The best way to answer this item is to use the Substitution method. Substitute the value of y from the first equation to the y of the second equation such that the second equation becomes,
-4x + 3(x - 4) = -3
Simplifying the equation,
-x = 9
Dividing both sides by -1 gives an answer of,
<em>x = -9</em>
Then, substitute the value of x in the first equation.
y = -9 - 4
<em> y = -13</em>
The answer to this item is letter B.
Answer:
-24
Step-by-step explanation:
3 * -4 =.-12
-12 * 2 = -24
Ok this is the answer to this question 2(x+1)
Is the whole thing divided by 6 or just the 5?
Answer:
C. 14 metres cubed
Step-by-step explanation:
The volume of a sphere is denoted by: 
, where r is the radius, while the volume of a cylinder is denoted by: 
, where r is the radius and h is the height.
Here, we know that the sphere and cylinder have the same radius and height. However, the "height" of the sphere is technically just the diameter, which is twice the radius. So, h = 2r. We know the volume of the cylinder is 21, so:
πr³ = 21/2 = 10.5
Now plug this into the volume of a sphere formula:
The answer is C, 14 metres cubed.
