Can someone simplify these? U don't need to do all of them but simplify maybe 3 at a time. it would be great if someone was dedicated enough to simplify all of them
1. Parts
a. 1/12
b. 9/12
c. 5/12
2. Parts
3/60
47/60
30/60
3. x=75
4. x=60
5. Parts
a. 76
b. 56
c. 4/6
6. Parts
a. 8/50
b. 42/50
C. 32/50
7. x=133 (rounded)
8. x=144
9. Parts
a. 13/52
b. 26/52
C. 39/52
10. Parts
a. 5/30
b. 13/30
c. 27/30
11. x=125
12. x=200

it shoild be o

step-by-step explanation:

do it yourself this is easy

step-by-step explanation:

the value of x is 9 ⇒ answer b

step-by-step explanation:

* we can solve this problem using cosine and sine rule

- in δ abc

∵ ab = 36 , bc = 28 , ac = 16

- lets find the measure of angle b using the cosine rule

∵ cos b = [ab² + bc² - ac²]/2(ab)(bc)

∴ cos b = [36² + 28² - 16²]/2(36)(28)

∴ cos b = 19/21

∴ m∠b = cos^-1(19/21) ≅ 25°

- lets find the measure of angle a using the sine rule

∵ sina/bc = sinb/ac = sinc/ab

∴ sina/28 = sin25°/16 ⇒ by using cross multiplication

∴ sina = 28 × sin25°/16

∴ sina = 0.7396

∴ m∠a = sin^-1(0.7396) ≅ 48°

- from the figure m∠abd = m∠dbc

∵ m∠abc = 25°

∴ m∠abd = 25°/2 = 12.5°

- in δabd

∵ m∠a = 48° , m∠abd = 12.5°

∵ the sum of the measures of the interior angles of any δ is 180°

∴ m∠adb = 180° - (48° + 12.5°) = 119.5°

∵ ab = 36

∵ ad = x

- use the sine rule to find x

∵ sin∠adb/ab = sin∠abd/x

∴ sin119.5°/36 = sin12.5°/x ⇒ by using cross multiplication

∴ x = 36 × sin12.5°/sin119.5° = 8.95 ≅ 9

* the value of x is 9

$25 becasue a 10 increase would make it from 80 to 50