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yan [13]
2 years ago
15

If f(x)= 5x, what is f^-1(x)?

Mathematics
1 answer:
Helen [10]2 years ago
8 0

Step-by-step explanation:

f( x) {}^{ - 1}  \\ f(x) = 5x \\ y = 5x \\ x = 5y \\ y =  \frac{x}{5}  \\ f(x) {}^{ - 1}  =  \frac{x}{5}

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In a class of 30 students, 12 are girls. What percent of the class is girls
dexar [7]

Answer:

40%

Step-by-step explanation:

Total students = 30

No. of girls. = 12

Girls % = ?

Girls % = No. of girls/Total students * 100%

= 0.4 * 100

= 40%

5 0
3 years ago
Cookies are on sale! Today each cookie costs $0.75, less than the normal price. Right now if you buy 7 of them it will only cost
Sophie [7]
Equation : c = (2.80 / 7) + 0.75

Normal price of each cookie:
c = (2.80 / 7) + 0.75
c = 0.4 + 0.75
c = $1.15
3 0
3 years ago
Simplify 3(7-3) the second power -4(6+2)
expeople1 [14]

Answer:

112

Step-by-step explanation:

3(7-3) = 3 x 4 = 12

12^2 = 144

144 -4(6+2)

144-4(8)

144-32

112

8 0
3 years ago
Read 2 more answers
What are the coordinates of the endpoints of the midsegment for △LMN that is parallel to LN¯¯¯¯¯ ?
Brut [27]
<span>(3, 4.5) and (3, 3)

       The midsegment of a triangle is a line connecting the midpoints of two sides of the triangle. So a triangle has 3 midsegments. Since you want the midsegment that's parallel to LN, we need to select the midpoints of LM and MN. The midpoint of a line segment is simply the average of the coordinates of each end point of the line segment. So:

   Midpoint LM:

   ((0+6)/2, (5+4)/2) = (6/2, 9/2) = (3, 4.5)

       Midpoint MN:

   ((6+0)/2, (4+2)/2) = (6/2, 6/2) = (3, 3)

       So the desired end points are (3, 4.5) and (3, 3)</span>
3 0
3 years ago
If |lm and m&lt;6 = 4x - 15 and m&lt;7 = x+30, then m&lt;6 =<br> 35<br> 45<br> 39<br> 15
pentagon [3]

Answer:

∠ 6 = 45°

Step-by-step explanation:

∠ 6 and ∠ 7 are alternate angles and are congruent, thus

4x - 15 = x + 30 ( subtract x from both sides )

3x - 15 = 30 ( add 15 to both sides )

3x = 45 ( divide both sides by 3 )

x = 15

Thus

∠ 6 = 4x - 15 = 4(15) - 15 = 60 - 15 = 45°

4 0
3 years ago
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