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anonymous
 one year ago
I have 5 questions i really need help with!!! Please help me! attached in comments
anonymous
 one year ago
I have 5 questions i really need help with!!! Please help me! attached in comments

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mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.11. Use the formula in the figure to find x dw:1436809516866:dw

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1dw:1436809633896:dw

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Almost, but keep in mind that two variables written together mean multiplication, not addition.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so 8x15= 120 and 120/6=20 correct?

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Exactly. 1 down, 4 to go.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1dw:1436809837663:dw

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Here is the rule for problem 2. dw:1436809889123:dw

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1One external segment times its entire secant equals the other external segment times its entire secant.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1dw:1436810128136:dw

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1No. Here you DO need some additions.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1The upper secant has an external segment of length 10. The entire upper secant has length 10 + 6. The lower secant has an external segment of 8. The entire lower secant has a length of 8 + x. That means: 10(10 + 6) = 8(8 + x) Yes, you are correct now.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1We need to solve this for x: 10(16) = 8(8 + x)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.096=8x because 16064=96?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so the answer is x=12

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Ready for problem 3?

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1dw:1436810571796:dw

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Use the same idea for the secant as before: the external segment times the entire secant. For the tangent, just square its length.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1dw:1436810702662:dw

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Be careful here. The right side 36 is correct bec that is 6^2. Now let's look at the left side. What is the length of the external segment?

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1dw:1436810831719:dw

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Good. What is the length of the entire secant? dw:1436810876026:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0x(2x) the entire secant is x+x which

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1You need to be careful with algebra. External segment of secant: x Entire secant: x + x = 2x Product: x(2x) = 2xx = 2x^2, not 3x

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1There is a big difference between adding x to 2x which is 3x, and multiplying x by 2x which is 2x^2.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1The equation then is: \(x(x + x) = 6^2\) \(x(2x) = 36\) \(2x^2 = 36\) Now divide both sides by 2.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1??? What is 36/2 = ???

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh! 18! I was thinking square root it

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1\(2x^2 = 36\) \(\dfrac{2x^2}{2} = \dfrac{36}{2} \)

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Good. Now we have this. Now take square root of both sides. \(x^2 = 18\)

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1dw:1436811486694:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Thank you soo much. Im afraid i have to go But you helped me a lot!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I need to take my final!

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.1Let's check on that: Is this true? \(3\sqrt 2(3\sqrt 2 + 3 \sqrt 2) = 6^2\) \(3 \sqrt 2(6 \sqrt 2) = 36\) \(18 \times 2 = 36\) \(36 = 36\) Yes, \(3 \sqrt 2\) is correct.
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