Answer:
1. y = 12
x = 7.9
2. AB = 5
AC = 5√3
Step-by-step explanation:
1. If you call the straight up line of both triangles is z, then
(9 + 7)^2 = y^2 + z^2
=> z^2 = 256 - y^2
x^2 + 7^2 = z^2
=> z^2 = x^2 + 49
so 256 - y^2 = x^2 + 49
x^2 = 207 - y^2
for the left smaller triangle: 9^2 + x^2 = y^2
y^2 = x^2 + 81
Substitute:
y^2 = (207 - y^2) + 81
2y^2 = 288
y^2 = 144
y = 12
x^2 = 207 - y^2 = 207 - 144 = 63
x = 7.9
2. Sin(30) = AB/BC
=> AB = BC x sin(30) = 10 x 0.5 = 5
Cos(30) = AC/BC
=> AC = BC x cos(30) = 10 x √3/2 = 5√3
y=7 because if you simplify it is y =7.
Answer:No
Step-by-step explanation:
Imagine 3 tablespoons they are big.
Answer:
d
Step-by-step explanation:
Given
- x - 9 = - 27 ( add 9 to both sides )
- x = - 18 ( multiply both sides by 2 to clear the fraction )
- 3x = - 36 ( divide both sides by - 3 )
x = 12 → d