20 points! wrong answers will be reported!
isaiah sketches a model of a skateboard ramp. the model has two surfaces on which to skate, represented by sides ab and ad in the diagram.

the steepest side of the model, ab, measures 4 inches. what is the length of the other skating surface, ad?

a) 2 square root 2
b) 2 square root 3
c) 4 square root 2
d) 4 square root 3

(C)

Step-by-step explanation:

It is given that The steepest side of the model, AB, measures 4 inches, thus

From ΔABC, using the trigonometry, we have

Substituting the given value, we have

⇒

⇒

⇒

Now, from ΔACD, we have

⇒

⇒

Therefore, the length of AD will be

thus, option C is correct.

y < -3

step-by-step explanation:

-3y - 2 > 7

-3y -2 + 2 > 7+2

-3y > 9

-3y/-3 < 9/-3   (change the inequality sign when multiplying or dividing by a negative number)

y < -3

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,