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anyanavicka [17]

2 years ago

15

A stocks value decreased the same amount each day for 4 days. If the total change in value was -2.5 what was the change each day

?

1 answer:

KIM [24]2 years ago

4 0

Answer:

-0.625

Step-by-step explanation:

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Jack is 4 times as old as lacey. 7 years ago the sum of their age was 61. how old are they now?

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Mandy has a total of $2.00 in change in her purse. Complete each set of coins below to show amounts equivalent to $2.00.

Montano1993 [528]

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-3x-12>8x+21 please help 30 points!!!!!!!!!!!!!!

hram777 [196]

-3x-12> 8x + 21
+12 +12
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2 years ago

What types of solutions will a quadratic equation have when the discriminant b2 − 4ac in the quadratic formula is a perfect squa

netineya [11]

<em>The discriminant must be zero.</em>

Step-by-step explanation:

A Perfect-Square Trinomial is given by the form:

$(\alpha x \pm \beta)^2=(\alpha^2x^2 \pm 2\alpha x \beta + \beta^2)$

The discriminant in the quadratic formula is:

$\Delta=b^2-4ac \\ \\ \\ Here: \\ \\ a= \alpha^2 \\ \\ b=2\alpha \beta \\ \\ c=\beta^2 \\ \\ \\ So: \\ \\ \Delta=(2\alpha \beta )^2-4(\alpha^2)(\beta^2) \\ \\ \Delta=4\alpha^2 \beta^2-4\alpha^2 \beta^2=0$

So in order to get a perfect square,<em> the discriminant must be zero.</em>

<em></em>

<h2>Learn more:</h2>

Discriminant: brainly.com/question/1537997

#LearnWithBrainly

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3 years ago