Hello from MrBillDoesMath!
Answer:
z = 28 (y/x)
Discussion:
"
z varies inversely with x and directly with y" translates into
z = k * (y/x) (*)
Substituting x = 2, y = 3, z = 42 in (*) gives
42 = k (3/2) => multiply both sides by 2/3
42 (2/3) = k (3/2)(2/3) => 42(2/3) = 28; (3/2)(2/3) = 1
28 = k
Conclusion:
z = 28 (y/x)
Thank you,
MrB
Hello :)
When y=3
2(3+2)=12
When y=8
2(8+2)=20
When y=-4
2(-4+2)=-4
When y=10
2(10+2)=24
When y=2
2(2+2)=8
It will be 7 seconds because you need to find out one, how many feet you can do per second and that number is 3. Therefore you can do 21/3 and you get an answer of 7. Hope this helped! ♀️
Pytagorean theorem
height10
attached at 10-4=6 yards from bottom
8 yards from base to away
a^2+b^2=c^2
a and b are side legnths and c=hypotonuse
so therfore we are given a and b and we must solve for c
so
6=height
8=base
6^2+8^2=c^2
36+64=c^2
100=c^2
square root
10=c
so therfor the legnth of each cable is 10 yards
3 cables so 3 times 10=30
30 yards needed
Answer:
1. 4:3
2. 2:3
3. 2:9
4. 3:4
Step-by-step explanation:
