Number 16 plz and don't answer if you don't know I'll report you

a =  5 seconds and b = 50 inches c = No, because it starts at 50 inches and only goes down after that. This means it will never be at 120 inches.

Step-by-step explanation:

A. Solve it as a quadratic equation where h = 0 (because it will be 0 inches above the water).

0 = - 16t^2 + 70t + 50

0= -2(8t^2 - 35t -25)

0= -2(t - 5)(8t + 5)

Since the amount of time has to be positive, t - 5 = 0, so t = 5 seconds

B. Substitute t = 0 into the equation.

h = -16(0)^2 + 70(0) + 50

h = 0 + 0 + 50

h = 50 inches

C. It's diving, so it's only going down and won't reach 10 feet.

the discriminant is 64 + 4*1*12 = 112

this is prime.

step-by-step explanation:

m∠cdf = 43° , m∠gdf = 114°, m∠gde = 23°, m∠edh = 23° , m∠cdh = 157°

step-by-step explanation:

since, it is given that de bisects the angle gdh ⇒ de divides the angle gdh into two equal angles.

⇒ m∠gde = m∠edh

⇒ 8·x   - 1 = 6·x + 5

⇒ x = 3

so, m∠gde = 8·x - 1 = 23°

and m∠edh = 23°

now, it is given ∠cde is an straight angle so, m∠cde = 180°

⇒ m∠cdf + m∠fdg + m∠gde = 180°

⇒ 43° + m∠fdg + 23° = 180°

⇒ m∠fdg = 114°

again, m∠cde = m∠cdh + m∠edh = 180°

m∠cdh + 23° = 180°

⇒ m∠cdh = 157°