Answer:
exact form: -17/8
decimal form: -2.125
mixed number form: -2 1/8
Step-by-step explanation:
cmon this is freaking addition
Well you divide the 75 percent and the 18 and you will get your answer
Answer:
142
Step-by-step explanation:
This is a Total Surface Area problem.
The box has 6 faces (sides): front, back, left, right, top, bottom. They are all rectangles. Area of a rectangle is length × width.
You find the area of each face and add them all up.
see image.
TSA = 15+15+21+21+35+35
= 30+42+70
= 142 sq inches
Erica needs 142 pieces of paper to decorate her box.
D=answer i think
If im wrong im really sorry!
Answer:
(4,-1)
Step-by-step explanation:
You can solve this system of equations in a couple of different ways, but I'm going to use the elimination method. If you're solving a system of equations using elimination, you want to have one variable cancel out. In this case, we don't have to change anything because -3y and 3y will already cancel out if we add the two equations together. You can both add or subtract, but it's easiest to add in this case. The equation will be set up like this: 2x-3y=11
+ 7x+3y=25
--------------
After you add them together, you should get 9x=36, which you can solve by dividing both sides by 9. Then, you'll get x=4. This is your x-coordinate. Next, you want to get your y-coordinate, so you can substitute 4 into one of the two equations for x and solve for y. This will get you -1 for y. I'd also recommend checking your answer. Hope this was helpful! :)
