Gina uses the function LaTeX: k\left(h\right)\:=\:\sqrt{4h\:-\:12 }k ( h ) = 4 h − 12 to model the height of a kite based on the amount of string released when the kite is flown. The variable h represents the height of the kite in feet and k(h) represents the amount of string released in feet. How how high was the kite when Gina released 20 feet of string?

68 feet

Step-by-step explanation:

Gina uses the function to model the height of a kite based on the amount of string released when the kite is flown:

k(h) = 4h − 12

Where

h represents the height of the kite in feet

k(h) represents the amount of string released in feet.

We need to find the height when Gina released 20 feet of string.

Put h = 20 in the above formula.

k(20) = 4(20) − 12

= 68 feet

So, the required height is 68 feet.

answer: 1, 3 and 5 are correct

step-by-step explanation:

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116