10) If ten is added to four times a certain number, the sum is four less than five times the number. Find the number.​

x = 14

Step-by-step explanation:

let the number be x.

now,

Given that,

4x + 10 = 5x - 4

moving all x terms to the LHS and the constants to the RHS

4x - 5x = -4 - 10

-x = -14

dividing both sides by -1

x = 14

∠acb = 8°

step-by-step explanation:

∠xba lies on the circle and is half the measure of the intercepted arc ax

hence

measure of arc ax = 2 × 42° = 84°

∠acb is outside the circle and is

∠acb = (arcab - arcax ), hence

∠acb = 0.5 (100 - 84) = 0.5 × 16° = 8°

the final price would be 29.6925

step-by-step explanation:

39.59 minus 25% equals 29.6925