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3 years ago

I need on this asap! 39 pts!

Mathematics

1 answer:

Tomtit [17]3 years ago

5 0

11) x is greater than or equal to 0.
12) x is less than or equal to 7 or x is greater than or equal to 9
13) 2 is less than or equal to x, x is greater than or equal to 4
14) x is less than 8

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Find all the zeroes of the polynomial function f(x)=x^3-5x^2+6x-30 in you use synthetic division show all three lines of numbers

jonny [76]

Answer:

5, $i\sqrt 6$ and $-i\sqrt 6$

Step-by-step explanation:

We are given that the polynomial

$f(x)=x^3-5x^2+6x-30$

We have to find the all the zeroes of the polynomial function.

$f(x)=0$

$x^3-5x^2+6x-30=0$

$x^2(x-5)+6(x-5)=0$

$(x-5)(x^2+6)=0$

$x-5=0$

$x=5$

$x^2+6=0$

$x^2=-6$

$x=\pm\sqrt{-6}=\pm i\sqrt6$

Using $\sqrt{-1}=i$

Hence, all the zeroes of the polynomial function are

5, $i\sqrt 6$ and $-i\sqrt 6$

7 0

3 years ago

Use a number line to find the sum

gayaneshka [121]

I’m not sure of the question your asking here ?

5 0

4 years ago

The value of investments in the stock market change daily. Suppose you buy a stock for $1500. It decreases in value by 5% and th

Dmitriy789 [7]

Answer:

$1,524.75

Step-by-step explanation:

Purchase price = $1,500

Percentage decrease = 5% or 0.05 as a decimal

Amount by which the stock decreased = - (1500*0.05) = -$75

So at first, the price decrease to = $1,500 - $75 = $1,425

Secondly, the percentage increase in price = 7% or 0.07 as a decimal

Amount by which the stock increased = (1,425*0.07) = $99.75

Therefore, the price rose to = $1,425 + $99.75 = $1,524.75

New value is therefore $1,524.75

8 0

4 years ago

What is the slope of the line that passes through the points (-2, 7) and (2, -5) ?

masha68 [24]

Answer:

Step-by-step explanation:

Since the slope of a line is its gradient, we use the formula for finding gradient.

Gradient

$= \frac{change \: in \: y}{change \: in \: x } \\ \ = \frac{7 - - 5}{ - 2 - 2 } \\ = 12$

hope it helps.

7 0

3 years ago

Come answer this randomly, and get your brainliest!

xeze [42]

Answer:

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers