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3 years ago

The equation below describes a proportional relationship between x and y. What is the constant of proportionality? y=2/7x

Mathematics

2 answers:

andreev551 [17]3 years ago

8 0

Hello :
is the constant of proportionality is : 2/7

vekshin13 years ago

8 0

Hi there!

The awnser is 2/7

Hope this helps!

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Which of the following functions grows at the same rate as ((x^4)+x)^(1/2)

neonofarm [45]

Answer:

Step-by-step explanation:

(x⁴ + x)^½

As x approaches infinity, x⁴ becomes much larger than x. So:

(x⁴ + x)^½ ≈ (x⁴)^½ = x²

So x² grows at the same rate as (x⁴ + x)^½.

6 0

3 years ago

If the rate of the boat in still water is 27 mph, and the rate of the current of a river is x mph, what is the rate of the boat

BigorU [14]

Answer:

a)27-x

b)27+x

Step-by-step explanation:

when a boat travels in the same direction as the current is downstream-->speeds the boat. If the rate of the boat in still water is 27 mph and the rate of the current of a river is x mph, the rate of the boat when the boat is going downstream is 27+x

when a boat travels against the current is upstream-->slow down. If the rate of the boat in still water is 27 mph and the rate of the current of a river is x mph, the rate of the boat when the boat is going upstream is 27-x

6 0

4 years ago

Let

frutty [35]

Here is the answer in comma-separated list.

(5, 10) , (10,15), (15, 20) (20, 25) (25, 300 (30, 35)

You need 5 dimes while having 10 or 25

4 0

3 years ago

Use the sum to product formula to find exact values: if cos255 - cos195 = squrtroot a/ 2 then a=

hodyreva [135]

By applying trigonometric expression and direct comparison, we conclude that a = 2 such cos 255° - cos 195° = √a / 2

<h3>How to analyze a trigonometric expression</h3>

In this question we need to simplify a trigonometric expression in order to find the value of a. In this case, we need to use the following formula:

$\cos \theta - \cos \xi = - 2\cdot \sin \left(\frac{\theta + \xi}{2} \right)\cdot \sin \left(\frac{\theta - \xi}{2} \right)$

Then,

cos 255° - cos 195° = - 2 · sin 225° · sin 30°

cos 255° - cos 195° = - 2 · sin (- 135°) · sin 30°

cos 255° - cos 195° = 2 · sin 135° · sin 30°

cos 255° - cos 195° = 2 · (√2 / 2) · (1/2)

cos 255° - cos 195° = √2 / 2

Then, by direct comparison we find that a = 2.

To learn more on trigonometric expressions: brainly.com/question/10083069

#SPJ1

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2 years ago

What is 1+1? I am very confused, is it 1, 0, or 3?

Yuri [45]

Answer:

1 + 1 = 2, if you are doing multiplication then it is 1 x 1 = 1

Step-by-step explanation:

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3 years ago

The equation below describes a proportional relationship between x and y. What is the constant of​ proportionality? y=2/7x

The equation below describes a proportional relationship between x and y. What is the constant of proportionality? y=2/7x