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vagabundo [1.1K]
3 years ago
6

Y = -4× - 5y = -4× + 5​

Mathematics
1 answer:
adoni [48]3 years ago
4 0

Answer:

No solution.

Step-by-step explanation:

Eliminate the equal sides of each equation and combine.

-4x-5=-4+5

Solve -4x-5=-4x+5 for x by moving all terms containing x to the left side of the equation. Add 4x to both sides of the equation.

-4x-5+4x=5

Combine the opposite terms in -4x-5+4x.

Add -4x and 4x.

0-5=5

Subtract 5 from 0.

-5=5

Since -5=5, there are no solutions.

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Evaluate -x+4 when x = -2
Gnesinka [82]

Answer:

6

Step-by-step explanation:

=> -x+4

<u><em>Given that x = -2</em></u>

=> -(-2)+4

=> 2+4

=> 6

6 0
4 years ago
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How do I solve this geometry problem?????
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3 years ago
To $28.35 find the. total cost if the tax is 6.25% and a 20% tip
Alik [6]
Your answer:
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Suppose c is inversely proportional to the square of d. If c=6 when d=3⁢, find the constant of proportionality and write the for
NemiM [27]

Answer:

The constant of proportionality is 54.

k = 54

c as a function of d:

c(d) = \dfrac{54}{d^2}

c(7) = \dfrac{54}{49}

Step-by-step explanation:

We are given the following in the question:

c is inversely proportional to the square of d.

\Rightarrow c\propto \dfrac{1}{d^2}\\\\\Rightarrow c = \dfrac{k}{d^2}\\\\\text{where k is constant of proportionality}

When c = 6, d = 3.

Plugging the values, we get,

6 = \dfrac{k}{3^2}\\\\\Rightarrow k = 6\times 3^2 = 54

Thus, the constant of proportionality is 54.

c as a function of d can be written as:

c(d) = \dfrac{54}{d^2}

We have to find value of c when d = 7.

Putting values, we get,

c(7) = \dfrac{54}{(7)^2}=\dfrac{54}{49}

is the required value of c.

4 0
3 years ago
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Elena L [17]

Answer:

B. y=x^2+3 \\\\D.$ $x^2+3y=8

Step-by-step explanation:

A quadratic function is a function in which the highest power of the unknown variable is 2.

Formally, a quadratic function is defined as a function of the form:

f(x)=ax^2+bx+c, a\neq 0

From the given options, only B and D has the highest power as 2. Therefore, the equations that represent quadratic functions are:

B. y=x^2+3 \\\\D.$ $x^2+3y=8

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3 years ago
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