Answer:

Step-by-step explanation:
The general equation of a sphere is as follows:

In which the center is
, and r is the radius.
In this problem, we have that:

So

through the point (4,3,-1)
This leads us to find the radius.



So the equation of the sphere is:

Answer:
x=4 and y= 2
Step-by-step explanation:
I’m sorry I don’t see the graph so I would not know.
Together it would take 3 hours.
Team A can wrap all gifts in 7 hours; thus they can wrap 1/7 of the gifts in 1 hour.
Team B can wrap all gifts in 5 hours; thus they can wrap 1/5 of the gifts in 1 hour.
1/7h + 1/5h = 1, where h is the number of hours; it equals 1 because it is 100% of the gifts;
Find a common denominator. 35 is the first thing 7 and 5 will both divide into. Convert the fractions:
5/35h + 7/35h = 1
12/35h = 1
Divide both sides by 12/35:
12/35h ÷ 12/35 = 1 ÷ 12/35
h = 1/1 ÷ 12/35
h = 1/1 × 35/12
h = 35/12
h = 2.9
h ≈ 3
Answer:

Step-by-step explanation:



