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maw [93]
3 years ago
15

Let f(x) = 2x + 2. solve f-1 (x) when x=4

Mathematics
1 answer:
GaryK [48]3 years ago
6 0
If we let f(x)=2x+2 and solving for f-1(x) when x=4

f-1(x)=2(4)+2=10-1=9

Hope this helps. Any questions please just ask. Thank you.
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Elina [12.6K]

Answer:

C.) 5

Step-by-step explanation:

If beth were 5 ( Making Julio 3)

Gerald is 10 and Debra is 20

10+20+5+3 = 38

I hope this helps you :)

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What are the solutions to the quadratic equation 98-x2=0
kifflom [539]

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The senior classes at High School A and High School B planned separate trips to Lake Compounce. The senior class at High School
storchak [24]

Answer:

Number of students in vans =15 and bus =46

Step-by-step explanation:

use variables for the vans and buses

let x= vans and y=buses

Now solve the 2 equations simultaneously

<em><u>remember</u></em><em><u> </u></em><em><u>to</u></em><em><u> </u></em><em><u>number</u></em><em><u> </u></em><em><u>your</u></em><em><u> </u></em><em><u>equations</u></em>

6x+7y=412..........1

6x+9y=504.........2

make x the subject of one equation

and label it equation 3

6x=412—7y

x =  \frac{206}{3}  -  \frac{7y}{6} .............3

subs 3 into 2

6( \frac{206}{3}  -  \frac{7y}{6} ) + 9y = 504

412 - 7y + 9y = 504

- 7y + 9y = 504 - 412

2y = 92

y = 46...................4

subs 4 into 1

6x + 7(46) = 412

6x + 322 = 412

6x = 412 - 322

6x = 90

x = 15

Therefore there are 15 students in each van and 46 students in each bus.

3 0
2 years ago
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Katarina [22]

Answer:

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Step-by-step explanation:

To solve for x we :

9+x/15=10

x/15=1

x=15

4 0
3 years ago
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zepelin [54]

Your answer would be

A) 20.3

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