Answer:
a=1/3
Step-by-step explanation:
from the point on the graph
x=4 and y=8
substitute them into the equation:
y=a(x-2) (2x+4)
you will get
8=a(4-2) (2(4)+4)
8=a(2) (8+4)
8=a(2) (12)
8=2a×12
8=24a
divide both sides by 24
8/24=24a/24
1/3=a or a=1/3
<span>Write an expression for the total cost of the tools.
</span>
total cost = <span>$11.79 (4) + </span>$6.65 (7)
<span>Then find the total cost.
</span>total cost = $11.79 (4) + $6.65 (7)
total cost = $47.16 + $46.55 = $93.71
The answer is C because x2 is a parabola
Answer:
x = 7
Step-by-step explanation:
The proportion is
14/6 = 21/(3x - 12) Cross Multiply
14*(3x - 12) = 6*21 Remove the brackets and combine
42x - 168 = 126 Add 168 to both sides
42x = 126 + 168
42x = 294 Divide by 42
x = 294/42
x = 7
Answer:
105 Miles.
Step-by-step explanation:
The first important thing to recognize is that 45 minutes is equal to .75 of an hour. (3/4).
Now, it's a rate * time problem.
28 Miles/Hour * 3.75 hrs = 105
