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DaniilM [7]
3 years ago
11

The teacher never taught this please help it’s for a grade

Mathematics
1 answer:
34kurt3 years ago
8 0

Answer: D 2/3

Step-by-step explanation:

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Find the equation of a line that is parallel to y = 2x + 3 and passes through (-1, -1).
drek231 [11]

Answer:

  y = 2x +1

Step-by-step explanation:

The given line is in "slope-intercept" form, where the slope is the coefficient of x, 2, and the intercept is the added constant, 3. The parallel line will have the same slope, but its constant will be different. We can find the constant by putting the given point into an equation with the constant as the unknown:

  y = 2x + b

  -1 = 2(-1) +b . . . substitute for x and y

 2 -1 = b . . . . . . add 2

  1 = b

So the equation for the parallel line is ...

  y = 2x + 1

4 0
3 years ago
In a class 28 of students, 5 have a cat and 21 have a dog. There are 4 students who do not have a cat or a dog. What is the prob
Sergeeva-Olga [200]

Answer:

15 have only a dog

5 have a dog and a cat

9 have only a cat

Step-by-step explanation:

20 + 14 = 34, there there are only 29 students, so 34 - 29 or 5 have both a dog and a cat

15 have only a dog

5 have a dog and a cat

9 have only a cat

6 0
3 years ago
HeIp me please! !!!??
Sholpan [36]

126 students like football :)

3 0
3 years ago
Read 2 more answers
A line contains the points (8, 9) and (–12, –7). Using point-slope form, write the equation of the line that is parallel to the
Alexxx [7]
For palarell lines, slope are equal.
slope of first line = (y2 - y1)/(x2 - x1) = (-7 - 9)/(-12 - 8) = -16/-20 = 4/5
equation of a line passing through a point is given by: y - y1 = m(x - x1); where (x1, y1) = (-5, -15) and m = 4/5.
Therefore equation of the line is y - (-15) = 4/5(x - (-5))
y + 15 = 4/5(x + 5)
7 0
3 years ago
Read 2 more answers
Isa and Jack have part-time jobs.
const2013 [10]
If x is number of hours worked and y total pay, in y=9.5x, 9.5 is hourly rate.
Isa's hourly rate is 9.5$.
From the table: for 2 hours worked Jack earns 16.5$, for 5 hours worked 41.25$ and for 8 66$. Jack's hourly rate is 16.5$/2=8.25$.
9.5/8.25=1.15
Isa earns 9.5$ per hour and Jack earns 8.25$ per hour. Isa's hourly rate of pay is 1.15 Jack's hourly rate of pay.
7 0
3 years ago
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