The statement " <span>y </span><span>varies directly as </span><span>x </span><span>," means that then </span><span>x </span>increases,<span>y </span><span>increases </span><span>by the same factor so we have: y/x=k
for question 1 then: 15/5=3
so the direct variation equation is y=3x
Now if x=9 you only have to replace x in your equation and you get:
y=3*9=27</span>
180 = 15(12)
180 = 15(6+6)
180 = 15( 9 + 3)
Answer:
- n = 5
- m = 12
- m= -14
- y =30
Step-by-step explanation:
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This is the concept of density, volume and mass of different materials; To calculate for the volume of an aluminium material with density of 2.375 grams per cubic centimeter and a mass of 0.78 Kilogram we proceed as follows;
Density=mass/volume
making volume the subject we get;
volume=mass/density
thus;
mass=0.78 kg= 780 g
density=2.375 g/cm^3
Hence,
volume=780/2.375=328.421 cm^3
Okay, so the first graph shows the amount that Leona is payed versus the number of newspapers she delivers.
We can clearly see from the graph; the more newspapers she delivers, the more she's payed.
For the second question (the table), it looks like the fixed fee for the boat rental was $27, as that's the number that really doesn't match the rest of the table. (Not to mention it's the very first number.
Then, the hourly rate is $12, as the price rises by 12 every hour after hour 1.
For the third question, the y-intercept is the amount of money in Colby's savings after x amount of years.
