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Leviafan [203]
3 years ago
8

Please help with this question

Mathematics
1 answer:
Assoli18 [71]3 years ago
5 0

Answer:

75°

Step-by-step explanation:

Please see attached picture for full solution.

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20 points!!! first answer gets brainliast. Don't need too much explanation thank you!​
KengaRu [80]

Answer:

The answer to your question is below

Step-by-step explanation:

2. \sqrt{-128}                Just find the prime factors of 128 and simplify

   \sqrt{-2^{7}} = \sqrt{-2^{6} 2} = 2^{3}i \sqrt{2}

   8i\sqrt{2}

3.- \sqrt{-9} + \sqrt{-16}     Get the square roots and simplify

     3i + 4i

     7i

4.- None of the choices is equal to one, because the exponents are pair.

5.- 1/3x² + 10 = 7

    1/3x² = 7 - 10

    1/3x² = -3

         x² = -3(3)

         x² = -9

         x = ±3i

8 0
3 years ago
A bank has opened a new branch and, as part of a promotion, the bank branch is offering $1,000 certificates of deposit at simple
Veseljchak [2.6K]

Answer:

option A

Step-by-step explanation:

given,                                                

the bank branch is offering $1,000 certificates of deposit.

Rate of interest per year = 4 % = 0.04                        

The bank is selling certificates with terms of 1, 2, 3, or 4 years

total amount =  A , in dollar              

time of investment = k years              

4 k% is added to the original deposit.

A = P + P r t                                      

A = P (1 + r t)                                          

A = P (1 + 0.04 k)                            

the correct answer is option A

8 0
3 years ago
Si f(x) es igual a raiz de x al cuadrado menos 16 determinar f(5),f(4),f(6),f(3)
Nadusha1986 [10]

Aplicando la función, los valores numéricos son :

f(5) = -11

f(4) = -12

f(6) = -10

f(3) = -13

La función es dada por:

f(x) = (\sqrt{x})^2 - 16  = x - 16

Para los valores numéricos, reemplazamos x, luego:

f(5) = 5 - 16 = -11

f(4) = 4 - 16 = -12

f(6) = 6 - 16 = -10

f(3) = 3 - 16 = -13

Un problema similar es dado en brainly.com/question/7037337

4 0
3 years ago
4 letters are typed, without repetition. What is the probability that all 4 will be vowels? Write your answer asa percent. Round
Marysya12 [62]

There are 26 letters in the alphabet, 5 are vowels, therefore, the probability of choosing a vowel the first time is:

\frac{5}{26},

and the second time is:

\frac{4}{25}\text{.}

Continuing with this reasoning, we get that the probabilities each time are:

\frac{5}{26},\frac{4}{25},\frac{3}{24},\frac{2}{23}\text{.}

Finally, the probability that you get all vowels is the product of the probabilities:

\frac{1}{2990}\text{.}

Writing the above result as a percentage we get:

0.033\%.

Answer:

0.033\%\text{.}

3 0
1 year ago
Please help me with this
nadezda [96]

Answer:

its 18

Step-by-step explanation:

6x3=18

4 0
3 years ago
Read 2 more answers
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