problem given: (-0.75x + 6) -(2.5x -1.9)
distribute: -0.75x+6 -2.5x-1.9
combine like terms: -0.75x-2.5x= -3.25x ; 1.9+6=7.6
solution: -3.25x+7.6
Answer: yes
Step-by-step explanation:
Because a poly nominal is just a four term expression
Answer:
520/3 cubic feet
Step-by-step explanation:
You can divide this figure into 2 parts for easy calculation; a pyramid and a rectangular prism. You can find the volume of the rectangular prism by multiplying together all of the side lengths. 3*4*10=120 ft^3. To calculate the volume of a pyramid, you simply need to use the formula
, which in this case is
. Adding the 120 cubic feet from earlier, you get a total of
. Hope this helps!
Answer: x= 7
Step-by-step explanation:
-2x= -14 Divide both sides by -2
x= 7
check
-2(7) = -14
-14 = -14
Hi!
So, it looks like you're doing ratios.
Let's look at 9). If the model car is 4 inches long, and 1 inch equals 4 feet, than the actual car is 16 feet long. We know this because 4x4=16.
11) is also just as simple. If 1 cm is 11 km, and the two cities are 99 km apart, then on the map they are 9 cm apart. 11x9 is 99.
13) This is a 1:2 ratio. Basically, the flagpole's shadow is half of its height. You half the man's height to get a 3 foot shadow.
And, finally, 15)- if the model is 4 inches to the real life train's 3 feet, the actual train is 120 ft long, given that the model is 40 in long. 40x3=120.
I hope this helps! :)