b is write answers click it
30/78 simplified is 15/39
You would solve this problem by using Pythagorean Theorem. This theorem states a^2+b^2=c^2. C is ALWAYS the hypotenuse. We would have to solve for the smaller triangle first. It would look something like this.
3^2+b^2=5^2
9+b^2=25
b^2=16
b=4
Therefore, the missing side to the small triangle is 4. Now, we can solve for the hypotenuse of the bigger triangle,
4^2+7^2=c^2
16+49=c^2
65=c^2
Side z is approximately equal to 8.
In this equation the 9.1 would represent the amount the tip would have been before the adjustment is made (1.4d) for the dessert.
The equation will be
8 / 2 = 4
In the repeated subtraction since in actuality division is the larger numbers which is just subtraction.
it becomes,
8 - 2 -2 = 4
8 -2 = 6 - 2 = 4