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dusya [7]
3 years ago
9

Round to the nearest angle. Plssss help:)

Mathematics
1 answer:
katovenus [111]3 years ago
4 0
A^2+ 12^2 = 15^2
a^2 + 144 = 225
225 - 144 = 81
square root of 81 = 9
a = 9

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You people in the Algebra 1 course for high school, Are you guys ready for the exams next week? I'm definitely not. Anyway, A ba
Anvisha [2.4K]

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I think that it D

Step-by-step explanation:

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2 years ago
A rectangular field with perimeter of 80m is to have an area of at least 380m² . Describe the possible lengths and of the field.
Kryger [21]

let \: x \: be \: the \: length \\ let \: y \: be \: the \: width

perimeter = 2x + 2y \\ area = xy

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40y - y {}^{2}  = 380 \\ y {}^{2}  - 40y + 380 = 0 \\  y {}^{2}  - 40y + 400 = 20 \\ (y - 20) {}^{2}  = 20 \\ y  - 20 =± \sqrt{20}  \\ y_{1}=20-√20≈15.52786\\ y_{2}=20+√20≈24.4721

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2 years ago
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kolezko [41]
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3 0
2 years ago
Read 2 more answers
J and M are base angles of isosceles trapezoid JKLM. If mJ = 20x + 9, and mM = 14x + 15, find mK.
Rainbow [258]
20x + 9 = 14x + 15 
<span>6x = 6 </span>
<span>x = 1 </span>

<span> So base angles are 20 + 9 means 29 degrees. To calculate the m of  angle k, subtract 29 from 180: </span>

<span>180 - 29 = 151 degrees.
hope it helps</span>
7 0
3 years ago
Read 2 more answers
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