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Gnom [1K]
3 years ago
6

If Y varies directly with X solve the following :

Mathematics
1 answer:
tresset_1 [31]3 years ago
4 0

Answer:

B) When Y = 90

X = 90 x -3

= -270

C) When X = -8

Y = 33.6(approx.)

D) When Y = 12.6

X = 12.6 x 3

= 37.8

Hope this helps!

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The speed of the boat going with a current is 20 mph. When the boat goes against the current, the speed is 16 mph. Find the spee
adoni [48]

Answer:

The speed of the boat in still water is 18 mph.

The speed of the current is 2 mph

Step-by-step explanation:

Let x represent the speed of the boat in still water.

Let y represent the speed of the current.

When the boat goes against the current, the speed is 16 mph. Assuming it traveled against the current while going upstream, its total speed would be (x - y) mph. It means that

x - y = 16  (equation 1)

Going downstream, the boat averages 20 mph. Assuming it traveled with the current, its total speed would be (x + y) mph. It means that

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Adding both equations, it becomes

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x = 36/2

x = 18 mph

Substituting x = 18 into equation 1, it becomes

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4 0
3 years ago
If the area of a circle measures 16 pi cm2, what is the circumference of the circle in terms of pi
Fiesta28 [93]

Answer: 8 pi

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Solution of the equation<br> 3x/5+1=4x/15+7
Anika [276]

Answer:

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Step-by-step explanation:

Given

\frac{3x}{5} + 1 = \frac{4x}{15} + 7 ( subtract 1 from both sides )

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Multiply through by 15 to clear the fractions

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Write the ratio as<br> fraction in simplest form, with<br> 16 gal to 72 gal
V125BC [204]

Answer:

2/9

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16/72 simplify in calculator =2/9

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2 years ago
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