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Rudik [331]
4 years ago
8

How many zeros are in -5x(x-3)(x^2-16)

Mathematics
2 answers:
il63 [147K]4 years ago
7 0
This is a fourth degree polynomial, so by the fundamental theorem of algebra, there are four zeroes, whether they are complex or real.

The expression can be rational factorized into
-5x(x-3)(x+4)(x-4), so all four factors (hence zeroes) are real.

Answer: There are four real zeroes in <span>-5x(x-3)(x^2-16)</span>
soldier1979 [14.2K]4 years ago
3 0
Count the number of times x is used as a factor of this polynomial.  I count 4.  Thus, this expression will have 4 zeros.
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How much is a 15% tip for a meal costing $18? A. $1.20 B. $1.50 C. $2.70 D. $3.30
Artyom0805 [142]
The correct answer is C because fifteen percent of eighteen is 2.7 

Hope this helped :)
3 0
3 years ago
Read 2 more answers
What is the length of the segment connecting the points (−9, 3) and (−9, −2)?
Stels [109]
It is 5 units


because -9,3 is  up and -9,-2 is down 
5

6 0
3 years ago
Jordan invested $800 in a savings account. The interest rate is 6% per year. Find the simple interest earned in 3 years. Then fi
ExtremeBDS [4]

Answer:

$944

Step-by-step explanation:

<h3>Interest=principle*rate*time (in years)</h3><h3>I=prt</h3>

<em>Principle=800</em>

<em>Rate=0.06 (6%)</em>

<em>Time=3</em>

<em>800*0.06*3= 144</em>

Total

Principle+Interest= Total

800+144=944

7 0
3 years ago
Transform x2 + 6x + 8 = 0 into the form (x − p)2 = q?
liraira [26]
So hmmm x²+6x+8=0

alrite.. let's do some grouping now
( x² + 6x + [?]²) + 8 = 0

notice above, we have a missing fellow in order to get a perfect square trinomial... hmm who would that be?

let's take a peek at the middle guy of the trinomial.. 6x.. hmmm let's factor it, 2*3*x, wait a minute!  2 * 3 * x... we already have x² on the left-side, since the middle term is just 2 * the square root of the other two terms, that means that the guy on the right, our missing guy must be "3"

alrite, let's add 3² then, however, bear in mind that, all we're doing is borrowing from our very good friend Mr Zero, 0

so if we add 3², we also have to subtract 3², let's do so

(x² + 6x +3² - 3²) + 8 = 0

(x² + 6x +3²) + 8 - 3² = 0

(x+3)²=3² - 8

(x+3)² = 1
5 0
4 years ago
Read 2 more answers
A pair of pants cost 50% more than a tie. A shirt cost 25% more than the same tie. By what percentage is the cost of the pair of
Lisa [10]

<u>Answer</u>

20%


<u>Explanation</u>

let the cost of tie = x

Then cost of a pair of pants = (100+50)%x

                                               = 150%x

                                                 = 1.5x

The cost of shirt = (100+25)%x

                           = 125%x

                             = 1.25x

(1.5x - 1.25x)/1.25x × 100

0.25x/1.25x × 100

0.2 × 100 = 20%


8 0
4 years ago
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