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Natalka [10]
3 years ago
15

3x -3y = 15 x = 2y + 1

Mathematics
1 answer:
Alexus [3.1K]3 years ago
4 0

Answer:

3(2y+1)-3y=15     y=4

Step-by-step explanation:

substitute x=2y+1 into x  then solve for y

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He completed 2 and 4/5 rows of grapes each hour he worked after completing 140 rows of grapes how many hours had he worked?
algol [13]

Step-by-step explanation:

Divide 140 by 2\frac{4}{5} to represent the amount of hours he worked.

To make dividing easier, 2\frac{4}{5} can also represent 2.8 as a decimal.

\frac{140}{2.8} =50

He has worked 50 hours after completing 140 rows of grapes.

4 0
2 years ago
Lisa walked 8 km more than Tim. Lisa walked twice as far as Tim. How far did each walk?
valentinak56 [21]
x-\ Tim's\ distance\\\\
x+8-\ Lisa's\ distance\\\\
2x=x+8\ \ |Subtract\ x\\
2x-x=8\\
x=8\ \ -Tim\\
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6 0
3 years ago
Explain how to use absolute value to find the distance between (-2,-2) and (-2,5)
dem82 [27]
The absolute value of a number is its distance away from zero. Depending on how far away a number is, it has a less or greater absolute value. (-2,-2) have the same absolute value while (-2,5) have a different absolute value. Which has a greater absolute value? -25 or 6? The answer: -25, it is farther away from zero.
6 0
3 years ago
A general formula for a parabola is x2 = 4py. What is the value of p in the equation x2 = 12y? p =
stepladder [879]

Answer:

p=3

Step-by-step explanation:

The given parabola has equation ;

x^2=12y

The general formula for a parabola is;

x^2=4py

To find the value of p, we need to compare the coefficient of y in both equations;

\implies 4p=12

Divide both sides by 4;

\implies p=\frac{12}{4}

\implies p=3

5 0
3 years ago
Solve for X.<br> (Picture)
Ahat [919]

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6 0
3 years ago
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