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Vinvika [58]
4 years ago
7

What is the inverse of the function f(x) = 2x – 10?

Mathematics
1 answer:
GREYUIT [131]4 years ago
5 0
Replace f(x) with y and proceed to make x the subject:
y=2x-10
y+10=2x
y+10/2=x
Now swap y with x and replace the isolated x with f(x), so
{f}^{ - 1}(x) =  \frac{y + 10}{2}
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There are two equilateral triangles of different sizes. The perimeter of the larger equilateral triangle is 3 times the perimete
weeeeeb [17]
The measures of the smaller Triangle would be 12 meter.
Because if you would triple it and divide by 3 then you would get 12.
Hope I helped ;)
p.s. please give brainliest!
6 0
3 years ago
An equilateral triangle has perimeter P. The length of one side is p/3 which expression is equivalent to the length of one side?
LekaFEV [45]

Answer:

Your answer is C

Step-by-step explanation:

3 0
3 years ago
Use the discriminant to describe the roots of each equation. Then select the best description.
Paha777 [63]

The <em>quadratic</em> equation 3 · x² + 7 · x - 2 = 0 has a <em>positive</em> discriminant. Thus, the expression has two <em>distinct real</em> roots (<em>real</em> and <em>irrational</em> roots).

<h3>How to determine the characteristics of the roots of a quadratic equation by discriminant</h3>

Herein we have a <em>quadratic</em> equation of the form a · x² + b · x + c = 0, whose discriminant is:

d = b² - 4 · a · c     (1)

There are three possibilities:

  1. d < 0 - <em>conjugated complex</em> roots.
  2. d = 0 - <em>equal real</em> roots (real and rational root).
  3. d > 0 - <em>different real</em> roots (real and irrational root).

If we know that a = 3, b = 7 and c = - 2, then the discriminant is:

d = 7² - 4 · (3) · (- 2)

d = 49 + 24

d = 73

The <em>quadratic</em> equation 3 · x² + 7 · x - 2 = 0 has a <em>positive</em> discriminant. Thus, the expression has two <em>distinct real</em> roots (<em>real</em> and <em>irrational</em> roots).

To learn more on quadratic equations: brainly.com/question/2263981

#SPJ1

7 0
3 years ago
What is the measure of x
OleMash [197]

Answer:

42

Step-by-step explanation:

Angles on a line add up to 180 so

180 - 92 = 88

Thats angle y

Now the angles in a triangle add up to 180 so

50+88+x = 180

138 + x = 180

x = 42

5 0
3 years ago
Read 2 more answers
How do i solve 2(x-5)+3x=15
Savatey [412]
The answer is x=5 do u need steps?
5 0
3 years ago
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