Answer:
No idea sorry we have not learned this yet
The area of a trapezoid is A = (a+b/2)(h).
So just plug in your numbers.
Answer:
C
Step-by-step explanation:
Dependent quantity = y-value
Answer:
75%
Explanation:
3 divided by 4 is 0.75, move the decimal right 2 places and add a percentage sign
Answer:
56
Step-by-step explanation:
Complete question:
Z varies jointly with x and y , x=2 and y=2, z=7. Find z when x=4 and y=8 using joint variation . (I need the problem worked out step by step)
If z varies jointly with x, and y, this is expressed as;
z = kxy
If z=7 when x= 2, y= 2
7 = k(2)(2)
7 = 4k
k = 7/4
To get z when x= 4 and y = 8
z = kxy
z =7/4 (4)(8)
z = 7*8
z = 56
Hence the value of z is 56
