So first distribute the -.
-8= -x-4
+4 +4
-4=-x and divide -1 on both sides. This becomes x=4.
Answer:
Step-by-step explanation:
3x(-2x - 3)
-6x^2 - 9x
answer is C
Answer: option B
This is because you have to work out the range of both periods
The range is the highest number - the lowest number
Range for period 1: 92-81=11
Range for period 3:92-74=18
As you can see the range for period 3 is 7 points greater than period 1 therefore the answer is the second option ( option B)
Hope this helped
Step-by-step explanation:
The dimensions of the rectangle are two unknowns: The length "l" and the width "w"
The perimeter of a rectangle is found as P = 2*l + 2*w
We also know that the length is 5cm more than twice the width. l = 2*w + 5
These two equations gives us a system of linear equations.
P = 2*l + 2*w
l = 2*w + 5
We can use substitution to replace the "l" in the first equation with 2*w + 5
P = 2*(2*w + 5) + 2*w
P = 4*w + 10 + 2*w
P = 6*w + 10
we know the perimeter is 70
70 = 6* w + 10
subtract 10 from both sides
60 = 6* w
w = 10
Now that we know the width, we can find the length by substituting 10 for "w" in the second equation.
l = 2* 10 + 5
l = 20 +5
l = 25
the dimentions of the rectangle are 25cm x 10 cm
How many hours we they going to rent the canoe=x 6.95x
