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EastWind [94]
3 years ago
6

What is the sum of StartRoot negative 2 EndRoot and StartRoot negative 18 EndRoot? 4 StartRoot 2 EndRoot 4 StartRoot 2 EndRoot i

5 StartRoot 2 EndRoot 5 StartRoot 2 EndRoot i
Mathematics
2 answers:
Nataly_w [17]3 years ago
7 0

Answer:

4 StartRoot 2 EndRoot i

Step-by-step explanation:

which means the answer is b

Sveta_85 [38]3 years ago
6 0

Adding  \sqrt{-2}\,\,and\,\,\sqrt{-18} we get 4\sqrt{2i}

Option C 4 StartRoot 2 EndRoot i is correct.

Step-by-step explanation:

We need to find the sum of: \sqrt{-2}\,\,and\,\,\sqrt{-18}

Finding sum:

\sqrt{-2}+\sqrt{-18}

\sqrt{-2} can be written as \sqrt{2}i

\sqrt{-18} can be written as \sqrt{18}i

We know 18 = 2x3x3 = 2x3^2 so,

\sqrt{2i}+\sqrt{2\times 3^2}i

\sqrt{2i}+3\sqrt{2}i

Adding like terms:

4\sqrt{2i}

So, adding  \sqrt{-2}\,\,and\,\,\sqrt{-18} we get 4\sqrt{2i}

Option C 4 StartRoot 2 EndRoot i is correct.

Keywords: Square root expressions

 Learn more about Square root expressions at:

  • brainly.com/question/4034547
  • brainly.com/question/3511750

#learnwithBrainly

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A Department of Transportation report about air travel found that nationwide, 76% of all flights are on time. Base the following
ser-zykov [4K]

Answer:

30 flights are expected to be late.

Step-by-step explanation:

Consider the provided information.

A Department of Transportation report about air travel found that nationwide, 76% of all flights are on time.

That means 100-76% = 24% of all flights are not on time.

125 randomly selected flights.

We need to find flights would you expect to be late.

Flight expect to be late E(x) = nq

Here n is 125 and the probability of late is 24 or q = 0.24

Thus substitute the respective values in the above formula.

Flight expect to be late E(x) = 125 × 0.24 = 30

Hence, the 30 flights are expected to be late.

5 0
3 years ago
Beginning with an integer $n,$ Jake goes through the following steps: $\bullet$ 1. Take the reciprocal of the starting number. $
evablogger [386]

Answer: n= 32

Jakes started with 32

Step-by-step explanation:

Let n represent the initial integer.

Step 1: take the reciprocal.

Reciprocal of n = 1/n

Step 2: double the number obtained in step 1

= 2×1/n = 2/n

Step 3: take the reciprocal of the number obtained in step 2.

Reciprocal of 2/n = n/2

Since he ended up with 16

n/2 = 16

n = 2×16 = 32

4 0
4 years ago
Read 2 more answers
ANSWER CORRECTLY FOR BRAINLIEST ASAP TY PLS ! :)
Anna [14]

Answer : 510

Step-by-step explanation:

it just is :)

6 0
3 years ago
Use the formula to factor n8 – 9
gulaghasi [49]
Hi!

The correct answer is (n^{4}+3)(n^{4}-3)
3 0
4 years ago
Multiply and combine like terms. Use^ for exponents. (2x-10)(3x-3)
agasfer [191]

Answer:

The answer is 5x - 13

Step-by-step explanation:

All we do is add the x's and the other numbers.

2 + 3 = 5 and 10 + 3 = 13

So, the equation is 5x - 13

Hope this helps! :)

6 0
3 years ago
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