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Basile [38]
3 years ago
9

Let f(x)=2x-6. Solve f^-1(x) when x=2 -5 4 -2 7

Mathematics
1 answer:
ladessa [460]3 years ago
6 0

Answer:

4.

Step-by-step explanation:

f^-1(x) is the inverse of f(x). That means that f(x) = 2x - 6 becomes...

x = 2y - 6

2y - 6 = x

2y = x + 6

y = 1/2x + 3.

When x = 2...

y = 1/2(2) + 3

= 1 + 3

= 4.

Hope this helps!

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\sqrt{363} - 3 \sqrt{27} =   \sqrt{3 * 11 * 11} - 3 \sqrt{3*3*3} =  11\sqrt{3} - 9 \sqrt{3} =  2\sqrt{3}

7 0
4 years ago
PLEASE HELP ME, i'll mark brainlist (moderators: STOP DELETING MY STUFF BROS)
weeeeeb [17]

Answer:

Both angles are 51°

Step-by-step explanation:

By the Vertical Angles Theorem, both angles are congruent.

Step 1: Set up equation

68 - x = 3x

Step 2: Solve for <em>x</em>

68 = 4x

x = 17

Step 3: Find angles

68 - 17 = 51°

5 0
4 years ago
Read 2 more answers
if one angle of parallelogram is four times greater than the othe. find of a parallelogram? *Short ans please*​
enyata [817]

Answer:

144°, 144°, 36°, 36°.

Step-by-step explanation:

Take shorter angle = x

Then the bigger angle = 4x (4 times the other angle)

In a parallelogram, there are 4 angles. Also, in a parallelogram opposite angles are equal to each other.

So,

1 angle = x

2 angle = 4x

3 angle = x

4 angle = 4x

The sum of all 4 angles in a parallelogram = 360°. So,

4x + x + 4x + x = 360°

10x = 360°

x = 360/10

x° = 36°

4x = 36 × 4 = 144°

Angles in the parallelogram = 144°, 144°, 36°, 36°.

Hope it helps ⚜

7 0
2 years ago
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Which statement most reasonably explains the hours 0 texts were sent
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I think its the third one sorry if I got it wrong I tried my best

5 0
3 years ago
Profit, P(r), is the difference between revenue, R(r), and cost, C(r), so P(r) = R(r) - C(r) Which expression represents P(r), i
GuDViN [60]

The expression that represent the profit is given by P(r) = r⁴ - 3r³ - r² - 4

<h3>What is an equation? </h3>

An equation is an expression that shows the relationship between two or more numbers and variables. An independent variable is a variable that does not depend on other variables while a dependent variable is a variable that depends on other variables.

Profit is the difference between revenue and cost. Given that:

R(r) = 2r⁴ - 3r³ + 2r - 1 and C(r) = r⁴ - r² + 2r + 3

P(r) = R(r) - C(r)

P(r) = (2r⁴ - 3r³ + 2r - 1) - (r⁴ - r² + 2r + 3) = r⁴ - 3r³ - r² - 4

The expression that represent the profit is given by P(r) = r⁴ - 3r³ - r² - 4

Find out more on equation at: brainly.com/question/2972832

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2 years ago
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