The first statement "<span>y varies directly as x" means that as y increases, x also increases. To help us we need to assign a proportionality constant, k. We can now say:</span>
y=kx where k is just a constant. Then substitute the values,
180=kn
n=5k
With these equation we know that k is equal to (positive or negative) 6 and therefore we can get n to be (positive or negative) 30.
The second one, fourth one, and the fifth one
The area of the triangle should be 0.92.
The answer is A, it being squared.
Answer:
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Step-by-step explanation:
Answer:
Step-by-step explanation:
10 cm represents 5 meters in the real world
6 cm represents x meters
cross multiply
10x = 5*6
10x = 30
x = 3 meters so 6cm is equal to 3 meters in length
10 cm represents 5 meters in the real world.
5 cm = y meters
10y = 5*5
10y = 25 m
y = 25/10 meters = 2.5 meters
Area of the room = 2.5 * 3 = 7.5 square meters