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2 years ago

Partially factored form: f(x) = (x − 3)(x 3)(x2− 4x 5) use the quadratic formula to identify the zeroes of x2 − 4x 5. x =

Mathematics

1 answer:

Dimas [21]2 years ago

8 0

Answer:

2 ± i

Step-by-step explanation:

by 5, I assume you mean +5

x² - 4x + 5 = 0

x = (-b±(√(b²-4ac)) / 2a

x = (4 ± (√(16 - 20)) / 2

x = (4 ± (√(-4)) / 2

√-4 = √4√-1 which is 2i

x = (4 ± 2i) / 2

x = 2 ± i

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yuradex [85]

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4 years ago

Which sentence explains the correct first step in the solution of this equation? 4(x−3)=94x-3=9 CLEAR CHECK Add 22 to both sides

SOVA2 [1]

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3 years ago

a debt of $6000 due today is to be settled by two payments due three months from now and 9 months from now respectively . what i

Leto [7]

Answer:

$4194.39

Step-by-step explanation:

Two equal payments one after 3 months and another after 9 months respectively are used to settle a debt of $6000 due today.

We have to calculate the size of the equal payments at 6% compounded quarterly.

Let the amount be $x.

So, $(x + x) = $2x will be the total sum after interest.

Therefore, $6000 will be charged for 3 months at 6% interest quarterly and $(6000 - x) will be charged for (9 - 3) = 6 months at 6% interest quarterly.

The equation we can write is

$6000 (1 + \frac{6}{100} )^{1} + (6000 - x)(1 + \frac{6}{100} )^{2} = 2x$

⇒ 6000 × 1.06 + ( 6000 - x)(1.1236) = 2x

⇒ 3.1236x = 6000 × 2.1836

⇒ x = $4194.39 (Answer)

4 0

4 years ago

HELP PLEASE WITH PART A AND B!!!!!

Elden [556K]

<h2>a. Answer:</h2>

For this question we'll use the following method:

1. Let's subtract old value from new value

185$-160$ = -25$

The negative value implies that the price has decreased

2. Divide the result by the old value

25$/185$ = 0,1351

3. Convert this value to percentage:

0,1351 x 100 = 13,51%

Finally, by rounding to the nearest tenth:

13,5%

That means 13,5% decrease

<h2 /><h2>b. Answer:</h2>

1. Let's subtract old value from new value

77$-56$ = 21$

The positive value implies that the price has increased

2. Divide the result by the old value

21$/77$ = 0,2727

3. Convert this value to percentage:

0,2727 x 100 = 27,3%

Finally, by rounding to the nearest tenth:

27,3%

That means 27,3% increase

8 0

3 years ago

Help pls!!!!!!!!!!!!!!!!!!!!!!!

tester [92]

Answer:

x = -6

Step-by-step explanation:

50+x+46=90

x=90-50-46

x= -6

5 0

3 years ago