Answer:
plz mark brainliest..
Step-by-step explanation:
AC is the hypotenuse = 10
AB is side opposite to <C
<C = 30°, <B = 90°
by 30°-60°-90° theorem
side opposite to 30° is equal to half of hypotenuse
therefore,
AB = 1/2 × AC
AB = 1/2 × 10
AB = 5
therefore number 5 is answer
hope it will help you
Answer:
(1.25, - 5 )
Step-by-step explanation:
Given the 2 equations
- 4x + 3y = - 20 → (1)
4x + 2y = - 5 → (2)
Adding the 2 equations term by term will eliminate the x- term
5y = - 25 ( divide both sides by 5 )
y = - 5
Substitute y = - 5 into either of the 2 equations and solve for x
Substituting into (2)
4x + 2(- 5) = - 5, that is
4x - 10 = - 5 ( add 10 to both sides )
4x = 5 ( divide both sides by 4 )
x =
= 1.25
Solution is (1.25, - 5 )