A) n-20
b.)30=1/2n+1/2
c.)2/3n=30
d.)5n=90
e.)M•3+4=49
The answer is C
5/12= 0.4167
the product is 2.9
5/12< 2.9 <7
361 congruent square tiles would be needed to cover the square shaped floor.
<h3>Equation</h3>
An equation is an expression that shows the relationship between two or more variables and numbers.
Since the number of tiles lying on both diagonals is 37. Let x represent the number of tiles on each side.
Counting one tile twice, there are:
- 37=2x-1
- x=19 tiles on each side.
19² = 361
361 congruent square tiles would be needed to cover the square shaped floor.
Find out more on Equation at: brainly.com/question/2972832
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0.4 is the tenth in there.
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Answer:
15
Step-by-step explanation:
2 1/2 = 5/2 = 15/6
