<span>5 - 3 x
= </span><span>5 - 3 (-7)
= 5 + 21
= 26</span>
Answer:
Height equation for first student is correct while that of second student is incorrect.
Step-by-step explanation:
Given that the function of height should be quadratic function.
Standard form of Quadratic function is given as,
.
Degree of quadratic function is 2.
Equation of height for first student is given as 
Since, above equation has degree 2 and equation is in quadratic form with value of b and c as 0.
Therefore, height equation for first student is correct.
Equation of height for second student is given as
.
Since the degree of above equation is 1, hence it cannot be the quadratic function. Hence second equation is not an quadratic function.
Therefore, height equation for second student is incorrect.
Answer:
x=18√2 or x=−18√2
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
9/8x^2=729
Step 2: Divide both sides by 9/8.
9/8x^2/9/8=729/9/8
x^2=648
Step 3: Take square root.
x=±√648
x=18√2 or x=−18√2
El área es 120 espero que te sirva