x-y=21 ⇒ x=y+21
x+13=2y
Substitute y+21 for x into the equation x+13=2y
So y+21+13=2y
Simplify 34=y
So Danielle is 34 years old. Plug y back in to the original equation
x-34=21
x=55
Tony is 55 years old
Answer:
Approx. 12.124 units tall
Step-by-step explanation:
Since you need to find the height (which is adjacent to the given angle), you need to use cosine (adj. over hypotenuse).
cos(30) = x/14
Multiply both sides by 14:
14cos(30) = x
Hope this helps :)
Answer:
Slope
Step-by-step explanation:
The point of slope is that it is the same the entire length of the line.
Answer:
80
Step-by-step explanation:
Insert the values or x and y into the expression.
=
= 80
Answer:
Part 1) (the missing steps in the explanation)
Part 3) (8, 4); The vertex represents the maximum profit
Part 4) x = 3.58, 0.42
Part 5) x = 6, x = 44; The zeros represent the number of monthly memberships where no profit is made
Part 6) 2(x − 7)2 + 118; x = $7
Part 7) The maximum height of the puck is 4 feet. −(x − 4)^2 + 6
Part 8) (x + 3)^2 − 4
Part 9) 2(x − 1)^2 = 4
Part 10) 8(x − 4)^2 + 592
Step-by-step explanation: