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3 years ago

Hi, I have utterly no idea what I'm doing here.

Mathematics

2 answers:

Anna11 [10]3 years ago

6 0

Answer:

Factored form: 2x(2x^2+x+1)

Step-by-step explanation:

You're subtracting them. :)

kompoz [17]3 years ago

5 0

Answer:

2x(4x^2+x+1)

Step-by-step explanation:

f(x) = 9x^3 + 2x^2 - 5x + 4

g(x) = 5x^3 +0x^2 - 7x + 4

f(x) - g(x) =

=(9x^3-5x^3) + (2x^2-0x^2) + (-5x - (-7x)) + (4-4) = 4x^3 +2x^2 +2x

=2x(4x^2+x+1)

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Using a phone card to make a long distance call costs a flat fee of $0.57 plus $0.31 per minute starting with the first

aliina [53]

Answer:

it's d

Step-by-step explanation:

multiply 0.31 by the amount of minutes used (27) and add the flat fee to it.

0.31×27+(0.57)= 8.94

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2 years ago

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It is 3 feet and A hope i help you

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3 years ago

Please Someone help me i got a question and i have a exams please help! i have attached the picture help me!

MAXImum [283]

Will recommend to keep in touch with picture as name of angles are based on it!

$\\$

So as you can see BA is parallel to DC as the arrow signs are made on it. And the figure has four sides , therefore we get to know that the above picture is of parallelogram.

$\\$

$\rm\angle B = \angle D$

How ?

As we know it's a parallelogram, so there's one property of parallelogram that opposite sides of Angle are equal.

$\\$

$\hookrightarrow \sf2x =130 \degree$

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$\hookrightarrow \sf x =130 \degree\div 2 \degree$

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$\hookrightarrow \sf x = \dfrac{130}{2}$

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$\hookrightarrow \sf x = \dfrac{13 \times 10}{2}$

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$\hookrightarrow \sf x = \dfrac{13 \times\cancel{ 10}}{\cancel2}$

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$\hookrightarrow \sf x = \dfrac{13 \times5}{1}$

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$\hookrightarrow \sf x =13 \times5$

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$\hookrightarrow \sf x =65 \degree$

$\\$

Now Let's find value of y.

$\rm \angle DAB =\angle DCB$

How ?

As we know it's a parallelogram, so there's one property of parallelogram that opposite sides of Angle are equal.

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$\dashrightarrow \rm x = y$

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$\dashrightarrow \rm 65 = y$

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$\dashrightarrow \bf y = 65 \degree$

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y + z + 60° = 180°

angles on same line

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65 + 60 + z = 180°
125° + z = 180°
z = 180° - 125 °
z = 55°

At last :-

x = 65°

y = 65°

z = 55°

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What is the slope of this line that is y - 3 =<br> (x + 1) ?

tankabanditka [31]

y - 3 = 2/3x + 2/3

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