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3 years ago

14

Please help! i don’t understand this

1 answer:

katrin [286]3 years ago

7 0

Answer:

$No\ Solutions$

Step-by-step explanation:

$We\ are\ given\ that,\\-x+2y=7\\x-2y=7\\By\ simply\ adding\ the\ system\ of\ equations,\\(-x+x)+(2y-2y)=(7+7)\\0+0=14\\Hence,\\0=14\\As\ the\ equation\ above\ doesnt\ make\ sense\ as\ 0\ doesn't\ equal\ to\ 14,\\There\ are\ no\ solutions\ that\ satisfy\ the\ equation.$

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Answer:Hope this helps you and have a nice day

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3 years ago

If the domain of the function F = {(x, y) | 2x + y = 7} is {1, 2, 3}, what is the range?

Molodets [167]

Answer:

The range of the function is {1,3,5}.

Step-by-step explanation:

The function is defined as

$F=\{(x,y)|2x+y=7\}$

The set of all possible inputs is called domain and the set of output is called range.

In other words the possible values of x are elements of domain and the values of y are the elements of range.

Since the domain is {1,2,3} and the function is

$2x+y=7$

Put x=1

$2(1)+y=7$

$2+y=7$

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Put x=2

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$y=7-4$

$y=3$

Put x=3

$2(3)+y=7$

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8 0

3 years ago

Write an equation in point-slope form for the line that has the given slope m

meriva

Answers:

13) y + 2 = 1/4x

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3 years ago

The volume of a right triangular prism is 72 cubic feet. The height of the prism is 9 feet. The triangular base is an isosceles

Maslowich

Answer:

<h2>The area of the triangular base = 8 ft²</h2>

Step-by-step explanation:

The formula of a volume of a prism:

$V=A_BH$

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We have

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Substitute:

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3 0

3 years ago

Read 2 more answers

Log_{7 }(5 - 3x)<br>Find the derivative

V125BC [204]

Let <em>y</em> be the expression you want to differentiate:

$y=\log_7(5-3x) \implies 7^y=5-3x$

Now,

$7^y=e^{\ln(7^y)}=e^{y\ln(7)}$

Use the chain rule to differentiate both sides with respect to <em>x</em> :

$\ln(7)e^{y\ln(7)}\dfrac{\mathrm dy}{\mathrm dx}=-3$

Solve for d<em>y</em>/d<em>x</em> :

$\ln(7)7^y\dfrac{\mathrm dy}{\mathrm dx}=-3$

$\dfrac{\mathrm dy}{\mathrm dx}=-\dfrac3{\ln(7)7^y}$

$\dfrac{\mathrm dy}{\mathrm dx}=\boxed{-\dfrac3{\ln(7)(5-3x)}}$

6 0

3 years ago