Answer:
Option (3)
Step-by-step explanation:
By applying cosine rule in the triangle ABC,
BC² = AC² + AB² - 2(AC)(AB)cosA
5² = 3² + 7²- 2(3)(7)cosA
25 = 9 + 49 - 42cos(A)
25 = 58 - 42cos(A)
cos(A) = 
A = 
A = 38.21°
A ≈ 38°
Option (3) will be the correct option.
Answer:
your answer is A
Step-by-step explanation:
:)
Answer:
$26.507
Step-by-step explanation:
Add
Answer:
497
Step-by-step explanation:
(8 x 8 x 8) -( 9 x 2) + 3
512 - 18 + 3
Ahora que está simplificado, hay una ecuación más sencilla.
512 - 18 + 3
512 - 15 = 497
¡Espero que te ayude y que tengas un gran día!
7x+2y=2
steps:
y+21=-7/2x(x-6)
y+21=-7/2x+21
y=-7/2x+21-21
y=-7/2x
7/2x+y=0
2(7/2x+y=0)
7x+2y=2
