説明：
A cube is made up of equal length sides (s).
The volume of a cube is s x s x s.
Therefore, s=4 in this case (4x4x4=64).
A cube is made up of 6 squares, each with an area of s x s.
Therefore, the surface area of a cube is 6 x s x s = 6 x 4 x 4 = 96
説明：
If you divide both sides of the formula by M, then A = F/M
説明：
3451/7562=.4563
説明：
40 divided by .08 = 500
説明：
With each of the 4 shirts you can wear one of the 5 ties,
so the total number of combinations is 4 x 5 = 20
説明：
$4.20/4 = $1.05
$4.20 - $1.05 = $3.15
説明：
Divide both sides by 0.05.
Therefore, z= 1/0.05=20
説明：
If x = y,
then you can subsitute x for y in the 2nd equation - so 4(x-x)+7 =
4(0)+7=7
説明：
V=LxWxH
L (327) x W(15.3) x H(12.6) =
63,039 cubic feet
説明：
4 cubed is 4 x 4 x 4 = 64
説明：
93 is not a prime number since it is equal to 31 x 3.
If you add up the digits of a number and they are divisible by 3,
then the number is also divisible by 3.
説明：
-1 × 1.8 + 32 = 30.2
説明：
If 1/3 are on vacation, then 2/3 are not. Of those 2/3 not on vacation,
3/4 are NOT sick. Therefore 2/3 x 3/4 are in the office (not on vacation and not sick)
= (2x3)/(3x4)=6/12=1/2
説明：
If x + y + 15 = 30, then z+ 15 = 30 (substitute x + y = z)
which means that z = 15. If z = 15, then 40 - z = 40 - 15 = 25
説明：
(10×3) = 30
12+18 = 30
説明：
You need to subtract the money that she spent ($500) from the original money that she had (Z).
説明：
There are 12 cards in total. Therefore,
the probability of picking a hockey card is 6/12 or 1/2.
説明：
-9x, -6x, -3x, x, 5x
Since we know x is positive, the terms can be placed in order from smallest to largest.
By definition the median is the middle term in this list
説明：
There are 18 total pieces of candy and 3 lollipops.
Therefore, the probability of picking one lollipop is 3/18 which simplifies to 1/6
説明：
There are a total of 28 cards – 7 red; 21 green.
Therefore the probability of selecting an red card is: 7/28 = 1/4)
説明：
After distributing the 2, the equation is equivalent to 6a -1 = 2a + 2.
Simplifying, 4a = 3, so a = 3/4
説明：
The goal here is to isolate the variable to one side with the constants on the other.
By subtracting 5x from both sides, you can rewrite the equation as: -5 = x + 8.
This simplifies to x = -13 when 8 is subtracted from both sides
説明：
The diagonal forms a right triangle with the width and the length acting as legs.
Using the Pythagorean theorem, the length of the triangle will be √25^2 – 15^2 =
√400 = 20, and the area will be 20 x 15 = 300
説明：
If the number of sophomores in the room is x, then the number of freshman is 7x.
The total number of people in the room is 7x + x = 8x. The number of people in the
room (8x) must be a multiple of 8.)
説明：
The sum of the exterior angles of any polygon is 360°, so the exterior angle at vertex Z is 360°-130°-110° = 120°.
However, this is not the value of the question asked. Since the sum of the interior angle of a polygon and its
exterior angle is 180°, the interior angle at vertex Z is 180°-120° = 60°
