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2 years ago

PLEASE NO DOWNLOADS AND PLEASE ANSWER IT QUICK

Mathematics

1 answer:

Viktor [21]2 years ago

8 0

Answer:

the answer is step 2 I hope it's help

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-15n-10p-5q should be correct

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3 years ago

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monitta

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3w - 2x + 14 w = -5 x = -3

maksim [4K]

Answer:

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Step-by-step explanation:

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In the following proportion, what does z equal?<br><br> 3/7 = 15/z

NARA [144]

3/7 = 15/z

using cross products

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3 years ago

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What is the line of symmetry for the parabola whose equation is y=-x^2-x+2

Delicious77 [7]

Answer:

$\huge \boxed{\sf \ \ x=-\dfrac{1}{2} \ \ }$

Step-by-step explanation:

Hello,

We need to express this parabola using this kind of expression

$y=a(x-b)^2+c$

and then, the line of symmetry will be the line x = b

Let's do it !

$\text{*** Complete the square ***} \\ \\ x^2+x=x+2\cdot \dfrac{1}{2}\cdot x=(x+\dfrac{1}{2})^2-\dfrac{1^2}{2^2}=(x+\dfrac{1}{2})^2-\dfrac{1^2}{4} \\ \\ \text{*** Apply it to our parabola } \\ \\y=-x^2-x+2=-(x^2+x)+2=-[(x+\dfrac{1}{2})^2-\dfrac{1}{4}]+2 = -(x+\dfrac{1}{2})^2+\dfrac{1+2*4}{4}= -(x+\dfrac{1}{2})^2+\dfrac{9}{4} \\ \\ \text{*** It comes ***} \\ \\ \Large \boxed{\sf \ \ y=-(x+\dfrac{1}{2})^2+\dfrac{9}{4} \ \ }$

So the line of symmetry is

$\huge \boxed{\sf \ \ x=-\dfrac{1}{2} \ \ }$

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

4 0

2 years ago