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3 years ago

13

54 students want pancakes and 4 students want waffles. What is the ratio of the number of students who want waffles to the numbe

r of students who want pancakes?

1 answer:

dimaraw [331]3 years ago

5 0

Answer:

2:27

Step-by-step explanation:

the original ratio is '4 to 54' but both numbers divide by 2 so the answer is '2 to 27' also known as 2:27

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A jar contains 11 green marbles, 6 red marbles, and 9 blue marbles. A marble is selected at random, not replaced, and then a sec

astraxan [27]

Answer:

33/338

Step-by-step explanation:

Green = 11

Red = 6

Blue = 9

P.Red = 6/26 = 3/13

P.Green = 11/26

P. Both in turns = 3/13 * 11/26

= 33/338

7 0

3 years ago

Suppose the distribution of home sales prices has mean k300, 000 and standard

777dan777 [17]

<u>Given</u>:

Mean,

$\mu = 300,000$

Standard deviation,

$\sigma = 50,000$

The Chebyshev theorem will be used for the solution of the given query,

i.e., $P(|X - \mu| < k \sigma ) \geq 1-\frac{1}{k^2}$

(i)

⇒ $1-\frac{1}{k^2} = 0.75$

$k = 2$

The lower limit will be:

= $\mu - k \sigma$

= $300000-2\times 50000$

= $200000$

The upper limit will be:

= $\mu + k \sigma$

= $300000+2\times 50000$

= $400000$

hence,

The 75% houses sold are between:

⇒ (200000, 400000)

(ii)

⇒ $\mu -k \sigma = Lower \ limit$

By putting the values, we get

$300000-50000k = 150000$

$300000-150000=50000k$

$150000=50000k$

$k=\frac{150000}{50000}$

$=3$

now,

⇒ $1-\frac{1}{k^2} = 1-\frac{1}{3^2}$

$=\frac{8}{9}$

$=0.8888$

$=88.88$ (%)

hence,

88.88% houses sold between 150000 and 450000.

(iii)

⇒ $\mu - k \sigma = Lower \ limit$

By putting the values, we get

$300000-50000k = 170000$

$300000-170000=50000 k$

$130000= 50000 k$

$k = \frac{130000}{50000}$

$=2.6$

now,

⇒ $1-\frac{1}{k^2} = 1-\frac{1}{2.6^2}$

$=0.8521$

$=85.21$ (%)

hence,

85.21% houses are sold between 170000 and 430000.

Learn more:

brainly.com/question/20897803

3 0

3 years ago

What is "the sum of twice a number and six is the same as three subtracted from the number itself"?

inysia [295]

Answer:

x=-1

Step-by-step explanation:

2x+6=3-x

Step 1: Simplify both sides of the equation.

2x+6=3−x

2x+6=3+(−x)

2x+6=−x+3

Step 2: Add x to both sides.

2x+6+x=−x+3+x

3x+6=3

Step 3: Subtract 6 from both sides.

3x+6−6=3−6

3x=−3

Step 4: Divide both sides by 3.

3x/3=−3/3

x=−1

Answer:

x=−1

4 0

3 years ago

What is the Hcf of 24 and 42

vova2212 [387]

Answer:

6

Step-by-step explanation:

3 0

3 years ago

Use the box plot to explain what you know about the spread of this data set.

Lyrx [107]

Answer:

Interquartile Range = 34

Range = 55

Step-by-step explanation:

Max - Min = Range

75 - 20 = 55

Quartile 3 - Quartile 1 = IQR

68 - 34 = 34

5 0

3 years ago