2 years ago

Expand and simplify (x + 3)(x + 5)

Mathematics

2 answers:

Fittoniya [83]2 years ago

7 0

Answer:

xsquared+8x+15

Step-by-step explanation:

xsquared+3x+5x+15

xsquared+8x+15

ozzi2 years ago

6 0

1 *(x+3) * 1*(x+5)

1x+3 1x+5

combine like terms

2x+8

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X-2y=18 2x+y=6 parallel perpendicular or neither

sergey [27]

<h3>Therefore they are perpendicular.</h3>

Step-by-step explanation:

A equation of line is

y =mx +c

Here the slope of the line is m.

Given equations are

x - 2y = 18

⇔-2y = -x +18

$\Leftrightarrow y =\frac{1}{2} x -9$ ............(1)

and 2x + y = 6

⇔y = -2x +6 ............(2)

Therefore the slope of equation (1) is $(m_1)$ = $\frac{1}{2}$

Therefore the slope of equation (2) is $(m_2)$ = -2

If two lines are perpendicular, when we multiply their slope we get -1.

therefore,

$m_1. m_2$ = $\frac{1}{2}$ . (-2) = -1

Therefore they are perpendicular.

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anastassius [24]

Opposite Numbers and their Sums:

1+6=7
2+7=9
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4+9=13
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Because of this, the pair of opposite numbers are 3 and 8 if you want the pair that equal 11.

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SpyIntel [72]

Answer:

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Step-by-step explanation:

2(2x+1-x)=6

2(x+1)=6 add common factors

2x+2=6 distribute the 2

2x=4 subrtract 2 on both sides

x=2 divide 2 on both sides

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Expand and simplify (x + 3)(x + 5)​

Expand and simplify (x + 3)(x + 5)