3 years ago

Which addition does the model below represent?

2 answers:

7 0

 $option \: a \: is \: the \: right \: answer \\ 3 + ( - 1) \\ hope \: it \: helps \\ good \: luck \: on \: your \: assignment$ 

Maurinko [17]3 years ago

7 0

Answer:

the answer above me (3+(-1)

Step-by-step explanation:

im taking the test rn

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fgiga [73]

Answer:

(- 3.5, 0.5 )

Step-by-step explanation:

Given endpoints (x₁, y₁ ) and (x₂, y₂ ) then the midpoint is

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Here (x₁, y₁ ) = (- 3, - 1) and (x₂, y₂ ) = (- 4, 2) , then

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Step-by-step explanation:

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Which of the following are solutions to 2x2 – 8x - 90? Select all that apply.

Bond [772]

Answer:

x=-5, x=9

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form

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

is equal to

$x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$2x^{2} -8x-90$

equate to zero

$2x^{2} -8x-90=0$

$2=-1\\b=-8\\c=-90$

substitute in the formula

$x=\frac{-(-8)\pm\sqrt{-8^{2}-4(2)(-90)}} {2(2)}$

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therefore

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