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VLD [36.1K]
2 years ago
14

A fence has a total of 800 planks. Violeta paints p planks

Mathematics
1 answer:
ratelena [41]2 years ago
3 0
Answer is 800/p

800 is the number of planks divided by how many she paints a day to calculate the number of days.
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Write the equation of 4x+5t=20 in slope-intercept form
Aleonysh [2.5K]

Answer:

y=(-4/5)x+4

Step-by-step explanation:

4x+5y=20

5y=-4x+20

y=(-4/5)x+4

4 0
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A washer and dryer cost a total of $960. The cost of the washer is three times the cost of the dryer. Find the cost of each item
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What is the equation of a line that is parallel to the line 2x + 5y = 10 and passes through the point (-5, 1)? Check all
Lilit [14]

Answer:

B, E

Step-by-step explanation:

The equation of that line in slope intercept form is y = -2/5x + 2

The slope of a line parallel to that line will be the same as its slope, so -2/5.

To find the y-intercept of a line that passes through the point (-5, 1) with that slope, you will have to plug in the x and y values of that point into what you know of the equation of the line.

y = -2/5x + b

1 = -2/5(-5) + b

1 = 2 + b

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From this, you can construct an equation.

y = -2/5x - 1

However, this is not an answer choice.  

It cannot be A because this line does not have a slope of -1.

2x + 5y = 15

5y = -2x - 5

y = -2/5x - 1

It can be B because this line is the same as the equation we came up with.

It cannot be C because this line does not have a slope of -1 or a y-intercept of -3.

2x + 5y = -15

5y = -2x - 15

y = -2/5x - 3

It cannot be D because this line does not have a y-intercept of -3.

y - 1 = -2/5(x + 5)

y - 1 = -2/5x - 2

y = -2/5x - 1

It can be E because this equation matches the one we came up with.

5 0
3 years ago
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lidiya [134]
Wweel if it weighs 20 then it should be 8 ounces of coffe
8 0
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