<h2>Answer: The perimeter of angle ABC = 61.911 Step-by-step explanation: Since we are given two angles and the length of one side, we apply the SINE RULE Sine Rule = sinA / a = sinB / b = sinC / c where A, B, C are the angles of the triangle
AND
a, b and c are the length of the sides of the triangle. BUT FIRST, lets get the value for the missing angle CAB Sum of angles of a triangle = 180°
angle CAB = 180° - (40° + 49° )
angle CAB = 180° - 89
CAB = 91° To get the PERIMETER of ΔABC, we must get the length of all the three sides of the triangle using THE SINE RULE sin49° / 19.5 = sin 40° / AB = sin91° / CB 0.755/19.5 = 0.643 / AB
Cross multiplying
AB * 0.755 = 0.643 * 19.5
AB = 12.539 / 0.755
AB = 16.608
LETS SOLVE FOR CB
sin49° / 19.5 = sin91° / CB
CB * sin49° = 19.5 * sin91°
CB * 0.755 = 19.5 * 0.999
CB = 19.481 / 0.755
CB = 25.803 Therefore, AC = 19.5
AB = 16.608
CB = 25.803 The perimeter of ΔABC equals to the sum of AC, AB, CB
= 19.5 + 16.608 + 25.803
= 61.911.</h2>
<h2>A can complete the work in 7*6 hrs = 42 hrs.
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</h2><h2>A can complete in 1 hr = 1/42 part.
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</h2><h2>B can complete the work in 7*8 hr = 56 hrs.
</h2><h2>
</h2><h2>A&B together do in 1 hr = 1/42 + 1/56 = 7/168 = 1/24 part. So they will do in 8 hrs = 8*1/24 = 1/3 part.
</h2><h2>
</h2><h2>Hence they need 1÷1/3 = 3 days to complete the work.</h2>
Answer:
so just successive powers of 2
Step-by-step explanation:
1, 3, 7, 15, 31, 63, _? Add successive powers of 2 to the number: 1+2=3; 3+4=7; 7+8=15; 15+16=31; 31+32=63; 63+64=127.
Answer:
2/11
Step-by-step explanation:
6/33 simplified to lowest terms is 2/11.
Answer:
-3=log base 4 1/64
Step-by-step explanation:
This was hard to write because you cant do base on keyboard.
