Answer:
45 sq. cm.
Step-by-step explanation:
2.5*12 =30
2*6/2=6
3*6/2=9
30+6+9=45
You have to find the cos of angle A, so use the Pythagorean equation and trig laws to find the other side of the triangle created by angle A. 3^2 + x^2 = 5^2. x=4. This means cos(A) = 4/5). Make both cos (A) and cos (B) have equal denominators, and add. 148/185 + 60/185 = 208/185. This answer is correct, though it doesn’t appear to be any of the answers you wrote, so either those answers are wrong or you wrote something incorrectly in the problem.
Answer:
A. 3x^2+7x^2+2×3x ×7-84x = 3x^2+7x^2-2×3x×7
9x^2+49x^2+42x-84 x= 9x^2+49x^2-42x
9x^2+49x^2-42 = 9x^2+49 x^2-42x
verified
B.
Answer: 1 3/4 yards
Step By Step Explanation:
Write the mixed number as an improper fraction.
rewrite as multiplication
multiply by cancelling the 63 and 9 to get a 7 in the numerator then rewrite as a mixed number
Hope this helps :)
X = 1x
1x + 1x+ 2 +1x + 4 = 126
rearrange
1x+1x+1x+2+4=126
3x+6=126
3x +6=126
