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kobusy [5.1K]
3 years ago
14

If y = (x-5)(x+7) then what does x equal?

Mathematics
1 answer:
DochEvi [55]3 years ago
7 0

Answer:

x = 5, x = -7

Step-by-step explanation:

If you mean find the roots, then x = 5 and x = -7

Because roots makes the equation equal to 0 and 5 - 5 = 0 and -7 + 7 = 0

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If f(x) = - 8x +2 then f^-1(x) =
mrs_skeptik [129]

Answer:

f^-1(x)  = -1/8x +1/4

Step-by-step explanation:

To find the inverse of a function

Exchange x and y and then solve for y

y =-8x+2

Exchange x and y

x = -8y+2

Now solve for  y

Subtract 2 from each side

x-2 = -8y+2-2

x-2 = -8y

Divide by -8

(x-2)/-8 = -8y/-8

Distribute

-1/8x +1/4 = y

f^-1(x) = -1/8x +1/4

3 0
3 years ago
Pls help I struggling a lot pls pls pls I need pro math expert
Soloha48 [4]

Answer:

Option: h\leq 16

Step-by-step explanation:

<u>Looking for key words in the problem:</u>

"At Most" represents important key words, meaning the maximum amount of hotdogs that are at the barbecue.

<u>Inequality:</u>

h\leq 16

h \leq 16 represents the maximum amount of hotdogs that has to be at the barbecue, also represents less than 16 can be cooked.

3 0
2 years ago
Write in slope-intercept form an equation of the line that passes through the given points.
nlexa [21]

Answer: y = 1/ 8 x − 1

8 0
3 years ago
Jane’s cell phone plan is $40 each month plus $0.15 per minute for each minute over 200 minutes of call time. Janes cell phone b
san4es73 [151]

Answer:

The equation is 40+0.15m = 58.00 whose solution is m =120\:minutes.

Step-by-step explanation:

Let us call m the number of minutes the phone is used over 200 minutes, then we have

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This equation can be used to solve for  m u as follows:

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Step-by-step explanation:

u need to go to school

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