Answer:
17
Step-by-step explanation:
The expression of interest is the difference of the two given expressions.
(-4x +6y) -(-2x -7y) = (9) -(-8)
-2x +13y = 17
The value is 17.
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<em>Additional comment</em>
You could go to the trouble to solve the two equations for x and y, then compute the value of the expression you want. As we saw above, that is not necessary.
The first step in problem solving is always "look at the given information and how it relates to what you are asked." A little time spent doing that can save a lot of effort in the actual problem solving process.
Answer:
The answer is A
Step-by-step explanation:
Because if you plug the equation into a calculator you will get -14 and that will be going in the same direction which is this way >
Hope this helps
Answer:
The value of y s 2.5
Step-by-step explanation:
Vertical angles are always equal to one another. In this case, we can find the angles by setting the two values equal and solving algebraically.
2y + 5 = 4y
5 = 2y
2.5 = y
Surface area is the total area of the 2d cutout you have shown, because if folded it would be the area of the surface. Remember that each side of a rectangle has the same value on the other side. For example, where "2ft" is placed on the far left of the diagram, the side just to the right of it would also be 2ft. Once you have these values all written down, you can evaluate the area of each individual box within the entire diagram by multiplying the width by height. Once you have the area of each individual box, add all the area values together to find the surface area.