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2 years ago

Y is inversely proportional to the square of x.

Mathematics

1 answer:

Mkey [24]2 years ago

4 0

Step-by-step explanation:

x²y = k, where k is a real constant.

When x = 3.5, y = 8.

=> (3.5)²(8) = k, k = 98.

When y = 8/9,

we have x²(8/9) = (98).

=> x² = 110.25

=> x = 10.5 or x = -10.5.

Since we want the negative value,

the answer is x = -10.5.

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Scientists estimate there are _____ different plant species.

Law Incorporation [45]

The answer is B.

There are about 391,000 of plants currently known to science.

Hope this helps.

4 0

3 years ago

Read 2 more answers

PLZ PLZ PLZ PLZ PLZ HELP, I HAVE TWO MORE QUESTIONS IF YOU WANT MORE POINTS

12345 [234]

B/5 > 30

we’re going to simplify by multiplying by 5 on both sides.

b > 150 should be the answer!

8 0

3 years ago

Consider the functions below. f(x, y, z) = x i − z j + y k r(t) = 4t i + 6t j − t2 k (a) evaluate the line integral c f · dr, wh

fredd [130]

With

$\vec r(t)=4t\,\vec\imath+6t\,\vec\jmath-t^2\,\vec k$

we have

$\mathrm d\vec r=(4\,\vec\imath+6\,\vec\jmath-2t\,\vec k)\,\mathrm dt$

The vector field evaluated over this parameterization is

$\vec f(x,y,z)=\vec f(x(t),y(t),z(t))=4t\,\vec\imath+t^2\,\vec\jmath+6t\,\vec k$

so the line integral is

$\displaystyle\int_{-1}^1(4t\,\vec\imath+t^2\,\vec\jmath+6t\,\vec k)\cdot(4\,\vec\imath+6\,\vec\jmath-2t\,\vec k)\,\mathrm dt$

$=\displaystyle\int_{-1}^1(16t+6t^2-12t^2)\,\mathrm dt=-4$

6 0

3 years ago

I have no idea how to do this ha

TEA [102]

Answer:

Step-by-step explanation:

If they are parallel then the 2 labelled angles sum to 180.

2x+50+5x-80=180

7x-30=180

7x=210

x=30

7 0

3 years ago

Read 2 more answers

How do I solve 3= log8+3log x?

taurus [48]

3 = log(8) + log(x³) 

When adding logs, you are multiplying the terms altogether. 

3 = log(8x³) 

Then, by log_a b = n ==> aⁿ = b: 

10³ = 8x³ [Since the base is not given, I assume that the base is 10] 
1000 = 8x³ 

Finally, solve for x. 

1000/8 = x³ 
x³ = 125 
x = (125)^(1/3) . . .Set both sides to the power of 1/3. 
x = 5 

Hence, x = 5.

3 0

3 years ago