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3 years ago

Am i right yes or no

Mathematics

2 answers:

Sindrei [870]3 years ago

5 0

Answer:

All three are correct.

Step-by-step explanation:

top left one white

(x + 1 + i)( (x + 1 - i)

(x + 1)^2 - i^2

x^2 + 2x + 1 - i^2

x^2 + 2x + 1 + 1

x^2 + 2x + 2 You have this one correct.

Middle White one

(x - 2)^2 - (2i)^2

x^2 - 4x + 4 - 4*i^2

x^2 - 4x + 4 - 4(-1)

x^2 - 4x + 4 + 4

x^2 - 4x + 8 This one is also correct

Bottom White One

(x + 2i)(x - 2i)

x^2 + 2ix - 2ix - 4i^2

x^2 - 4(i^2)

x^2 - 4(-1)

x^2 + 4 This is correct. But what are all the left overs for? Is there more to the question.

laila [671]3 years ago

3 0

Yes for the first and last the middle one should also be x^2+4

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3 years ago

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3 years ago

Please answer this Yall

lora16 [44]

I believe the answer would be b^4.

Explanation:
Use Quotient Rule: x^a/x^b=x^a-b
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Then Simplify 10-6 to 4
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3 years ago

(3Q) Find the amplitude and period of f(t)= -tan.0t

Vanyuwa [196]

Answer:

It has no amplitud and the period is 5pi/2

Step-by-step explanation:

Given a function of the following type:

f(t) = AtanB(t + C)

The function has no amplitud, given that it doesn't have maximum or minimum value. And the period is given by: pi/B

In this case, we have f(t)= -tan0.4t. Then:

B = 0.4

⇒ Period = pi/0.4 = 5pi/2

Therefore, the answer is: It has no amplitud and the period is 5pi/2

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3 years ago

It take 10 road workers 5 days to complete a road repair when working 2 hours a day.Working at the same Pace, how many days will

ludmilkaskok [199]

Answer:

The workers will need 10 days to finish the job.

Step-by-step explanation:

To solve this question we can use a compound rule of three. We have:

10 road workers -> 5 days -> 2h/day

2 road workers -> x days -> 5h/days

The first thing we should do is analyze how the proportions between the variables work, if they're inversely or directly proportional. If we raise the number of workers we expect that the amount of days needed to finish the job lowers and if we raise the number of hours worked in a day we expect that the workers would need less days to finish the job. So we need to invert the fractions that are inversely proportional to the amount of days worked, then we have:

2 -> 5 -> 5

10-> x -> 2

x = (5*2*10)/(2*5) = 100/10 = 10 days

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3 years ago