mark brainliest
    15·1 answer
  • Easy math for smart people problem: 7w-6=3(w+6)
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!