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natta225 [31]
3 years ago
7

|2x-5|+17=2 I don’t know how to do it what’s the answer

Mathematics
1 answer:
elena-s [515]3 years ago
5 0

Answer:

x=-6,11

Step-by-step explanation:

Break down the problem into these 2 equations.

2x-5=17

-(2x-5)=17

2 Solve the 1st equation: 2x-5=17

x=11

3 Solve the 2nd equation: -(2x-5)=17

x=-6x

4 Collect all solutions.

x=-6,11

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Answer:

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Step-by-step explanation:

3x^2 - 5x = -8

3x^2 - 5x + 8 = 0

There are complex roots if the discriminant  9b^2 - 4ac) is negative.

Here the discriminant D = (-5)^2 - 4*-5*8 = 25 + 160

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7 0
3 years ago
Liam is saving up for a new cell phone. He uses the equation P= I + HB, where P is the cost
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Answer:

H=\dfrac{P-I}{B}

Step-by-step explanation:

Given the expression: P= I + HB

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We want to find an expression for H, the number  of hours Liam will need to babysit to save enough money for a cell phone.

Our goal is to isolate the variable H in the expression P= I + HB.

P= I + HB

Subtract I from both sides

P-I=I-I+HB

HB=P-I

Divide both sides by B

\dfrac{HB}{B} =\dfrac{P-I}{B}\\\\$Therefore\\\\H=\dfrac{P-I}{B}

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Answer:

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Step-by-step explanation:

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1

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