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kaheart [24]
2 years ago
13

Help asap im in a quiz!

Mathematics
1 answer:
goldfiish [28.3K]2 years ago
5 0
The answer should be b
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10x-5 9x+2 is my equation and I don’t know how to solve it I really need help,someone please help me solve it.
Ostrovityanka [42]

9514 1404 393

Answer:

  x = 7

Step-by-step explanation:

You solve a linear equation by putting the variable on one side of the equal sign and a constant on the other side. Here, variables and constants are on both sides of the equal sign, so you need to separate them.

The basic idea is that you add the opposite of any term you don't want. Whenever you perform any operation (like "add"), <em>you must do it to both sides of the equation</em>.

We observe that x-terms have coefficients of 10 and 9. We choose to add the opposite of 9x to both sides:

  10 -9x -5 = 9x -9x +2

  x -5 = 2 . . . . simplify

Now, we still have -5 on the left, where we don't want it. So, we add its opposite (+5) to both sides:

  x -5 +5 = 2 +5

  x = 7 . . . . simplify

The solution is x = 7.

_____

<em>Additional comment</em>

If we were to end up with an x-coefficient other than 1, we would divide both sides of the equation by that coefficient. This will leave the x-term with a coefficient of 1.

8 0
2 years ago
Which statement could the expression n + 1 represent? one point greater than the last test grade the difference of Gina's score
sukhopar [10]

Answer:

A. One point greater than the last test grade.

Step-by-step explanation:

One point greater than the last test grade can be written as an expression:n + 1

The difference of Gina’s score and one can be written as an expression:

n - 1

The total cost less one dollar can be written as an expression: n - 1

One minute less than Mickey’s previous time can be written as an expression: n - 1

7 0
3 years ago
Read 2 more answers
How do i do this ?i need help on finding the answer . To all three questions
Igoryamba

Answer:

area of larger circle : 9π = 28.27

area of smaller circle: 4π = 12.57

area of shaded region: 15.71

Step-by-step explanation:

area of a circle = πr^2

I think these are right i dont know tho

8 0
3 years ago
A park in the shape of quadrilateral PQRS is bordered by four sidewalks. Find the measure of each
kykrilka [37]

Answer:

135°, 63°, 63°, 99°

Step-by-step explanation:

Find attached the diagram used in solving the question.

We would use formula for sum of interior angles to get each exterior angle.

From the diagram, we added additional variables to be able to solve for sum of interior angles.

Sum of angle on a straight line = 180°

a° +15z° = 180°

b° +7z° = 180°

c° +7z° = 180°

d° +11z° = 180°

Where a,b,c and d are interior angles

Sum of interior angles = 180(n-2)

n = number of sides

For quadrilateral, n= 4

a°+b°+c°+d° = 180(n-2)

180-15z +180-7z+180-7z+180-11z = 180(4-2)

720-40z = 180(2)

720 - 360 = 40z

z = 360/40

z = 9

Each exterior angle:

15z = 15×9 = 135°

7z = 7×9 = 63°

7z = 7×9 = 63°

11z = 11×9 = 99°

8 0
3 years ago
-y^2+x^3-4x^3-6y^2+5-2-x^3
Alex

\orange{-}\red{-}\green{-}\blue{-}\orange{-}\orange{-}\red{-}\green{-}\blue{-}\orange{-}

{\texttt{{Hello}}}

\gray{\boxed{{\textsf{trouble}}}}

-y  ^ { 2  }  +x  ^ { 3  }  -4x  ^ { 3  }  -6y  ^ { 2  }  +5-2-x  ^ { 3  } \\

\green{\boxed{{\textsf{Development}}}}

-y  ^ { 2  }  +x  ^ { 3  }  -4x  ^ { 3  }  -6y  ^ { 2  }  +5-2-x  ^ { 3  } \\

-y^{2}-3x^{3}-6y^{2}+5-2-x^{3}  \\

-y^{2}-3x^{3}-6y^{2}+3-x^{3}  \\

-y^{2}-4x^{3}-6y^{2}+3  \\

-7y^{2}-4x^{3}+3  \\

\red{\boxed{{\textsf{Answer}}}}

-7y^{2}-4x^{3}+3  \\

\red{\texttt{{\textsf{XxXDxX}}}}

\orange{-}\red{-}\green{-}\blue{-}\orange{-}\orange{-}\red{-}\green{-}\blue{-}\orange{-}

6 0
2 years ago
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