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3 years ago

Simplify this expression.

Mathematics

2 answers:

GalinKa [24]3 years ago

6 0

I believe the answer is C

shusha [124]3 years ago

6 0

2 times 10 is 20 and 2 times x is 2x and 2 times -4 is -8 then you subtract add 20 and -8 because they’re like terms giving you 2x+12 or c

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Bárbara corre con rapidez constante de 5 km/h a lo largo de 500 m que separan el colegio de su casa. Demora 3 minutos en recoger

sergiy2304 [10]

Answer:

try socratic it should help

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3 years ago

Brianna wants to save the $250 she earned by babysitting over the summer. She's trying to decide which

Nookie1986 [14]

Answer:

Total cost = Cost per month × 12 months per year × Number of years

= $21 × 12 × 8

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Step-by-step explanation:

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2 years ago

2 Points

liraira [26]

Two or zero expresses the possible number of positive real solutions for the given polynomial equation.

Answer: Option D

<u>Step-by-step explanation:</u>

Given equation:

$x^{3}-4 x^{2}-7 x+28=0$

First, we put hit and trial method to find out the one solution. So, if we put x=4 then the above expression will become zero. We can also write the above expression as

$(x-4) \times\left(x^{2}-7\right)=0$

We know the formula, $a^{2}-b^{2}=(a+b)(a-b)$ , make use of this, we get

$(x-4) \times(x-\sqrt{7}) \times(x+\sqrt{7})=0$

So, $x=4, \sqrt{7},-\sqrt{7}$

Hence, from the above expression, we have three values of x as x= 4, 2.64 and -2.64

8 0

2 years ago

Find the value of x when 6-4x = 6x-8x-2.

mestny [16]

Answer:

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

6−4x=6x−8x−2

6+−4x=6x+−8x+−2

−4x+6=(6x+−8x)+(−2)(Combine Like Terms)

−4x+6=−2x+−2

−4x+6=−2x−2

Step 2: Add 2x to both sides.

−4x+6+2x=−2x−2+2x

−2x+6=−2

Step 3: Subtract 6 from both sides.

−2x+6−6=−2−6

−2x=−8

Step 4: Divide both sides by -2.

−2x−2=−8−2

x=4

here is a link:

https://www.mathpapa.com/algebra-calculator.html?q=6-4x%3D6x-8x-2.

6 0

3 years ago

5х2 +х — 4<br> Factor completely

Step2247 [10]

Answer:

(5x-4)(x+1)

Step-by-step explanation:

3 0

2 years ago