Ratio of Nickel to Zinc:
( 2/7 ) = ( Nickel /4.9)
Nickel = 1.4 lbs.
Ratio of Copper to Zinc:
( 9/7 ) = ( Copper /4.9)
Copper = 6.3 lbs.
Alloy = Zinc + Nickel +
Copper
Alloy = 4.9 lbs. + 1.4 lbs.
+ 6.3 lbs.
Alloy = 12.6 lbs.
Hope
this answer will be a good h<span>elp for you.</span>
Is there an image that you can provide with this question to make it clearer?
9:15 is also equal to 3:5
Alright, so we have tickets for 8 dollars. The number of tickets can represent x, and the money totaled is 8x. x=16+17+13=46, so we can substitute that in to get 8*46 for the total revenue=368 dollars
Answer:
the helix intersects the sphere at t=4 and t=(-4)
Step-by-step explanation:
for the helix r(t) = [ sin(t) , cos(t) , t ] then x=sin(t) , y=cos(t) and z=t
thus the helix intersect the sphere x² + y² + z² = 17 at
x² + y² + z² = 17
[sin(t)]²+[cos(t)]²+ t² = 17
1 + t² = 17
t² = 16
t = ±4
thus the helix intersects the sphere at t=4 and t=(-4)
