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makkiz [27]
3 years ago
15

(2x+3)^2 if necessary combine like terms

Mathematics
1 answer:
marysya [2.9K]3 years ago
6 0

Answer:

2x^{2} + 12x + 9

combine like terms:

2x(x+6) + 9

Step-by-step explanation:

square 2x first which gives you 2x^2

then multiply 2 with 2x then again multiply with 3 which is = 2x x 2x3 = 12

then square 3 which gives us 9

= 2x^{2} + 12x + 9

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Answer:

Step-by-step explanation:

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3 years ago
Last month you purchased 6 individual songs and 1 albums for a total of $21.99.
Annette [7]

Answer:

Song =$1.50 Album =$12.99

Step-by-step explanation:

Lets assume Individual songs = x

albums=y

6x + y = 21.99-------- y= 21.99- 6x

4x + 3y= 44.97

Replace y in the second equation

4x+ 3(21.99-6x) = 44.97

4x +65.97- 18x = 44.97

14x= 21

x = 1.50

y= 21.99- (6*1.50)

= 12.99

7 0
3 years ago
An online file storage site offers a payment plan where users
lozanna [386]

Answer:   95.40

Step-by-step explanation:

7.95*12=95.40

6 0
3 years ago
5=1/2x - 3 please help me out
liq [111]

Answer:

x = 16

Step-by-step explanation:

5 = 1/2(x) - 3

Add 3 to both sides.

8 = 1/2(x)

Rewrite for clarity.

1/2(x) = 8

x/2 = 8

Multiply both sides by 2.

x = 16.

Proof:

5 = 1/2(x) - 3

Substitute variable.

5 = 1/2(16) - 3

Multiply 1/2 and 16.

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3 0
3 years ago
Consider the line <img src="https://tex.z-dn.net/?f=%20y%3D%5Cfrac%7B2%7D%7B3%7D%20x%2B1%20" id="TexFormula1" title=" y=\frac{2}
miv72 [106K]

we are given equation of line

y=\frac{2}{3} x+1

Equation of perpendicular line:

Firstly , we will find slope of line

y=\frac{2}{3} x+1

we can compare it with

y=mx+b

we get

m=\frac{2}{3}

we know that

slope of perpendicular line will be -1/m

so, slope is

\frac{-3}{2}

It passes through point (-4,5)

so, we can use point slope form of line

y-5=-\frac{3}{2}(x+4)

we get

y=-\frac{3}{2}x-1..........Answer

Equation of parallel line:

Firstly , we will find slope of line

y=\frac{2}{3} x+1

we can compare it with

y=mx+b

we get

m=\frac{2}{3}

we know that

slope of parallel line always equal

so, slope is

\frac{2}{3}

It passes through point (-4,-5)

so, we can use point slope form of line

y+5=\frac{2}{3}(x+4)

we get

y=\frac{2}{3}x-\frac{7}{3}............Answer

4 0
4 years ago
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