Answer:
The second one.
Step-by-step explanation:
<span>To get the Greates Common Factor (GCF) of 21 and 40 we need to factor each value first and then we choose all the copies of factors and multiply them:
<span><span>21: 3 7</span><span>40: 222 5 </span><span>GCF: </span></span>The Greates Common Factor (GCF) is: 1<span>
</span></span>
Answer:
309
Step-by-step explanation:
a = 3, d = 6, n 52
Nth term of an Arithmetic sequence is given as:

Answer:
The equation you need for 3 is the volume of a sphere.
Then divide 12 by 2 to get the radius, which gives you 6, then insert this into the equation, and the answer you get for 3 is 904.78cm cubed. 904.8 (4 Significant figures) cm cubed.
So you plug (-3,7) into the equation and solve it, the answer is (-5,1)