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Nadusha1986 [10]
3 years ago
11

20. A linear function is shown.

Mathematics
1 answer:
horsena [70]3 years ago
5 0

Answer:

g(x) = (1/2)x + 3

f(x) = g(x) at (-1/2 , 13/4)

Step-by-step explanation:

g(x) and f(x) will have exactly one solution when they are not parallel (same slope) and when they are not equivalent functions (like doubling or halving all terms).

f(x) = (-5/2)x - 3

g(x) = (1/2)x + 3    <= choose an easy equation.

To find the solution, equate the two functions:

f(x) = g(x)

(-5/2)x - 3   =  (1/2)x + 3

(-5/2)x - (1/2)x = 3 + 3    <= move variables to one side, constants to other

(-6/2)x = 6   <= simplify

x = 6 / (-6/2)    <=isolate x

x = -6/12

x = -1/2

Substitute x = -1/2 into any equation to find y

g(x) = (1/2)x + 3

g(1/2) = (1/2)(1/2) + 3

g(1/2) = (1/4) + 3

g(1/2) = (1/4) + (12/4)   <= find common denominator to add

y = (13/4)   <= the function symbol can be replaced by y

The coordinates are (-1/2 , 13/4).

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I NEED HELP ASAP PLEASEEEE
zhuklara [117]

Answer:

(f-g)(x)=x^2-6x+5  dom: (-∞,∞)

(\frac{f}{g})(x)=x-7+\frac{7}{x+2} dom: (–∞,–2)u(–2,∞)

Step-by-step explanation:

(f-g)(x)=f(x)-g(x)=(x^2-5x+7)-(x+2) *distribute the negative sign into (x+2)!

x^2-5x+7-x-2\\x^2-6x+5

a parabola (anything that begins with x^2) will have a domain of (-∞,∞) or all real numbers!!

(\frac{f}{g} )(x)= \frac{x^2-5x+7}{x+2}      use synthetic division to divide (the attached picture)

domain: Because the graph is not continuous, you have to write the domains on both sides of the asymptote which is (-∞,-2)u(-2,∞)

<u>synthetic division:</u>

1. take the divisor (x+2) and solve for x.    x= –2 this goes in the top left corner

2. write the numbers AND their signs on the top row. if there is no number and just the variable (like x^2 ) just write 1.

3. the first number gets pulled down

4. multiply -2 by 1 and subtract it from –5. (-5-2= -7)

multiply -2 by -7 and add that to the next number in the top row which is -7. (-7 + 14=7)

5. the first number in the bottom row of numbers is the first number in the answer but with one less exponent than the dividend. **write 1 as x**

6. the last number in the bottom row, if it is not 0, is a remainder. write it as that number over the divisor. in this case the remainder is 7. so write it as \frac{7}{x+2}

4 0
2 years ago
One number is 2 more than another. The difference between their squares is 52. What are the numbers?
kirza4 [7]
The numbers are 12 and 14.
4 0
3 years ago
Read 2 more answers
The sum of two numbers is 46 and the difference is 10 . What are the numbers?
EastWind [94]

Answer: 28 and 18


Step-by-step explanation:

I used the guess and test strategy to find that:

28 - 10 = 18

28 + 18 = 46

6 0
3 years ago
What are the solutions to the quadratic equ ton x2 – 16 = 0?
swat32

Answer:

x=4 and x=-4

Step-by-step explanation:

you dont really have to solve this one when you multiply the answer choices they should equal your B which is -16 and only 4 • -4 = -16 so yeah thats your answer

8 0
3 years ago
Jason correctly graphed an inequality as shown below
sattari [20]
4 < = x + 4 < = 8.....subtract 4 from all sections
4 - 4 < = x + 4 - 4 < = 8 - 4...simplify
0 < = x < = 4

this would produce a number line with a solid circle on 0 and a solid circle on 4, with shading in between....just like the graph shown in the picture u posted.

so the expression u would add would be : x + 4


8 0
3 years ago
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