Question
15. A boat travels 30 miles upstream in 4 hours. The trip downstream takes 2.5 hours. Find the rate of the boat in still water.
33. Solve the following: (q + 2)^2 = 25
34. Solve the following: y^2 + 6y + 9 =49
39. How many real roots are there for the equation x^2 + 3x -1?
Thanks
-MC
33. Solve the following: (q + 2)^2 = 25
34. Solve the following: y^2 + 6y + 9 =49
39. How many real roots are there for the equation x^2 + 3x -1?
Thanks
-MC
Answers
15.
You have posted this same question before and it was answered for you.
You should make a log of all the questions and their times you post, and check before posting it again.
33. very simple, take √ of both sides to get
q+2 = ± 5
q = 2 ± 5 or 7 and -3
34. the left side is a perfect square so your equation becomes
(x+3)^2 = 49 and now follow the steps of #33
39. You don't have an equation, it should be
x^2 + 3x - 1 = 0 perhaps ?
If so, evaluate b^2-4ac
= 9-4(1)-1) = 13
so you would have two real roots
Please acknowledge so we know that you actually read these replies.
You have posted this same question before and it was answered for you.
You should make a log of all the questions and their times you post, and check before posting it again.
33. very simple, take √ of both sides to get
q+2 = ± 5
q = 2 ± 5 or 7 and -3
34. the left side is a perfect square so your equation becomes
(x+3)^2 = 49 and now follow the steps of #33
39. You don't have an equation, it should be
x^2 + 3x - 1 = 0 perhaps ?
If so, evaluate b^2-4ac
= 9-4(1)-1) = 13
so you would have two real roots
Please acknowledge so we know that you actually read these replies.
Thank you for your help!
-MC
-MC
welcome
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