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d1i1m1o1n [39]
3 years ago
10

Identify the variation as direct, inverse, joint or combined. y = 7x

Mathematics
2 answers:
ASHA 777 [7]3 years ago
6 0
This is an example of a direct variation.
klasskru [66]3 years ago
6 0

Answer:

Direct variation

Step-by-step explanation:

Hi, to answer the question we haveto analyze the information given.

The expression of y =7x is a direct variation, because if the value of one variable changes, the other variable´s value changes as well.

for example:

if x = 1 , y = 7.

y= 7(1)=7

if x =2 , y= 14.

y = 7(2 ) =14

Feel free to ask for more if it´s necessary or if you did not understand something.

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A spherical hot air balloon has a diameter of 55 feet when the balloon is inflated the radius increases at a rate of 1.5 feet pe
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Step-by-step explanation:

The given data:

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Solution:

dr/dt = 1.5 feet per minute = 1.5 ft/min

V = 4/3·π·r³

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= 696556.67 ft³

When the volume 2/3 the maximum volume

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= 464371.11 ft³

The radius, r₂ at the point is

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348278.333333

r₂ = ∛(348278.33 ft³) ≈ 70.36 ft

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The time for the radius to increase to the

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Time taken for the radius to increase the length.

= is 70.369 ft/(1.5 ft/min)

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