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Tems11 [23]
3 years ago
5

what is the equation of the line that is parallel to the line y=2x+7 and passes through the point (-2,1)

Mathematics
1 answer:
vichka [17]3 years ago
8 0
The line is parallel so the slope is the same. So the slope = 2
Using a point-slope equation we have
 y-y1 = 2(x-x1)
plug in the points
y-1 = 2(x-(-2))
=> y = 2x + 4 - 1 
=> y = 2x +3
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3 0
2 years ago
Write 8/4 as a mixed number. how did you come to your answer
Sergeeva-Olga [200]
To write in the mixed fraction you have to simply divide 8 and 4. 
To right in the mixed number we need to know numerator, denominator and divisor. 
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=  \frac{2}{1}

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7 0
3 years ago
You have one type of candy that sells for $1.70/lb and another type of candy that sells for $3.40/lb. You would like to have 8.5
Andrew [12]

Answer: You will need 3.5lbs of the cheaper candy

and 5 lbs of the expensive candy.

Step-by-step explanation:

Let x represent the number of pounds of the cheaper candy that you would need.

Let y represent the number of pounds of the expensive candy that you would need.

You would like to have 8.5 lbs of a candy mixture. It means that

x + y = 8.5

You have one type of candy that sells for $1.70/lb and another type of candy that sells for $3.40/lb. The candy mixture would sell for $2.70/lb. It means that the total cost of the mixture would be 8.5 × 2.7 = $22.95. The expression would be

1.7x + 3.4y = 22.95- - - - - - - - - - - 1

Substituting x = 8.5 - y into equation 1, it becomes

1.7(8.5 - y) + 3.4y = 22.95

14.45 - 1.7y + 3.4y = 22.95

- 1.7y + 3.4y = 22.95 - 14.45

1.7y = 8.5

y = 8.5/1.7

y = 5

x = 8.5 - y = 8.5 - 5

x = 3.5

5 0
2 years ago
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