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3 years ago

12

I need help....Help me please .

1 answer:

maks197457 [2]3 years ago

5 0

Answer:

i cant see the picture

Step-by-step explanation:

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What is the missing polynomial?

german

Answer:

C. 40-4x-12x^2

Step-by-step explanation:

very simple

? – (20 – 4x – 5x2) = 20 – 7x2, so ? = 20 – 7x2 + (20 – 4x – 5x2)

? = 20 – 7x2 + (20 – 4x – 5x2)=20-7x²+20-4x-5x²=40-12x²-4x

7 0

3 years ago

Read 2 more answers

30 POINTS IF SOMEONE ANSWERS CORRECTLY (MATH)

Alekssandra [29.7K]

a. factor A = x^2 -30x + 225 = (x - 15)(x - 15)

side length =<u> (x - 15)</u>

b. add (x - 15) four times = 4(x - 15) =<u> 4x - 60</u>

8 0

2 years ago

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Solve x/2 + y/3 = 1 for x

denis23 [38]

Answer:

$x$ = - $\frac{2y}{3}$ + 2

Step-by-step explanation:

Solve for $x$ by simplifying both sides of the equation , isolating the variable.

Hope this helped you, Also please let me know if anything is unclear or wrong!

4 0

3 years ago

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In two or three sentences explain how you would solve for the real solutions of the following equation: please help asap!!

g100num [7]

the real solutions for the equation $x^{3}=-64$ are -

$x=4,2+-2\sqrt{3i}$

Step-by-step explanation:

$x^{3}$ = $- 64$

$x^{3} +64$ = 0

We can write 64 as $4^{3}$

$x^{3}$ + $4^{3}$ = 0

using the identity ( $x^{3}+y^{3} = (x+y)(x^{2} -xy+y^{2} )$ )

we get,

= $(x+4) (x^{2} -x*4+4^{2} )$

= $(x+4)(x^{2} -4x+16)$ ....................(1)

solving the quadratic equation ,

$x^{2} -4x+16$ =0

solutions of this quadratic equation can be obtained by

$x=-b +- \sqrt{b^{2}-4ac } /2a$

let use y for factors

$x=-(-4x)+-\sqrt{(-4x^{2} )-4*x^{2} *16} / 2*x^{2}$

$x=4x+-\sqrt{16x^{2} -64x^{2} } /2x^{2}$

$x=4+-\sqrt{16-64}/2$

$x=4+-4\sqrt{3i} /2$

<u /> $x=2+-2\sqrt{3i}$ ..................(2)

from the equation 1 we have,

$x-4=0$

which gives solution $x=4$

and from equation 2 we got $x=2+-2\sqrt{3i}$

so the real solutions for the equation $x^{3}=-64$ are -

$x=4,2+-2\sqrt{3i}$

3 0

3 years ago

Max has 5 apples he gives away 2 How many apples does he have left

LUCKY_DIMON [66]

If max starts with 5 apples and then gives away too hes subtracting 2 so he has 3 left
equation: 5-2=3

4 0

3 years ago