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
oksian1 [2.3K]
3 years ago
8

Giving brainliest, please answer as soon as possible.

Mathematics
1 answer:
Serjik [45]3 years ago
4 0

Answer:

Step-by-step explanation:

There are five lines of symmetry in a regular pentagon:

Each going from side midpoint to opposite vertex.

here is a drawing of all of them filled in:

You might be interested in
Round to the nearest hundredth 2.815
LenaWriter [7]
2.82 is the answer, ...
8 0
3 years ago
Wich compound inequality is graphed below?
Ludmilka [50]

Answer:

the third one: -15 <= 4x-3 < 5

4 0
3 years ago
Statistics can help decide the authorship of literary works. Sonnets by a certain Elizabethan poet are known to contain an avera
slega [8]

Complete question is;

Statistics can help decide the authorship of literary works. Sonnets by a certain Elizabethan poet are known to contain an average of 8.88 new words (words not used in the poet's other works). The standard deviation of the number of new words is 3. Now a manuscript with 6 new sonnets has come to light, and scholars are debating whether it is the poet's work. The new sonnets contain an average of 12.4 words not used in the poet's known works. We expect poems by another author to contain more new words, so to see if we have evidence that the new sonnets are not by our poet we test the following hypotheses.

H0 : µ = 8.88 vs Ha : µ > 8.88

Give the z test statistic and its P-value. What do you conclude about the authorship of the new poems? (Let a = .05.)

Use 2 decimal places for the z-score and 4 for the p-value.

a.What is z ?

b.The p-value is greater than ?

c. What is the conclusion? A)The sonnets were written by another poet or b) There is not enough evidence to reject the null.

Answer:

a) z = 2.87

b) P-value ≈ 0.0021

c) The sonnets were written by another poet

Step-by-step explanation:

We are given the hypothesis as;

Null hypothesis; H0 : µ = 8.88

Alternative hypothesis; Ha : µ > 8.88

We are also given;

Sample size; n = 6

Population Standard deviation; σ = 3

Sample mean; x¯ = 12.4

a) formula for z - value is;

z = (x¯ - µ)/(σ/√n)

z = (12.4 - 8.88)/(3/√6)

z = 2.87

b) we are given the significance value as α = 0.05.

From online p-value from z-score calculator attached and using z = 2.87; one tail distribution; α = 0.05, we have;

P-value = 0.002052

Approximating to 4 decimal places;

P-value ≈ 0.0021

c) The p-value is less than the significance level, thus we react the null hypothesis and conclude that the sonnets were written by another poet

5 0
3 years ago
What is the answer to this problem?
GuDViN [60]
The equation for this table is y = x - 4
3 0
3 years ago
Read 2 more answers
What quadratic expression represents (2x+5)(7-4x)
den301095 [7]

<h2><u>Answer</u><u> </u>:)</h2>

  • \sf{(2x+5)(7-4x)   }

  • \sf{2x(7-4x)+5(7-4x)   }

  • \sf{14x-8x^{2}+35-20x   }

  • \sf{ -8x^{2}-6x+35  }

\\\\\\

<u>Therefore</u><u> </u>

  • \sf{Option~ D ~is ~correct    }

\sf{   }

\sf{   }

\sf{   }

\sf{   } \sf{   } \sf{   } \sf{   } \sf{   }

6 0
3 years ago
Read 2 more answers
Other questions:
  • The value of an autographed baseball from 2017 is $300. The value of the baseball exponentially increases by 5% each year after
    5·1 answer
  • Help me with these problem ss
    12·1 answer
  • Prove by mathematical induction.<br> 2n&lt;(n+2)!, for n ≥ 0, where n ∈ ℤ
    14·1 answer
  • What is the complete factorization of 2x2 − 11x − 21?
    9·1 answer
  • The length of the side of the cube is 5x units, what is the volume of the cube?
    14·1 answer
  • You want to buy a pet rabbit that costs ​$49. You already have ​$18 and you plan to save ​$9 per week. If w represents the numbe
    12·1 answer
  • A square carpet of side length 9 feet is designed with one large shaded square and eight smaller, congruent shaded squares, as s
    5·1 answer
  • Write the Reciprocal of 2 and 3/4
    7·1 answer
  • Quick does anyone know this please give me the right answer ( this is due in 20 minutes)
    15·2 answers
  • A cab charges a $4 initial fee and then $2.50 per mile. If the cab driver charged you $15.25, how many miles, m, did you travel?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!