Answer:
D. 8
Step-by-step explanation:
y varies jointly as x and z
y = k(xz)
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Find k, the constant of variation
y = 12 when x = -2 and z=3
12 = k(-2 * 3)
12 = k(-6)
k = -2
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find y when x is 4 and z is -1
using k = -2
y = -2(4 * -1)
y = -2(-4)
y = 8
Answer:
6
Step-by-step explanation:
Answer: 25
Step-by-step explanation: As 2.5 inches is only half of the top part of the cylinder you need to add the additional 2.5 inches. So, 2.5 + 2.5 is 5:
And you need 5 inches for each cylinder.
2.5 + 2.5 = 5
5 x 5 = 25
There's your answer!
If we simplify 18/27 by 9, the result is 2/3. We get this by dividing both the numerator and denominator by the greatest common factor of 9. So 2/3 has the same proportion as 18/27.
= 18/27
= (18÷9)/(27÷9)
= 2/3
ANSWER: C) 2/3
Hope this helps! :)
