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Juli2301 [7.4K]

2 years ago

9

Solve for x:

} = 9" alt="(x - 5)^{2} = 9" align="absmiddle" class="latex-formula">

2 answers:

Valentin [98]2 years ago

5 0

X-5=3 as the square root of 9 is 3
X=8 plus 5
Hope this helps

Sedaia [141]2 years ago

3 0

Answer:

Step-by-step explanation:

(x-5)^2=9

(x-5)(x-5)=9

x^2-10x+25=9

x^2-10x+16=0

(x-8)(x-2)

x=8,2

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Answer:

$f(x)=x^4-9x^2-50x-150$

Step-by-step explanation:

Let f(x) be the polynomial function of minimum degree with real coefficients whose zeros are 5, -3, and -1 + 3i be f(x).

By the complex conjugate property of polynomials, -1-3i is also a root of this polynomial.

Therefore the polynomial in factored form is $f(x)=(x-5)(x+3)(x-(-1+3i))(x-(-1+3i))$

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2 years ago

Algebra 2 - Grade 11

saveliy_v [14]

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2 years ago

Machine A produces bolts at a uniform rate of 120 every 40 seconds, and Machine B produces bolts at a uniform rate of 100 every

Nutka1998 [239]

Answer:

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Step-by-step explanation:

Hi there!

In order to answer this question, first we need to know how many bolts per second are produced by each machine, this can be known by dividing the number of bolts by the time it takes.

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$A = \frac{120 bolts}{40 s}= 3 \frac{bolts}{s}$

For machine B:

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So, if the two machines run simultaneously, we will have a rate of prodcution of bolts equal to the sum of both:

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Now, we need to know how much time it will take to producee 200 bolts, to find this out we need to divide the amount of bolts by the production rate:

$t = \frac{bolts}{ProductionRate}= \frac{200 bolts}{8 \frac{bolts}{s} }$

The <em>bolts</em> unit cancell each other and we are left with <em>seconds</em>

$t = \frac{200}{8} s = 25 s$

So it will take 25 seconds to produce 200 bolts with machine A and B running simultaneously.

Greetings!

4 0

3 years ago

Read 2 more answers