3 years ago

How do I solve this system of equations by adding, subtracting, or multiplying? x-y=8;x+y=12

1 answer:

Natasha2012 [34]3 years ago

7 0

By substitution.
Get y or x alone then insert it into the other equation solving for one of the two variables. After that substitute ur answer into one of the equations then solve.

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The sum of a number z divided by three and the number

charle [14.2K]

the required algebraic expression is: $\frac{z}{3}+z$

Step-by-step explanation:

We need to write the algebraic expression of the sum of a number z divided by three and the number

Let the number be z

a number z divided by three: $\frac{z}{3}$

the sum of a number z divided by three and the number: $\frac{z}{3}+z$

So, the required algebraic expression is: $\frac{z}{3}+z$

Keywords: Algebraic expression

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3 years ago

Amanda rented a bike from Ted's Bikes. It costs $9 for the helmet plus $3.75 per hour. If Amanda paid about $40.88, how many hou

loris [4]

Answer:

≈8.5 hrs

Step-by-step explanation:

find the equation h would equal to 3.75

$3.75h+9= 40.88$

Next subtract 9 out from both side of the equation

$3.75h+9 -9= 40.88-9$

$3.75h= 31.88$

Divide 3.75 out of both sides of the equation

$\frac{3.75h= 31.88}{3.75}$

$h=8.50133$

Round to the nearest tenth

≈ $8.5$

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2 years ago

(07.01)<br> What is the 24th term of the arithmetic sequence where a1 = 8 and ag = 56?

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the 24th term of the arithmetic is 146

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What is the solution to the system of equations?

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0,-1,1 is the solution

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3 years ago

After all students have left the classroom, a statistics professor notices that four copies of the text were left under desks. A

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Answer: D.

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B lists the 2431 as an "other" outcome when it is the same one listed before.

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