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Blizzard [7]
3 years ago
7

A school janitor has mopped

Mathematics
2 answers:
Tatiana [17]3 years ago
3 0
1/3 of the classroom is mopped in five minutes, so the whole classroom (or one classroom) is mopped in 15 minutes
Naya [18.7K]2 years ago
3 0

Answer:

0.06 of the floor mopped per minute

Step-by-step explanation:

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Solve each system by substitution. please help me<br> 2x{+y=6<br> x{+y=3
saw5 [17]
1. x= 3/Y as a fraction btw

2. Same thing
6 0
3 years ago
Linda is twice the age of Vera.
Paladinen [302]

Answer:

Tanya is 20 years old

Step-by-step explanation:

Let the age of Vera = x years

The age of Linda is twice the age of Vera = 2x years

Tanya  is four less than four times the age of Linda = 4(2x)-4 = 8x-4

Total age of Vera, Linda and Tanya is:

x+2x+8x-4

Combine the like terms:

11x-4

But now their total age is two more than nine times the age of Vera:

11x-4 = 9x+2

Solve the expression

Combine the like terms:

11x-9x=2+4

2x=6

Divide both the sides by 2

2x/2 = 6/2

x= 3

Thus the age of Vera is 3 years.

The age of Linda is 2x= 2*3 = 6 years

The age of Tanya is 8x-4 = 8*3 - 4 = 24-4 = 20years....

7 0
2 years ago
Ten tiles numbered 1 through 10 are turned face down. One tile is turned up at random, and a die is rolled and the number is squ
attashe74 [19]

Answer:

18.33333333%. Please mark as brainliest if I’m Correct. :)

Step-by-step explanation:

5 0
2 years ago
You have a combination lock with 3 secret digits. Find the 3 correct digits using the following clues and enter your answer belo
zalisa [80]

Answer:

184

Step-by-step explanation:

in the number 128 the number eight is right it should be to the right then in the number157 one is right it should be to the left in 841 8and 1 are in the wrong position 8 - right 1 - left then in the number 624 the number 4 is right but in the wrong position it should be in the middle the answer is digit 1,8,4

3 0
2 years ago
Help me if you'd like​
astraxan [27]

Answer:

C

Step-by-step explanation:

3 5/9 is the equavilent to 3.5555555556

This decimal is closet to C because you'd have to round up to make the decimal only in the tenths place

Hope it helps! Good luck!

5 0
3 years ago
Read 2 more answers
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