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Crazy boy [7]
3 years ago
11

PLAESE HELP ME In ΔDEF, the measure of ∠F=90°, EF = 4.9 feet, and DE = 8.3 feet. Find the measure of ∠D to the nearest degree.

Mathematics
2 answers:
Mariana [72]3 years ago
5 0

Answer:

36*

Step-by-step explanation:

ratelena [41]3 years ago
4 0

Answer:

36 degrees

Step-by-step explanation:

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The function f(x)=-(x-3)^2 +9 can be used to represent the area of a rectangle with the perimeter of 12 units, as a function of
Ivenika [448]

Maximum area of the rectangle is 9cm^{2}

<u>Explanation:</u>

<u></u>

Considering the dimensions to be in cm

f(x) = -(x-3)^{2} +9\\f(x) = -(x^{2} +9 - 6x)+9\\f(x) = -x^{2} +6x\\f'(x) = -2x+6\\-2x+6 = 0\\2x=6\\x=3cm\\\\

Putting the value of x = 3

Perimeter = 2(x+b)\\12 = 2(3+b)\\6 = 3+b\\b= 3cm

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7 0
3 years ago
Segments and angles......
olganol [36]

Answer:

QT= 12

Step-by-step explanation:

In the math RS=QR because R is the mainpoint of Qs

here given

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NOW

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SO THE ANSWER IS

ST+QS=8+4=12

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3 years ago
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