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3 years ago

Will give braineliest

Mathematics

2 answers:

OleMash [197]3 years ago

7 0

Answer:

$3Fx + 3Gy = 3H\\Qx + Ry = S$

Step-by-step explanation:

Given:

The system of equations given are:

$Fx + Gy = H \\Qx + Ry = S$

If an equation is multiplied by a number throughout, then the equation remains the same by multiplication property of equality. The multiplication property of equality says that if both sides of the equation is multiplied by the same number, then the new equation is equivalent to the previous equation.

For example: If $x+y =2$ is multiplied by 2 on both sides, then the new equation will be $2x+2y=4$ which is equivalent to $x+y =2$ .

So, from among all the choices given, the first choice represents the above mentioned property. The equation $Fx + Gy = H$ is multiplied by 3 on both sides. So, the equation $3Fx + 3Gy = 3H$ is equivalent to $Fx + Gy = H$ .

The second equation $Qx + Ry = S$ has not been changed. So, the equivalent system of equations to the given system is:

$3Fx + 3Gy = 3H\\Qx + Ry = S$

o-na [289]3 years ago

4 0

Answer:

Step-by-step explanation:

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Geraniums are $2.95 each. How much will 5 plants cost? (include 7% sales tax.)

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If discriminant (b^2 -4ac>0) how many real solutions

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Answer:

If Discriminant, $b^{2} -4ac >0$

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Step-by-step explanation:

To Find:

If discriminant (b^2 -4ac>0) how many real solutions

Solution:

Consider a Quadratic Equation in General Form as

$ax^{2} +bx+c=0$

then,

$b^{2} -4ac$ is called as Discriminant.

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If Discriminant, $b^{2} -4ac >0$

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3 years ago

Suppose that P(A)=0.5, P(B)= 0.4 and P(B/A) =0.6. Find each of the following.

Lady_Fox [76]

Part (a)

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P(A and B) = P(A)*P(B/A)

P(A and B) = 0.5*0.6

P(A and B) = 0.3

<h3>Answer: 0.3</h3>

==========================================

Part (b)

We'll use the result from part (a)

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<h3>Answer: 0.6</h3>

===========================================

Part (c)

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Events A and B are not mutually exclusive since P(A or B) is not zero.

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