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V125BC [204]
3 years ago
8

Which equation represents a proportional relationship?

Mathematics
2 answers:
blagie [28]3 years ago
8 0
Y=15x is the answer :)
meriva3 years ago
7 0

Answer:

y=15x

Step-by-step explanation:

To figure out if an equation is proportional, substitute 0 for x. If y then equals 0, then the equation is proportional.

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The sloping side of a cone is 10cm and the height is 8cm. find the radius of the base
amid [387]
You can use Pythagoras theorem to find the radius.

r^2 + 8^2 = 10^2

r^2 + 64 = 100

r^2 = 36

r = 6
3 0
3 years ago
Solve fast answer gets brain and its 30 points ty
Vlad1618 [11]

Answer:

74

Step-by-step explanation:

7 0
3 years ago
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Differentiating a Logarithmic Function in Exercise, find the derivative of the function. See Examples 1, 2, 3, and 4.
wlad13 [49]

Answer:

\frac{dy}{dx}=\frac{x(1-2lnx)}{x^{4}}

Step-by-step explanation:

To solve the question we refresh our knowledge of the quotient rule.

For a function f(x) express as a ratio of another functions u(x) and v(x) i.e

f(x)=\frac{u(x)}{v(x)}\\, the derivative is express as

\frac{df(x)}{dx}=\frac{v(x)\frac{du(x)}{dx}-u(x)\frac{dv(x)}{dx}}{v(x)^{2} }

from y=lnx/x^{2}

we assign u(x)=lnx and v(x)=x^2

and the derivatives

\frac{du(x)}{dx}=\frac{1}{x}\\\frac{dv(x)}{dx}=2x\\.

Note the expression used in determining the derivative of the logarithm function.it was obtain from the general expression of logarithm derivative i.e y=lnx\\\frac{dy}{dx}=\frac{1}{x}

If we substitute values into the quotient expression we arrive at

\frac{dy}{dx}=\frac{(x^{2}*\frac{1}{x})-(2x*lnx)}{x^{4}}\\\frac{dy}{dx}=\frac{x-2xlnx}{x^{4}}\\\frac{dy}{dx}=\frac{x(1-2lnx)}{x^{4}}

8 0
3 years ago
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katen-ka-za [31]

Answer:

126

Step-by-step explanation:

set up a proportion, 59/140= x/300. Cross multiply: 140x= 17700. Then divide both sides by 140. the answer is 126.42857... ore rounded, 126.

7 0
3 years ago
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Three cards are drawn with replacement from a standard deck. what is the probability that the first card will be a diamond, the
svlad2 [7]
507/17576 or 0.0288 

you take all the probabilities separate then multiply them all together. Then Simplify
6 0
3 years ago
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