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nekit [7.7K]
3 years ago
13

mr. fernandez wants to put tiles on his kitchen floor. he has 30 tiles. mr. fernandez put down 2 rows with 9 in each row. how ma

ny tiles does mr. fernandez have left?
Mathematics
2 answers:
Zanzabum3 years ago
7 0
He has 12 tiles left.
Natasha2012 [34]3 years ago
3 0
The answer to this problem is 12, because if he had 2 rows of 9 tiles in each it would be 9 plus 9 or ( 9+9 ) So then you would take the number u got ( 18 ) and subtract it from the number of original tiles ( 30 ) getting an answer of 12 :)
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Writing equations in standard form:
d1i1m1o1n [39]
You have already done half of it. Now substitute for x1 = 4 and y = 5
y - 5 = 6/7(x - 4)
Multiply everything by 7 to remove fractions
7y - 35 = 6(x - 4)
7y - 35 = 6x - 24
-6x + 7y = -24 + 35
-6x + 7y = 11

Some people prefer a positive number in front of x so multiply by -1
6x - 7y = -11

You can check the answer by testing it works for both of the original points
6x4 - 7x5 = 24 - 35 = -11 true
6x-3 - 7x-1 = -18 - -7 = -11 true
3 0
2 years ago
A.Calculate the mean,median and mode.(3 points each) 1.)1,2,3,4,5 2.)2,3,4,5,6,6 3.)6,7,5,4,5,6,2,5
zlopas [31]

Answer:

Step-by-step explanation:

1.)1,2,3,4,5

mean=sum of all values/number of values

         =1+2+3+4+5/5

         =15/5

mean=3

Mode :

In the given data, no observation occurs more than once.

Hence the mode of the observations does not exist, means mode=0.

Median

1,2,3,4,5

Middle value is 3 so the median is 3.

2.)2,3,4,5,6,6

mean=sum of all values/number of values

         =2+3+4+5+6+6/6

         =26/6

mean =4.33

Mode

      is that value of the observation which occurs maximum number of times so here mode is 6.

Median

2,3,4,5,6,6

 4+5/2

9/2

median=4.5

3.)6,7,5,4,5,6,2,5

mean=sum of all values/number of values

         =6+7+5+4+5+6+2+5/8

        =40/8

mean =5

Mode

is that value of the observation which occurs maximum number of times so here mode is 5

Median

2,4,5,5,5,6,6,7

5+5/2

10/2

median=5

 

5 0
3 years ago
Multiply the polynomials. (x – 5)(x2 + 4x – 2)
klemol [59]

the cheap answer is simply

(x-5)(x²+4x-2)

we can simply multiply the terms on one by the terms of the other and then add like-terms and simplify.

\bf (x-5)(x^2+4x-2)\implies \begin{array}{cllll} x^2+4x-2\\ \times x\\ \cline{1-1}\\ x^3+4x^2-2x \end{array}+ \begin{array}{cllll} x^2+4x-2\\ \times -5\\ \cline{1-1}\\ -5x^2-20x+10 \end{array} \\\\\\ x^3+4x^2-2x-5x^2-20x+10\implies x^3+4x^2-5x^2-2x-20x+10 \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill x^3-x^2-22x+10~\hfill

6 0
3 years ago
Read 2 more answers
A. 36m^2<br>b. 30m^2<br>c. 18m^2<br>d. 26m^2<br>PLZ HELL MEHHH​
Vesna [10]

Answer:

its really easy just multiply

Step-by-step explanation:

multiply everything together

6 0
3 years ago
Order the given rational numbers from least to greatest:
n200080 [17]

Answer:

-4 1/4

-4 1/4

-3 1/3

-3.3

3

Step-by-step explanation:

6 0
3 years ago
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