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Dafna11 [192]
3 years ago
5

1.6 solving for a variable 2x+3y=12 for x​

Mathematics
2 answers:
AfilCa [17]3 years ago
8 0

Answer:

x=(12-3y)÷2

Step-by-step explanation:

2x+3y=12

2x=12-3y

2x÷2 = (12-3y)÷2

x = (12-3y)÷2

QveST [7]3 years ago
6 0

To solve for a variable means to isolate the variable on one side of the equation.

2x+3y = 12

2x = -3y + 12

x = (-3y + 12)/2

Done.

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If there are 4 dogs and they each eat 2 pounds of food each day. Then, all together there are 8 pounds of food getting eaten each day. You will want to divide 456 by 8.

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456 punds of dog food will last 57 days for 4 dogs.

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3 years ago
How many different values can an algebraic expression like 5+(x+2)
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Paul and Charlene are 420 miles apart. They start toward each other with Paul driving 16 mph faster than Charlene. They meet in
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Answer:

34 mph.    

Step-by-step explanation:

Let x be speed of Charlene, then speed of Paul will be x+16 as we are given that Paul is driving 16 mph faster than Charlene.

Let y be distance covered by Charlene, then distance covered by Paul will be 420-y.  

Now we will use formula \text{Speed}=\frac{\text{Distance}}{\text{Time}}. Upon using our given information we will get two equation and two unknowns as:  

x+16=\frac{420-y}{5}...(1)

x=\frac{y}{5}...(2)

Upon substituting x=\frac{y}{5} in 1st equation we will get,

\frac{y}{5}+16=\frac{420-y}{5}

Upon multiplying both sides of our equation by 5 we will get,

5(\frac{y}{5}+16)=420-y

5\times\frac{y}{5}+5\times 16=420-y    

y+80=420-y

y+80+y=420-y+y

2y+80=420

2y=420-80

2y=340

y=\frac{340}{2}  

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Upon substituting y=170 in 2nd equation we will get,

x=\frac{170}{5}

x=34

Therefore, Charlene's speed is 34 miles per hour.


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3 years ago
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Answer:

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1 year ago
Whats the distance between points p1=(-3,5) P2=(4,2)
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Step-by-step explanation:

First, find the vector.

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