A. 36 is the correct answer
If Sally paints one room per six hours, she paints 1/6 of the room every hour. Similarly, Steve paints 1/9 of the room every hour. Therefore, together, they paint 1/6+1/9=5/18 of the room every hour. Therefore, it takes the 18/5 of an hour to paint the whole room, since 18/5*5/18=1, so 18/5 of an hour at 5/18 of the room per hour is one room.
Answer:
13
Step-by-step explanation:
3(-2)^2-2(-1)
3(4)+2
12+1
13
Answer:
60 and 35
Step-by-step explanation:
Let:
First number = x
Second number = y [ y > x ]
According to question:
x + y = 95
= > y = 95 - x .... ( i )
y = x + 25 ...... ( ii )
From ( i ) and ( ii ) we get:
95 - x = x + 25
= > 2x = 70
= > x = 35
y = 95 - x [ x = 35 ]
= > y = 60
Therefore numbers are 60 and 35.
914 070 in two significant figures will be rounded off to: 910,000.
<h3>How to Rounding Up a Number to 2 Significant Figure</h3>
- Significant figures are non-zero digits or digits before a decimal.
- To round up to 2 significant figure, if the digit we are rounding off is more than 5, we round up, if it is less than 5, we round down.
Thus, given 914 070.
The digit, 4, is less than 5, therefore, we will round down.
Therefore, 914 070 in two significant figures will be rounded off to: 910,000.
Learn more about significant figures on:
brainly.com/question/15027067