Math

1) The hypotenuse of an isosceles right triangle is 8 cm longer than either of its legs. Note that an isosceles right triangle is a right triangle whose legs are the same length. Find the exact length of its legs and its hypotenuse.

2) The length of a rectangle is 9 m longer than its width and the area of the rectangle is 280 m2. Find the exact dimensions of the rectangle.

3) The first leg of a right triangle is 3 cm longer than its second leg. If the hypotenuse has a length of 8 cm, find the exact lengths of the two legs

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  1. if the legs are x and the hypotenuse is h, then

    h^2 = x^2+x^2
    (x+8)^2 = 2x^2
    x^2+16x+64 = 2x^2
    x^2 - 16x - 64 = 0
    Now just use the quadratic formula

    If the width is w, then
    w(w+9) = 280

    If the shorter leg is x, then
    x^2 + (x+3)^2 = 8^2

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  2. x=8

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  3. 1.C
    2.D
    3.A
    4.C
    5.A
    6.5
    7.B
    8. x,y=1.7*2+3-1=4.5
    The drummer final position was 4.5

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  4. I got 2/8. U need to show it better.😣

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  5. What are the answers?
    I need them desperately!!!

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  6. Im 100% right :)
    BTW for question 8 I'll give you the answer for it...
    1.C 15 cm
    2.D 12. cm
    3.A Q
    4.C 10
    5.A II
    6.A (-8, -10)
    7.B 5
    8. A: (x,y) ----> (x + 1, y + 3)
    B: (-2, -5) ---> (-2 + 1, -5 + 3) = (-1, -2)
    100% right... you are welcome that I even gave you the answers lol. anyways 100% right :)no lie

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  7. thx Kaiipapa 100% right

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  8. Your welcome anytime

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  9. Yea thanks I pass it thank you so much

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  10. 100% Correct

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  11. Brainless cats...

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  12. i got 5/8 she is wrong

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  13. Yes he is!!

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  14. 1.C
    2.D
    3.A
    4.C
    5.B
    6.A
    7.A
    8.B
    9.A(x,y) ----> (x + 1, y + 3)
    B(-2, -5) ---> (-2 + 1, -5 + 3) = (-1, -2)

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  15. ME ) is correct I got a 100%

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  16. Thanks so much ME

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  17. Jiskha is the Best thanks you so much!!!!!

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  18. HMMMMMMMMMMMMMM

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  19. Me is right

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  20. Me is 100% right

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  21. me is 100% correct

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  22. ME IS 10000000% correct. THANK YOU!!!!!

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  23. I only have 8 questions tho

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  24. me is wrongggggggggggggggg!!!!!!!!!!!!!!!!!!!!!!!!!!!1

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  25. which one is correct im from connexus

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  26. me is correct for connexus

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  27. i cant help but read "me is right."
    in a caveman accent

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  28. (Add Me On Club Penguin) Yaa xD

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  29. @ME is 100% right if you are taking the quiz, lesson 9 Unit 4 rotations in the coordinate plane for 8th grade algebra. There are nine questions, the ninth being the part 2, trust me, they are 100% right.

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