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3 years ago

12

What's equivalent to 2x+2(x+3)-2-x ?

2 answers:

andrew11 [14]3 years ago

8 0

The answer is 3x+4. hope that helps :)

tia_tia [17]3 years ago

6 0

Answer:

$= 2x + 2x + 6 - 2 - x \\ = 3x + 4$

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Step-by-step explanation:

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3 years ago

The difference between two numbers is 10 and their sum is 20. Find the biggest number.

marysya [2.9K]

Answer:

15

Step-by-step explanation:

x - y = 10, then x = 10 + y

x + y = 20

substitute for x:

10 + y + y = 20

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y = 5

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3 years ago

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hram777 [196]

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4 0

3 years ago

It is possible to get 2 solutions when the system of equations is: (check all that apply)

SVETLANKA909090 [29]

Answer:

A system of the equation of a circle and a linear equation

A system of the equation of a parabola and a linear equation

Step-by-step explanation:

Let us verify our answer

A system of the equation of a circle and a linear equation

Let an equation of a circle as $x^2+ y^2 = 1$ ..........(1)

Let a liner equation Y = x ............(2)

substitute (2) in (1)

$x^2 + x^2 = 1\\2x^2 = 1\\$

$x^2 = \frac{1}{\sqrt{2} } \\x = +\frac{1}{\sqrt{2} } , -\frac{1}{\sqrt{2} }$ so Y = $+\frac{1}{\sqrt{2} } , -\frac{1}{\sqrt{2} }$

so the two solution are ( $(\frac{1}{\sqrt{2} } ,\frac{1}{\sqrt{2} }) (-\frac{1}{\sqrt{2} }, -\frac{1}{\sqrt{2} }$ )

A system of the equation of a parabola and a linear equation

Let equation of Parabola be $y^2 = x$

and linear equation y = x

substitute

$x^2 = x\\x^2 - x= 0\\x(x-1) = \\x = 0 , 1$

Y = 0,1

so the two solutions will be (0,0) and (1,1)

3 0

3 years ago

Is 9 bigger than negative 10??

Mkey [24]

Answer:

Yes 9 is larger than -10

Step-by-step explanation:

Any positive number is larger than a negative number

5 0

3 years ago

Read 2 more answers