2 years ago

Which of the following is the solution to 17 - 2x=-11? 03 O-14 14 -3

Mathematics

2 answers:

Rudiy272 years ago

6 0

Answer:

17-2x=-11 ---> 14

Step-by-step explanation:

plug in the "answers"

17-2(14)=-11

SashulF [63]2 years ago

4 0

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Which of the following expressions is a factor of the polynomial x 2 +3/2x-1

Elodia [21]

Answer:

$\large \boxed{\sf \ \ \ (x+2)(x-\dfrac{1}{2}) \ \ \ }$

Step-by-step explanation:

Hello,

let's solve

$x^2+\dfrac{3}{2}x-1=0\\\\ 2x^2+3x-2=0 \ \text{multiply by 2}\\\\\\$

$\Delta=b^2-4ac=9+4*2*2=9+16=25$

There are two solutions

$x_1=\dfrac{-3-\sqrt{25}}{4}\\\\x_1=\dfrac{-3-5}{4}\\\\x_1=\dfrac{-8}{4}\\\\\boxed{x_1=-2}$

And

$x_2=\dfrac{-3+\sqrt{25}}{4}\\\\x_2=\dfrac{-3+5}{4}\\\\x_2=\dfrac{2}{4}\\\\\boxed{x_2=\dfrac{1}{2}}$

So we can write

$x^2+\dfrac{3}{2}x-1\\\\=(x-x_1)(x-x_2)\\\\=(x+2)(x-\dfrac{1}{2})$

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

5 0

3 years ago

There are 20 cars in Thomas's toy car collection. Four-Fifths of the cars are blue. How many blue cars does he have?

Dmitry_Shevchenko [17]

Answer:

I think 15.

Step-by-step explanation:

20 ÷ 5=4 and 5 × 3=15.

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3 years ago

True or False: X=3 is the solution to 2x+10/5=4.<br><br> 1. True <br> 2. False

s2008m [1.1K]

Answer:

Step-by-step explanation:

False

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Here is the set up:

Side 1 is 4x.

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Side 3 is 5x + 1

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Take it from here.

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3 years ago

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Plug in 20 to W making 20-8, so your answer would be 12 :)

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3 years ago

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