Asap with all questions will give brainliest!

The answer to your question is:

a) 42√2

b) √330

c)  12√-5

Step-by-step explanation:

a)

   4√27 + 6√75

27 = 3 x 3 x 3  = 3² x 3  

75 = 3 x 5 x 5 = 3 x 5²

    4√3² 3  + 6√5²3

   4(3) √3 + 6(5) √3

   12√3 + 30√3

   42√3

b)   √6 √11 √5

    √ (6x11x5)

     √ 330

c) 6√-20

20 = 2² x 5

  6√- 2² x 5

  6(2) √-5

  12√-5

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step-by-step explanation:

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rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500