Ming made a triangular picture frame out of cardboard. the sides of the frame are 6.75 in., 6.75 in., and 8.375 in. ming uses the addition below to determine the amount of string she needs to decorate the edges of the frame. which explains ming’s error? a. she should have included the decimal in 6.75 and aligned the decimal points to add 6.750 + 6.750 + 8.375 = 21.875. b. she forgot to put the decimal point in two of the numbers: 0.675 + 0.675 + 8.375 = 9.725.. c. she added 6.75 twice, and she should have only added it once: 6.75 + 8.375 = 15.125. d. she should have placed a zero placeholder after the decimal point to add 6.075 + 6.075 + 8.375 = 20.525.

something that characterises a right triangle is the fact that we may use pythagoras' theorem to find any one of its sides given that we have the length of the other two sides. here, we have the length of the hypotenuse, √(87) yd, and one other side, √(23) yd, thus we can easily find the length of the remaining side using pythagoras' theorem as defined below:

c^2 = a^2 + b^2, where c is the length of the hypotenuse, and a and b are the lengths of the other two sides.

thus, given that c = √(87) and a = √(23), we may substitute these into the formula we defined above to get:

c^2 = a^2 + b^2

(√87)^2 = (√23)^2 + b^2 (substitute c = √87 and a = √23 into the equation)

87 = 23 + b^2 (evaluate (√87)^2 = 87 and (√23)^2 = 23 - remember that the square root of a number, squared will equal that very same number)

64 = b^2 (subtract 23 from both sides)

√64 = b (take the square root of both sides)

8 = b (evaluate √64 = 8)

therefor, the length of the unknown leg in the right triangle is 8 yd (first answer).

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step-by-step explanation: