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Hoochie [10]
3 years ago
8

1. What is the slope between the points (9,-1) and (-2,5)?

Mathematics
1 answer:
Ann [662]3 years ago
6 0
1. Slope = -6/11
2. n = 4
3. Area = 61.34
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Which shows the correct substitution of the values a, b, and c from the equation 0 = 4x2 + 2x – 1 into the quadratic formula bel
neonofarm [45]

Answer:

x = StartFraction negative 2 plus or minus StartRoot 2 squared minus 4(4)(negative 1) EndRoot Over 2(4) EndFraction

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form

ax^2+bx+c=0

is equal to

x=\frac{-b(+/-)\sqrt{b^2-4ac} }{2a}

in this problem we have

4x^2 + 2x - 1=0

so

a=4

b=2

c=-1

substitute in the formula

x=\frac{-2(+/-)\sqrt{2^2-4(4)(-1)} }{2(4)}

therefore

x = StartFraction negative 2 plus or minus StartRoot 2 squared minus 4(4)(negative 1) EndRoot Over 2(4) EndFraction

8 0
2 years ago
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(-9x - 4) - (4x2 + 2x - 7)
yaroslaw [1]

Answer:

I assume you meant 4x^2

So the answer in simplified form is -4x^2-11x+3

6 0
3 years ago
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Solve for x using the Quadratic Formula: x2 + 4x + 4 = 0 x = −2
EleoNora [17]

Answer:

x=-2

Step-by-step explanation:

x^2+4x+4 = 0

(x+2)(x+2) = 0

x+2=0

x=-2

6 0
2 years ago
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Pleaseee help!
user100 [1]

Step-by-step explanation:

f(3)=?

f(x)=2x+5

put x=3,

f(3)=2(3)+5=6+5=11

------------

g(2)=?

g(x)=x^2-3

put x=2,

g(2)=2^2-3=4-3=1

-----------------

g(f(-1))=?

g(x)=x^2-3

and f(-1)=2(-1)+5= -2+5=3

so g(f(-1))=3^2-3=9-3=6

----------------

f(g(-1))=?

f(x)=2x+5

g(x)=g(-1)=(-1)^2-3=1-3= -2

f(g(-1))=2(-2)+5= -4+5=1

----------------

g(f(x))=?

g(x)= x^2-3

put x=f(x),

g(f(x))=f(x)^2-3=(2x+5)^2-3=4x+25+20x-3=24x+25

7 0
3 years ago
|a+x|/2 − |a−x|/2 , if a=−2; x=−6<br><br> PLZ HELP!!!
Alchen [17]

Answer:

2

Step-by-step explanation:

|a+x|/2 − |a−x|/2 , if a=−2; x=−6

Evaluate this expression

Simply plug in the numbers

| -2 + -6 | /2   -   |-2 - -6|/2

|-8| /2  -   |4|/2

4 - 2

2

8 0
3 years ago
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