<span>The x in this problem represents multiplication, or finding the product of the two numbers. In this case, this problem represents six multiplied nine times, or adding the number six nine times. So the number six added to the number six a total of nine times is fifty-four.</span>
Answer:
D 1.44
Step-by-step explanation:
the answer is the last one 1.44
W= width
l= length= 2w-3
Area= length * width
A= lw
substitute l=2w-3 for l
54= (2w-3)(w)
54= 2w^2 - 3w
subtract 54 from both sides
0= 2w^2 - 3w - 54
factor the polynomial
0= (2w + 9)(w - 6)
Set each set of parentheses equal
to 0 and solve for width.
0=2w+9
-9=2w
-4.5= w NEGATIVE VALUE
0=w-6
6 cm=w
-4.5 is not the answer because it has a negative value. You cannot have a negative side of a photograph. So substitute 6 in to find length.
length= 2w-3
l= 2(6)-3
l= 12-3
l= 9 cm
CHECK:
w= 6cm
l= 9cm
Area= length * width
54= 6*9
54= 54
ANSWER: width= 6cm; length= 9cm
Hope this helps! :)
Avg speed = total distance /total time
360/9 = 40
The avg rate of the car is 40 mph
Answer:
Step-by-step explanation:
Each time Kristine gets paid, she spends $20 and saves the rest.
Let the amount Kristine earns is represented by x.
Let the amount she saves is represented by y.
The equation forms:
So, the graph demonstrating this will be the answer.
