You can solve this one by adding their rates, but you have to invert the numbers they give you to find the rate. Rate is measured in something per unit of time, and "per" indicates division. So the rates are: 1/3 of an hour (Sally) and 1/6 of an hour (Steve). So add the rates: 1/3 + 1/6 = 1/2. (1/3 is 2/6, and 2/6 + 1/6 = 3/6). Since their combined rate is 1/2 of a room in one hour, it takes them two hours to paint the room.
This answer makes sense: It takes Sally three hours by herself; with Steve's help, she's faster, but not THAT much faster, because he's pretty slow. You can often spot-check word problem answers like this by giving it a common sense once-over. If we came up with four hours, that would clearly be wrong: it should take her LONGER if she's getting help.
Answer:
The answer is<em> 4.</em>
Step-by-step explanation:
Olives garden has area= 
Each watermelon plants she want to grow require an area= 
Hence, the number of watermelon plants she can grow in that garden is given by:
Number of watermelon plants she can grow= (Total area)/( Area 1 watermelon plant requires)
Hence, Number of watermelon plants she can grow= 
Hence, she can grow 4 watermelon plants in Olives garden.
The general form for this parabola ix x^2 = 4ay where the focus is (0,2)
a = 2 so we have:-
x^2 = 4(2)y
y = (1/8) x^2 is the answer.
Answer:
5n+2
Step-by-step explanation:
i hope this helps
Answer:
The answer would be one triangle. it is only one triangle because the sum of the angles of any triangle have to equal 180°. So if you add all of the angles you gave us, that would equal 180°.
I hope that was the answer you were looking for.
Step-by-step explanation:
