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Scilla [17]
4 years ago
14

I am currently reviewing but I’m stuck.. help ?

Mathematics
1 answer:
Wewaii [24]4 years ago
8 0
<h3>Answer:</h3>

<em>It would be </em><u><em>Choice A</em></u><em>, or </em><u><em>f(x) = (3x-5)(2x-1)</em></u>

<h3>Step-by-step explanation:</h3>

You would need to factor out the equation to do this. Firstly, ask yourself which two numbers add up to -13 and multiply to 30?

<u>You would get the numbers -3 and -30.</u>

With this, Split -13x in the equation f(x)=6x² -13x+5 as the sum of -3x and -10x.

f(x)=6x² -13x+5 ---> 6x²-3x -10x +5

Next, factor out common terms in the first two terms, then in the last two terms. Do this by finding the greatest common factor or (GCF) in each term pair.

6x²-3x -10x +5 ---> 3x(2x−1) −5(2x−1)

Then, factor out the the common term 2x-1.

3x(2x−1) −5(2x−1) ---> (2x-1)(3x-5)

(2x-1)(3x-5) and (3x-5)(2x-1) are both answers to the equation, it doesn't matter which order the term pairs are in.

<em>***You can have the term pairs in either order due to the communicative property. </em>

<u><em>When checking your answers, this would be</em></u><u><em> Choice A</em></u><u><em> as your final answer</em></u>

<u><em>f(x)= (3x-5)(2x-1)</em></u><u><em>.</em></u>

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Can anyone explain how to find surface area? BRAINLIEST FOR BEST EXPLAINTION!
Wittaler [7]
Surface Area of a Cube = 6 a 2

(a is the length of the side of each edge of the cube)

In words, the surface area of a cube is the area of the six squares that cover it. The area of one of them is a*a, or a 2 . Since these are all the same, you can multiply one of them by six, so the surface area of a cube is 6 times one of the sides squared.



Surface Area of a Rectangular Prism = 2ab + 2bc + 2ac
(a, b, and c are the lengths of the 3 sides)

In words, the surface area of a rectangular prism is the area of the six rectangles that cover it. But we don't have to figure out all six because we know that the top and bottom are the same, the front and back are the same, and the left and right sides are the same.

The area of the top and bottom (side lengths a and c) = a*c. Since there are two of them, you get 2ac. The front and back have side lengths of b and c. The area of one of them is b*c, and there are two of them, so the surface area of those two is 2bc. The left and right side have side lengths of a and b, so the surface area of one of them is a*b. Again, there are two of them, so their combined surface area is 2ab.


Surface Area of Any Prism

(b is the shape of the ends)

Surface Area = Lateral area + Area of two ends

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Surface Area of a Sphere = 4 pi r 2

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Surface Area = Areas of top and bottom +Area of the side

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In words, the easiest way is to think of a can. The surface area is the areas of all the parts needed to cover the can. That's the top, the bottom, and the paper label that wraps around the middle.

You can find the area of the top (or the bottom). That's the formula for area of a circle (pi r2). Since there is both a top and a bottom, that gets multiplied by two.

The side is like the label of the can. If you peel it off and lay it flat it will be a rectangle. The area of a rectangle is the product of the two sides. One side is the height of the can, the other side is the perimeter of the circle, since the label wraps once around the can. So the area of the rectangle is (2 pi r)* h.

Add those two parts together and you have the formula for the surface area of a cylinder.

Surface Area = 2(pi r 2) + (2 pi r)* h


6 0
3 years ago
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