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Jlenok [28]
3 years ago
6

How does writing an equation help you solve a problem?

Mathematics
1 answer:
vredina [299]3 years ago
8 0
So you wont forget what you wrote and it helps you to figure out the problem. I hope this helps.
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If f(x) = 3x2 1 and g(x) = 1 – x, what is the value of (f –
pychu [463]
F(x) = 3x^2 + 1
g(x) = 1 - x
(f - g)(x) = 3x^2 + 1 - (1 - x) = 3x^2 + 1 - 1 + x = 3x^2 + x
(f - g)(2) = 3(2)^2 + 2 = 3(4) + 2 = 12 + 2 = 14.
4 0
3 years ago
Read 2 more answers
1. How do you determine whether a function is an inverse of another function?
-BARSIC- [3]
<h3>Answer:</h3>
  1. Find the composite of the functions
  2. x/3
  3. All the answers are correct
  4. f(x) = 2+∛(x/3)
  5. f(x) = (x+3)/2
<h3>Step-by-step explanation:</h3>

1. If f(x) and g(x) are inverse functions, then f(g(x)) = g(f(x)) = x. Finding the composite of the two functions will tell you if they are inverses.

2. To find the inverse of a function, swap x and y, then solve for y.

... x = 3y

... x/3 = y . . . . . matches f(x) = x/3

3. A function will pass the vertical line test. If its inverse is also a function, that, too, will pass the vertical line test. Since the inverse of a function is that function reflected across y=x, any inverse function that passes the vertical line test corresponds to an original function that passes the horizontal line test. (A vertical line reflected across y=x is a horizontal line.)

4. See 2.

... x = 3(y -2)³

... (x/3) = (y -2)³ . . . . divide by 3

... ∛(x/3) = y -2 . . . . .take the cube root

... 2+∛(x/3) = y . . . . .add 2

... f(x) = 2+∛(x/3) . . . . is the inverse

5. See 2.

... x = 2y -3

... x+3 = 2y . . . . . add 3

... (x+3)/2 = y . . . .divide by 2

... f(x) = (x+3)/2 . . . .  is the inverse

8 0
3 years ago
Which figures are polygons?
Triss [41]
<span>A polygon is any 2-dimensional shape formed with straight lines. Triangles, quadrilaterals, pentagons, and hexagons are all examples of polygons.</span><span> A triangle has three sides, and a quadrilateral has four sides.

-https://www.google.com.tw/search?q=Which+figures+are+polygons%3F&ie=utf-8&oe=utf-8&client=firefox-b-...
</span>
3 0
3 years ago
Read 2 more answers
Harris has r bottles. Donna has 60 more bottles
Tanya [424]

R+60= Donnas bottle number

8 0
3 years ago
Rachel works at a bookstore. On Tuesday, she sold twice as many books as she did on Monday. On Wednesday, she sold 6 fewer books
natita [175]
You have to subtract19 - 6 = 13
3 0
3 years ago
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