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VMariaS [17]
3 years ago
15

Which expression is equivalent to "-4 - (-5)"? 5 - (-4) 5 + 4 -4 + 5 4 + 5

Mathematics
2 answers:
kodGreya [7K]3 years ago
7 0
The answer is -4 + 5
dangina [55]3 years ago
7 0
The expression that is equivocal to “-4 - (-5)” is -4 + 5
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12 plus 2 times a number is 6 times the number. what is the number?
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X=3

Step-by-step explanation:

12+2x=6x

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How many tissues does a carrot contain?<br>Explain your reasoning.​
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khv-hjsb-qwc. join in meet all

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X-y+z=-4<br><br> 3x+2y-z=5<br><br> -2x+3y-z=15<br><br> How do I solve this?
Lera25 [3.4K]
1)\ \ \ x-y+z=-4\ \ \ \Rightarrow\ \ \ z=-4-x+y\\\\2)\ \ \ 3x+2y-z=5 \\.\ \ \ \  \Rightarrow\ \ 3x+2y-(-4-x+y)=5 \\.\ \ \ \  \Rightarrow\ \ 3x+2y+4+x-y=5 \\.\ \ \ \  \Rightarrow\ \ 4x+y=1\\\\3)\ \ \ -2x+3y-z=15\\.\ \ \ \  \Rightarrow\ \ -2x+3y-(-4-x+y)=15\\.\ \ \ \  \Rightarrow\ \ -2x+3y+4+x-y=15\\.\ \ \ \  \Rightarrow\ \ -x+2y=11\\--------------------\\

z=-4-x+y\\.\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ and\\ \left \{ {{4x+y=1\ \ \ \ } \atop {-x+2y=11\ /\cdot4}} \right. \\\\\left \{ {{4x+y=1\ \ \ \ } \atop {-4x+8y=44}} \right. \\-------\\y+8y=1+44\\9y=45\ /:9\\y=5\\\\-x+2y=11\ \ \ \Rightarrow\ \ \ x=2y-11\ \ \ \Rightarrow\ \ \ x=2\cdot5-11=-1\\\\z=-4-x+y=-4-(-1)+5=-4+1+5=2\\\\Ans.\ x=-1\ \ \ and\ \ \ y=5\ \ \ and\ \ \ z=2
5 0
3 years ago
I need help.please explain and solve the problem.thank you so much that's 4th grade math​
VashaNatasha [74]

Answer:

7x50=350

Step-by-step explanation:

5 0
3 years ago
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Are the equation linear or nonlinear?​
I am Lyosha [343]

Answer:

<em>Results below</em>

Step-by-step explanation:

<u>Equation of the line</u>

A straight line can be written in the form:

y = ax + b

Where a and b are constants and x is the independent variable.

The essential condition for an equation to be linear is that the x must be powered to the exponent 1, which is usually not written.

From the equations presented in the table:

y = x^1+2 is linear because the exponent of the x is 1

y = 5(x+2) = 5x + 10 is linear with a=5 and b=10.

y = x is linear with a=1 and b=0

y = x^2+1 is not linear because the exponent of x is 2

y = x(x) = x^2 is not linear because the exponent of x is 2

The table below summarizes the results

8 0
3 years ago
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