4(a-2)=3(a+4)
4a-8=3a+12
a=20
Answer:
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Step-by-step explanation:
<em>Your question is incomplete without an attachment (See attachment)</em>
Required
Determine the area of the shaded part
From the attachment;
<em>Assume that the shaded portion is closed to the right;</em>
<em>Calculate the Area:</em>
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<em>Next;</em>
<em>Calculate the Area of the imaginary triangle (on the right)</em>
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<em>Lastly, calculate the Area of the Shaded Part</em>
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<em>Hence,</em>
<em>The area of the shaded part is 72in²</em>
Answer:
155°
Step-by-step explanation:
The obtuse angle of the large (outside) triangle is the supplement of 60°, so is ...
180° -60° = 120°
The angle x is the sum of the remote interior angles of that large triangle:
x = 35° +120° = 155°
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<em>Check</em>
The other acute angle in the smaller (left) right triangle is 90° -35° = 55°. Then the top acute angle in the larger (bottom, right) right triangle is ...
180° -55° -60° = 65°
The other acute angle in that triangle is 90° -65° = 25°. It is supplementary to angle x. Hence angle x is 180° -25° = 155°, as above. (Note that x is also the sum of 90° and 65°, the remote interior angles of the nearest right triangle to x.)
Answer:
8 ft², 21.8ft², and 11.2ft²
Step-by-step explanation:
