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Mathematics

2 answers:

vagabundo [1.1K]2 years ago

6 0

We start by using the first set of numbers they’ve given us

13 bouquets and 4 centerpieces equals $487.

in equation form, this is:

13b + 4c = 487

then the second set.

6 bouquets and 2 centerpieces equal $232.

in equation form, this is:

6b + 2c = 232

the system of equations is:

13b + 4c = 487
6b + 2c = 232

hope this helps!! (:

Goryan [66]2 years ago

4 0

Answer: x is for bouquets and y is for centerpieces.

Step-by-step explanation:

13x+4y=487

6x+2y=232

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A sliver of gold has a volume of 0.678 cm3. What is the mass of this sliver of gold?

Aliun [14]

Answer - 13.098 gm

Description -

Dear student,

As we know $Density= \frac{Mass}{Volume}$

⇒ Mass = Density * Volume

so multiplying given Volume with the Density of gold ,we can calculate the mass of the gold . Density of gold at room temp. is 19.32 grams per cubic centimeter.

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5 0

3 years ago

Need help with courseReplace 250 with 575 and -3 with -5.

Svetlanka [38]

Given

The demand function

$p(x)=\frac{250}{\sqrt{x}}-5$

To determine:

a) The revenue function.

b) The marginal revenue.

c) The marginal revenue when x=200.

d) The equation of tangent, and its derivation.

Explanation:

It is given that,

$p(x)=\frac{250}{\sqrt{x}}-5$

a) The revenue function is given by,

$\begin{gathered} R(x)=x\cdot p(x) \\ R(x)=x\times(\frac{250}{\sqrt{x}}-5) \\ R(x)=250\sqrt{x}-5x \end{gathered}$

b) The marginal revenue function is,

$\begin{gathered} R^{\prime}(x)=\frac{d}{dx}(R(x)) \\ =\frac{d}{dx}(250\sqrt{x}-5x) \\ =250\times(\frac{1}{2}\times x^{-\frac{1}{2}})-5 \\ =\frac{125}{\sqrt{x}}-5 \end{gathered}$

c) The marginal revenue when x=200 is,