3 years ago

Help plz plz plz plz plz plz plz

Mathematics

1 answer:

Umnica [9.8K]3 years ago

5 0

63 and 5/8 should be your answer hope this helped :)

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Please help with this Math Question...

Nataly [62]

Answer: A

<u>Step-by-step explanation:</u>

f(x) = x³ + 4x² + 7x + 6

possible rational roots are ±{1, 2, 3, 6}

Try x = -2

-2 | 1 4 7 6

1 2 3 0 ← remainder is 0 so x = -2 is a root ⇒ (x + 2) = 0

The factored polynomial x² + 2x + 3 = 0 is not factorable so use the quadratic formula to find the roots.

a=1, b=2, c=3

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

$x=\dfrac{-(2)\pm\sqrt{(2)^2-4(1)(3)} }{2(1)}$

$x=\dfrac{-2\pm\sqrt{4-12} }{2}$

$x=\dfrac{-2\pm\sqrt{-8} }{2}$

$x=\dfrac{-2\pm2i\sqrt{2}}{2}$

$x = -1 \pm i\sqrt{2}$

$x = -1 + i\sqrt{2}$ $x = -1 - i\sqrt{2}$

$x - (-1 + i\sqrt{2})=0$ $x - (-1 - i\sqrt{2})=0$

The factors are:

$(x - 2)[x - (-1 + i\sqrt{2})][x - (-1 - i\sqrt{2})]$

5 0

3 years ago

There are 6 blades on each windmill. How many total blades are on 7 windmills? Use a five fact to solve

Serggg [28]

Answer:

42 Blades

Step-by-step explanation:

So 6 blades on each windmill

6=1 Windmill

so 7 windmills

so do

7 times 6 = 42 Blades

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3 years ago

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How many ounces are in 31/2 pounds and 2 ounces

Cloud [144]

I believe it’s 250 ounces

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3 years ago

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Hello, please help me out on this, I really need help (:

Nadya [2.5K]

15 tenths 3 ones

total of 153

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2 years ago

They or both correct

yarga [219]

Answer:

wut.

Step-by-step explanation:

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3 years ago