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2 years ago

Express 9 as a ratio of 27

Mathematics

2 answers:

ANTONII [103]2 years ago

7 0

Answer:

9/27 or 9 to 27

Step-by-step explanation:

Natali5045456 [20]2 years ago

7 0

9/3 should be ratio

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Dalton is playing a game in which the object is to obtain a 0 by adding the points scored during each round

Katen [24]

The answer to this question is 52

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2 years ago

True or False: A race car driver tested his car for time from 0 to 60 mph, and in 20 tests obtained an average of 4.85 seconds w

vredina [299]

Answer:

False

Step-by-step explanation:

given that a race car driver tested his car for time from 0 to 60 mph, and in 20 tests obtained an average of 4.85 seconds with a standard deviation of 1.47 seconds.

Sample size n = 20

since population standard deviation is not known, we can use t critical value for finding out the confidence interval

df=19

t critical = 2.045

Margin of error = $2.045*\frac{s}{\sqrt{n} } \\=2.045*\frac{1.47}{\sqrt{20} } \\=0.6722$

conidence interval = Mean±Margin of error

= $(4.85-0.6722, 4.85+0.6722)\\= (4.1778, 5.5222)$

The given confidence interval is (4.52, 5.18)

Hence the statement is false.

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3 years ago

Bruno is a manager at a factory that makes in-line skates. The

SashulF [63]

Answer:

Slope- intercept form y = 200 x + 500

Step-by-step explanation:

Given that the equation

200x - y + 500 = 0

where y, the number of pairs of skates the factory has in the warehouse, and x be the number of hours

The slope-intercept form

y = m x +C

Given equation 200x - y + 500 = 0

200 x + 500 =y

y = 200 x + 500

Slope of the equation m = 200 and y-intercept 'C' = 500

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2 years ago

Pls help w this math problem

AlladinOne [14]

Answer:

slope= 5x

Step-by-step explanation:

hope this helps :)

7 0

2 years ago

A store is selling a mixture of apple granola and blueberry granola for $6.99 per pound. Blueberry granola costs $8.99 per pound

Alik [6]

Answer:the number of pounds of blueberry granola that she should put in the mixture is 10 pounds.

the number of pounds of apple granola that she should put in the mixture is 20 pounds

Step-by-step explanation:

Let x represent the number of pounds of blueberry granola that she should put in the mixture.

Let y represent the number of pounds of apple granola that she should put in the mixture.

She wants to make a 30 pounds mixture. This means that

x + y = 30

A store is selling a mixture of apple granola and blueberry granola for $6.99 per pound. This means that the cost of the 30 pound mixture would be

30 × 6.99 = $209.7

Blueberry granola costs $8.99 per pound and apple granola costs $5.99. This means that

8.99x + 5.99y = 209.7 - - - - - - - - - -1

Substituting x = 30 - y into equation 1, it becomes

8.99(30 - y) + 5.99y = 209.7

269.7 - 8.99y + 5.99y = 209.7

- 8.99y + 5.99y = 209.7 - 269.7

- 3y = - 60

y = - 60/ -3

y = 20

Substituting y = 20 into x = 30 - y, it becomes

x = 30 - 20 = 10 pounds

7 0

2 years ago

Express 9 as a ratio of 27​

Express 9 as a ratio of 27