Maggie lives on a street with 10 houses. The houses are numbered 1 to 10. If Maggie adds up all the house numbers that are lower than hers, the total is three times her actual house number. What number is Maggie’s house?

7

Step-by-step explanation:

1+2+3+4+5+6=21

21÷3=7

Her house number would be 7.

Step-by-step explanation:

If you add up all the houses previous to house number 7 the sum would be 21 which is three times her house number.

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.

answer: the answer is one

step-by-step explanation:

pemdas, in this situation there is no parenthesis or exponents so you go to multiplication, 1x1=1, then division 1/1= 1 then addition 1+1=2 then subtraction 2-1=1