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3 years ago

5

Look at this picture to help

1 answer:

vlabodo [156]3 years ago

7 0

The answer is N(-3,3) the formula of reflecting across the x-axis is (x,-y)

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What is the value of m, if the equation my2+2y−4=0 has exactly one root?

stich3 [128]

Answer:

$m=\frac{-1}{4}$

Step-by-step explanation:

A quadratic equation has one root if the discriminant is 0.

That is we need $b^2-4ac=0$ for this particular question.

Compare the following to find $a,b, \text{ and } c$ :

$ax^2+bx+c=0$

$my^2+2y-4=0$

The variable $x$ is representative of the variable $y$ here.

$a=m$

$b=2$

$c=-4$

Plug in into $b^2-4ac=0$ :

$(2)^2-4(m)(-4)=0$

$4+16m=0$

Subtract 4 on both sides:

$16m=-4$

Divide both sides by 16:

$m=\frac{-4}{16}$

Reduce:

$m=\frac{-1}{4}$

6 0

3 years ago

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What is the correct notation for a function that has any given input value equal to its output value?

Ket [755]

Answer:

0ption B is correct

ie:f(x) = x

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3 years ago

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What percent of 12 is 7?<br> Please show work :)

SVETLANKA909090 [29]

It’s 3 hope this helps

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3 years ago

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Which shapes appear to have perpendicular sides

a_sh-v [17]

A square, rectangle, rhombus (I think)

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3 years ago

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The difference of two positive numbers is 7 and the sum of their squares is 109. Find the numbers.

Ray Of Light [21]

Answer:

$Numbers\ are\ 58\ and\ 51.$

Step-by-step explanation:

The the numbers are $x\ and\ y$ .

<em>Difference:</em>

<em></em> $Difference\ of\ numbers=7\\\\x-y=7....................eq(1)$ <em></em>

<em>Sum:</em>

<em></em> $Sum\ of\ numbers=109\\\\x+y=109...........................eq(2)$ <em></em>

<em></em>

Solve $eq(1)$ and $eq(2)$ .

$eq(1)+eq(2)\\\\x-y+x+y=7+109\\\\2x=116\\\\x=58\\\\Now\ from\ equation\ 1\\\\x-y=7\\\\y=x-7\\\\y=58-7\\\\y=51$

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3 years ago