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Lana71 [14]
3 years ago
9

A non toxic furniture polish can be made by combining vinegar and oil. The amount of oil should be five times the amount of vine

gar. How much of each ingredient is needed in order to make 27 oz of furniture polish?
Mathematics
1 answer:
julsineya [31]3 years ago
4 0

There should be 4.5 oz of vinegar and 22.5 oz of oil

-5x+y=0

x+y=27

-6x=-27

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Select all the correct answers.
irina1246 [14]

Operations that can be applied to a matrix in the process of Gauss Jordan elimination are :

replacing the row with twice that row

replacing a row with the sum of that row and another row

swapping rows

Step-by-step explanation:

Gauss-Jordan Elimination is a matrix based way used to solve linear equations or to find inverse of a matrix.

The elimentary row(or column) operations that can be used are:

1. Swap any two rows(or colums)

2. Add or subtract scalar multiple of one row(column) to another row(column)

as is done in replacing a row with sum of that row and another row.

3. Multiply any row (or column) entirely by a non zero scalar as is done in replacing the row with twice the row, here scalar used = 2

6 0
3 years ago
You went to a bake sale and bought a whole bunch of
MakcuM [25]

Answer:

If cookies are for $1 and brownies are for $2, let number of cookies = x and number of brownies = y

∴ $1*(x*1) + $2*(y*1) = $13

Step-by-step explanation:

1) You can buy 4 brownies for $2 each = 2*4 = $8

The rest you can buy cookies = 5 cookies = $5

$8+$5=$13

2) You can buy 5 brownies and 3 cookies = $10+$3 = $13

3) You can buy 3 brownies and 7 cookies = $6+$7=$13

Equation: -

If cookies are for $1 and brownies are for $2, let number of cookies = x and number of brownies = y

∴ $1*(x*1) + $2*(y*1) = $13

7 0
3 years ago
Which of these pairs of events are dependent?
tangare [24]

Answer:

d

Step-by-step explanation:

a, b, and c are independent, because they don't necessarily affect the probability of each other.

8 0
3 years ago
The five-number summary suggests that about 75% of salons in Janesville have fewer than how many stylists employed?
Archy [21]

The 5 - number summary :

Min____ Q1 ___ median ____ Q3 ____ max

7 ______ 9 _____ 12 _______ 15 _____ 18

Answer:

Hence, from the 5 number summary, about 75% of sons have fewer than 15 stylist.

Step-by-step explanation:

Explaining the table :

Minimum number of stylist salons have = 7

Maximum number of stylist = 18

Q1 = first quartile, (25 /100) ;About 25% of salons have fewer Than 9 stylist

Q2 = second quartile or median ; About 50% of salons have fewer Than 12 stylist

Q3 gives the 75th percentile value.

Q3 = third quartile (75/100) ; About 75% of salons have fewer Than 15 stylist

6 0
3 years ago
How do I do this problem? I have no idea . Thanks
Ostrovityanka [42]

Answer:

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