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Alexus [3.1K]
1 year ago
8

A recent study of 50 U.S. chess players details such things as the number of years the players have been active and the chess ra

tings of the 50 players. (A chess rating is a number, with a higher number indicating greater expertise.) The chess rating data for the sample of 50 players are summarized in the following histogram.
Mathematics
1 answer:
Anvisha [2.4K]1 year ago
5 0

Using the given histogram, we have that 90% of the players in the sample have scores that are less than 2300.

<h3>What is the missing information?</h3>

This problem is incomplete, but researching it on a search engine, we have that the histogram states as follows:

  • 6 of these players have scores between 300 and 700.
  • 6 of these players have scores between 700 and 1100.
  • 13 of these players have scores between 1100 and 1500.
  • 14 of these players have scores between 1500 and 1900.
  • 6 of these players have scores between 1900 and 1300.
  • 5 of these players have scores between 2300 and 2700.

It asks the proportion of players in the sample with <u>scores that are less than 2300</u>.

<h3>What is an histogram?</h3>

An histogram is a graph that shows the <u>number of times each element of x was observed.</u>

Above, we already gave the amounts presented by histogram, and we have that 45 out of 50 players have <u>scores that are less than 2300</u>, hence the proportion is given by:

p = 45/50 = 0.9.

More can be learned about histograms at brainly.com/question/25836450

#SPJ1

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Can anyone help me with this?
-Dominant- [34]
A=60
B=52
C=152
I’ve attached my work on how I got these answers
Hope this helps!

7 0
2 years ago
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The greatest factor that two or more numbers have in common is the
trapecia [35]

Answer:

 "greatest common factor" (GCF) or "greatest common divisor" (GCD)

Step-by-step explanation:

Apparently, you're looking for the term that has the given definition. It is called the GCF or GCD, the "greatest common factor" or the "greatest common divisor."

_____

The GCF or GCD can be found a couple of ways. One way is to find the prime factors of the numbers involved, then identify the lowest power of each of the unique prime factors that are common to all numbers. The product of those numbers is the GCF.

<u>Example</u>:

  GCF(6, 9)

can be found from the prime factors:

  • 6 = 2·3
  • 9 = 3²

The unique factors are 2 and 3. Only the factor 3 is common to both numbers, and its lowest power is 1. Thus ...

  GCF(6, 9) = 3¹ = 3

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Another way to find the GCD is to use Euclid's Algorithm. At each step of the algorithm, the largest number modulo the smallest number is found. If that is not zero, the largest number is replaced by the result, and the process repeated. If the result is zero, the smallest number is the GCD.

  GCD(6, 9) = 9 mod 6 = 3 . . . . . (6 mod 3 = 0, so 3 is the GCD)

8 0
3 years ago
Michael is in debt $45 dollars. He takes another loan out for $95.45. How much money is Michael in debt?
Anton [14]
Answer: 140.45

reasoning: 95.45 + 45

5 0
3 years ago
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A baby giraffe was born at a wildlife preserve. The giraffe was 6 feet tall when it was born, and it grew 1.75 feet over the nex
HACTEHA [7]

The age of the giraffe when he is 15 feet tall be 1 year 1 month and  16 days.

<h3>What is fraction?</h3>

A fraction can be a portion or section of any quantity out of a whole, where the whole can be any number, a specific value, or a thing.

Giraffe height = 6 feet

Height grew in 7 months= 1.75 feet

Giraffe's height in 7 month = 7.75 feet

Giraffe's height, 1 feet= \frac{7}{7.75} month

                                   = 0.9032 months

Giraffe's height, 15 feet=  0.9032 x 15 month

                                    = 13.548 month

                                    = 13 months 16 days approx.

                                    = 1 year 1 month 16 days

Hence, the age of giraffe will be 1 year, 1 month and 16 days

Learn more fraction here:

brainly.com/question/10354322

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5 0
2 years ago
Someone please help me out with these questions . I don’t get them at all.
iVinArrow [24]

Answer:

a)similar; b)similar; c)similar; d)NOT similar

Step-by-step explanation:

>In general if

all corresponding angels are ≅, and

all corresponding sides are in proportion

then the Δs are similar

>we have 3 similarity theorems AA, SSS, and SAS

a)

we can use that sum of angles in a triangle is 180 to find the missing angles

180-96-32 = 52

so in the smaller triangle the angles are 96°-52°-32°

in the larger triangle the angles given are 52°-32°

Since there are 2 corresponding angles congruent, AA theorem of similarity says that the 2 triangles are similar. The transformations were that the big triangle was shrunk and rotated

b)

here we are given a pair of congruent angles and we need to check if the sides are in proportion, is 14/44.8 equal to 20/64?

14/44.8 =.3125 is equal to 20/64=.3125

since we have two corresponding sides in proportion and the angles in between them congruent the SAS theorem says that the 2 triangles are similar. The transformation was that the small triangle was dilated.

c)

because we are given the 2 angles are congruent we can conclude that the lines NH and SL are parallel. NH║SL let us conclude that ∡H and ∡ L are congruent because 2 parallel lines cut by a transversal (ML in our case) form congruent angles. So ΔMNH  is similar to ΔMSL because of AA theorem of similarity (one pair of A was given congruent, one other pair of A we concluded was congruent)

d)

here we have to check if all the sides are in proportion to see if SSS theorem of similarity applies here

18/90 = .2

44/202.4≈.22

58.5/211.2≈.28

.2≠ .22 ≠ .28

since the sides are not in proportion the 2 triangles are NOT similar.

4 0
3 years ago
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