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12345 [234]
3 years ago
8

what is 9z+2=6z-10-z-4 we have to do something called railroad tracks where we put lines down the sides of the equal sign but I

am confused on this one.
Mathematics
1 answer:
Colt1911 [192]3 years ago
3 0
You want to solve for 'z'.
First combine like terms on either side of the equal sign.

Left side:  9z +2  ----> No like terms, leave alone

Right side: 6z - 10 -z - 4  ----> circle like terms and add
                    6z -z = 5z
                   -10 -4 = -14
Now the equation is:
9z + 2 = 5z - 14

Get all the 'z' terms on the left side and all the numbers on right side.
You can move a term to the other side if you flip the sign.

Move 5z to left side, flip the sign to -5z
Move '2' to right side, flip the sign to -2

9z - 5z = -2 -14

Add like terms
4z = -16

Divide by 4 on both sides
z = -4
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When you divide a negative number by a positive number then the quotient is negative.

Step-by-step explanation:

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Easy question.<br><br> Solve the inequality -5x&lt;40
laiz [17]

\huge\text{Hey there!}

\mathsf{-5x < 40}

\large\text{DIVIDE -5 to BOTH SIDES}

\mathsf{\dfrac{-5x}{-5}

\rm{CANCEL\  out: \dfrac{-5}{-5} \ because\  that \ gives\  you\  1}

\rm{KEEP: \dfrac{40}{-5}\ because \ that \ gives \  you \ what \ you \ are\ comparing}\\\\\rm{to \ the \ x-value}

\mathsf{\dfrac{40}{-5}=\boxed{\bf -8}}

\mathsf{x > -8}

\boxed{\boxed{\large\textsf{Answer: \large \bf x }\bf  > \large\textsf{\bf -8}}}\huge\checkmark

\boxed{\large\textsf{IT is an O(P)(E)(N)(E)(D)   circle shaded to the right}}

\large\text{Good luck on your assignment and enjoy your day!}

~\frak{Amphitrite1040:)}

3 0
3 years ago
While in flight, a hot air balloon decreases its elevation by 83 2/5 meters and then increases its elevation by 83.7 meters
Pachacha [2.7K]

An inequality which compares the changes in elevation of this hot air balloon while in flight is given by L - 83 2/5 ≤ L ≤ L + 83.7.

<h3>What is an elevation?</h3>

An elevation is also referred to as an altitude and it can be defined as the vertical distance (height) above a natural satellite or the surface of planet Earth such as land or sea level.

This ultimately implies that, an elevation (altitude) simply refers to the vertical height (elevation) of an object or physical body above a particular location or planetary reference plane such as land or sea level on planet Earth.

<h3>What is an inequality?</h3>

An inequality can be defined as a mathematical relation that compares two (2) or more integers and variables in an equation based on any of the following arguments (symbols):

  • Less than (<).
  • Greater than (>).
  • Less than or equal to (≤).
  • Greater than or equal to (≥).

For this exercise, let the variable L represent the initial height of this balloon. Also, since the hot air balloon decreased its elevation by 83 2/5 and increases its elevation by 83.7 meters, we have the following:

  • The lower limit is equal to: L - 83 2/5.
  • The upper limit is equal to: L + 83.7.

In this context, an inequality which models the changes in elevation of this hot air balloon is L - 83 2/5 ≤ L ≤ L + 83.7.

Read more on inequality here: brainly.com/question/6666926

#SPJ1

5 0
1 year ago
Pls help and have a great day &lt;333!!!!
nirvana33 [79]

Answer:

find the least common multiple for the denominator and multiply with the numerator

for the first one,

Step-by-step explanation:

the common multiple for 4 and 6 is 12

4×3=12

6×2=12

multiply the same numbers with the numerator

1×3=3

5×2=10

the answer is 3/12 and 10/12

8 0
3 years ago
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