<span>speed=distance/time
</span><span>time = distance/speed
</span>Keep distance and speed in cm and cm/sec
Meters x 100 = cm time
<span>= 50 m X 100/ 1 = 5000 secs </span>
<span>= 5000/60 mins = 83 1/3 mins </span>
<span>1/3min = 20 sec.
</span>So 83 1/3 mins
<span>= 1 Hr 23 Min and 20 Secs</span>
Answer:
4 1/4
Step-by-step explanation:
This is the best expression or the best simplyfied version.
A material made of two or more compounds where the components aren't chemically combined is called a mixture. They both keep their individual chemical properties and their chemical makeup isn't affected by the combination.
Hope this helps!
Answer:
-25.17 miles per gallon.
-It costs $49.02 to fill your tank.
Step-by-step explanation:
-To find the miles per gallon, you can use a rule of three:
17.2 gallons → 433 miles
1 gallon → x
x=(1*433)/17.2= 25.17
If your gas tank holds 17.2 gallons, you car can drive 25.17 miles per gallon.
-To find the cost to fill your tank, you have to multiply the price per gallon for the amount of gallons that the tank can hold:
$2.85*17.2=$49.02
It costs $49.02 to fill your tank.
50 ounces of 15% saline solution contains 0.15*50 = 7.5 ounces of salt.
Let x be the amount of pure water you add to this solution. Then you end up with (x + 50) ounces of this new solution. The amount of salt stays the same.
You want the new solution to have a concentration of 10%. This means you need
7.5 / (x + 50) = 0.1
==> 7.5 = 0.1(x + 50)
==> 7.5 = 0.1x + 5
==> 2.5 = 0.1x
==> 2.5/0.1 = 0.1x/0.1
==> x = 25
