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3 years ago

Solve these equations through the process of elimination and substitution

Mathematics

1 answer:

Inga [223]3 years ago

5 0

I have written out the steps to get to the answer of x=3, y=0

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Solid of Revolution Consider the following integral, which calculates the volume of a cylinder by considering it as a solid of r

svetoff [14.1K]

Answer:

Step-by-step explanation:

In this case the solution of the integral is

$\int\limits^{2\pi} _0 {} \, d\phi \int\limits^R_0 {\rho}h \, d\rho = [2\pi - 0](\frac{1}{2} )[R^{2} - 0]h = \pi R^{2}h$

because h is a constant, and where the expression

$\int {\rho} \, d\rho = \frac{\rho^{2}}{2}$

was used.

I hope this is usefull for you

regards.

4 0

4 years ago

Rewrite the rational exponent as a radical exponent

miv72 [106K]

$\bf a^{\frac{ n}{ m}} \implies \sqrt[ m]{a^ n} \\\\
-------------------------------\\\\
\sqrt[3]{2^7}\implies 2^{\frac{7}{3}}$

5 0

3 years ago

I don’t know how to do this please help please!!!

Irina18 [472]

Answer:

study more so you can understand

3 0

3 years ago

Please help me with this

drek231 [11]

Answer:

100 in²

Step-by-step explanation:

Since the figures are similar

the linear ratio of sides = a : b , then

ratio of areas = a² : b²

ratio of sides = 15 : 21 = 5 : 7

ratio of areas = 5² : 7² = 25 : 49

let the area of the smaller figure be x then by proportion

$\frac{25}{x}$ = $\frac{49}{196}$ ( cross- multiply )

49x = 4900 ( divide both sides by 49 )

x = 100

Area of smaller figure is 100 in²

7 0

3 years ago

Im doing a test review and I have no idea how to do this

Arisa [49]

Answer:

94.3?

Step-by-step explanation:

Well, the straight line is 180 degrees, there is a 90 degree square, and a 13 degree angle. So add them up and divide by three?

6 0

4 years ago