3 years ago

What is three times a number, minus 6, is equal to two times the number, plus 9

Mathematics

2 answers:

jeka57 [31]3 years ago

6 0

Number= x

3n-6 = 2n+9

Usimov [2.4K]3 years ago

3 0

3xN-6 = 2N+9
does this help or do you need the number

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Nicole is deciding between two different movie streaming sites to subscribe to. Plan A costs $24 per month plus $1.50 per movie

xz_007 [3.2K]

Answer:

Plan B

Step-by-step explanation:

If you multiply 21 by $2.50 you get $52.5 then add $5 you get 57.5 and that's you outcome for Plan A

but if you multiply 21 by $1.50 you get $31.5 then add $24 you get $55.5 so the best and cheapest plan would be Plan B

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2 years ago

What value of x is in the solution set of –5x – 15 > 10 + 20x?

Shalnov [3]

HI Brainiac

-5x-15 > 10+20x

-5x-20x > 10+15

-25x > 25

Divide both sides by -25

-25x/-25 > 25/-25

x < -1

Answer : B

I hope that's help:)

Have a great night :)

7 0

3 years ago

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Find the number that we can place in the box, so that the resulting quadratic is the square of a binomial.

Arturiano [62]

We need a number to complete

$(x+c)^2=x^2+2xc+c^2$

Since we have

$2xc=\dfrac{4}{5}x \iff 2c=\dfrac{4}{5}\iff c=\dfrac{4}{10}=\dfrac{2}{5}$

And so the expanded square is

$\left( x+\dfrac{2}{5}\right)^2=x^2+\dfrac{4}{5}x+\dfrac{4}{25}$

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4 years ago

The Paint Factory has 500 different colors of interior paint from which to choose. Generate an equivalent expression using prime

belka [17]

Answer:

The answer is C.

Step-by-step explanation:

The simplest form is C.

6 0

3 years ago

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Solve for x.

Lena [83]

1. x=1
5x=4+x
4x=4
x=1

2. x=3/4 or 0.75
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2x=1 1/2
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3. x=1
3x-2x+4=15/3
x+4=15/3
x=1

4. x=5
4x+7=2x+17
2x+7=17
2x=10
x=5

5. x=20
.5x=10
x=20

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3 years ago

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