Answer:
600 cubic feet of water
Step-by-step explanation:
If the pool is filled 4 feet and the pool is 5 feet deep, that leaves 1 foot of depth left to fill. This makes the volume equation 30 x 20 x 1 which equals 600.
Answer:
33°
Step-by-step explanation:
The sum of the 3 angles in a triangle = 180°
Subtract the sum of the 2 given angles from 180 for ∠1, that is
∠1 = 180° - (116 + 31)° = 180° - 147° = 33°
Answer: Choice A
---------------------------------
Explanation:
The rule I'm going to use is if |x| <= k, then -k <= x <= k
where k is some positive number
The notation <= means "less than or equal to"
|2x-6| <= 10
-10 <= 2x-6 <= 10 ... use the rule mentioned above
-10+6 <= 2x-6+6 <= 10+6 ... add 6 to all sides
-4 <= 2x <= 16
-4/2 <= 2x/2 <= 16/2 ... divide all sides by 2
-2 <= x <= 8
So we'll have a number line with closed circles at -2 and 8. The shaded region is between the closed circles.
This is a shorthand way of saying what choice A is saying. For some reason, your teacher decided to make the wording more clunky.
Saying "shading to the right of -2 and shading to the left of 8" is the same as "shading between -2 and 8"
So that's why choice A is the answer
Note: the closed circle indicates we include the endpoint as part of the solution set, or shaded region.
Answer:
Step-by-step explanation:
Heat always flows from a hotter object to a colder one. If heat flows from the sphere to the water, 
A is wrong. If the temperature of the water is greater than 8 °C, heat will flow from the water to the sphere.
B is wrong. If the temperature of the water is lower than 8 °C, heat will flow from the sphere to the water..
D is wrong. If heat flows from the water to the sphere, the temperature of the water will decrease.
