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Crank
3 years ago
5

1/2(x-5)=2x+5. What’s the answer

Mathematics
1 answer:
sergeinik [125]3 years ago
5 0

Answer:

x = -5

Step-by-step explanation:

1/2(x-5)=2x+5

Multiply each side by 2

2(1/2(x-5))=2(2x+5)

x-5 = 4x+10

Subtract x from each side

x-5-x = 4x+10-x

-5 = 3x+10

Subtract 10 from each side

-5-10 = 3x+10-10

-15 =3x

Divide by 3

-15/3 = 3x/3

-5 =x

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P(x) = x^4+ax^3-x^2+bx-12 has factors of (x-2) and (x+1). Solve the equation P(x)=0​
Feliz [49]

Answer:

because P(x) has factors of (x-2) and (x+1) => x = 2 and x = -1 are the solutions of P(x)

so we have:

\left \{ {{2^{4}+2^{3}a-2^{2}+2b-12   =0} \atop {1-a-1-b-12=0}} \right.\\=>\left \{ {{8a+2b=0} \atop {a+b=-12}} \right.\\\left \{ {{4a+b=0} \atop {a+b=-12}} \right.\\\left \{ {{a=4} \atop {b=-16}} \right.

=> P(x)=x^{4} + 4x^{3}-x^{2} -16x-12

With P(x) = 0

=> x^{4}+4x^{3}-x^{2} -16x-12 = 0

=> ........

Step-by-step explanation:

5 0
3 years ago
Substract the following :(4x^3+6x+9)-(-15x^2+7x-2)
STatiana [176]
To solve this, we need to rearrange to get like terms by each other. Remember to distribute the negative.

4x^3+6x+9+15x^2-7x+2

4x^3+15x^2+6x-7x+9+2

4x^3+15x^2-x+11

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Each Sunday during his nine week summer vacation, Ray buys a newspaper. The Sunday paper costs $1.85. ABOUT how much does Ray sp
anygoal [31]
1.85×9 is your answer - I'm not American drk about dollars
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A line that includes the point (4, 7) has a slope of 3. What is its equation in slope-intercept form?
vampirchik [111]

Answer: slope intercept is solve for y

Step-by-step explanation:

point slope

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given

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3 years ago
2/4+3/2+1/4 I need help
alexdok [17]

Answer:

2 1/4 or 2.25

Step-by-step explanation:

2/4 = 1/2

3/2 = 6/4

1/2 + 3/2 + 1/4

2/4 + 6/4 + 1/4

add

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<em><u>Plz mark as brainliest if correct!!!</u></em>

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