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sattari [20]
3 years ago
15

What is the equation of the line that goes through the points (-5,-1) and (5,5)?

Mathematics
1 answer:
Margaret [11]3 years ago
3 0

Answer:

y = 3/5 x + 2.

Step-by-step explanation:

Use the point-slope equation of a straight line:

y - y1 = m (x - x1) where m = the slope amd (x1, y1) is a point on the line.

Here:

m = (5- (-1)) / (5 - (-5))

= 6/10

= 3/5.

Substituting for m and  (5, 5):

y - 5 = 3/5(x - 5)

y - 5 = 3/5x - 3

y = 3/5 x + 2.

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David hikes 2 ¼ miles in ½ an hour at this rate, how long will it take him to walk 18 miles?
8090 [49]
So in 30 min will hike 2 1/4 miles =9 of those 1/4 miles therefore in 10 min will hike 9/3 =3 of those 1/4 miles = 3/4 of a mile

3/4 mile in 10 min;
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6 miles in 80 min;
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18 miles in 240 min or 4 hours

5 0
3 years ago
On a journey of 600 km, a train was delayed 1 hour and 30 min after having covered 1/4 of the way. To arrive on time at the dest
Sati [7]

Answer:

10 hours

Step-by-step explanation:

(150/x) + 1.5 + (450/(x+15)) = 600/x

Multiply through by x(x + 15):

150(x + 15) + 1.5x(x + 15) + 450x = 600(x + 15)

150x + 2250 + 1.5x^2 + 22.5x + 450x = 600x + 9000

150x + 2250 + 1.5x^2 + 22.5x + 450x - 600x - 9000 = 0

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x = (-22.5 +/- sqrt(22.5^2 - 4(1.5)(-6750))) / (2*1.5)

x = (-22.5 +/- sqrt(506.25 + 40500)) / 3

x = (-22.5 +/- sqrt(41006.25)) / 3

x = (-22.5 +/- 202.5) / 3

x = 180/3 or -225/3

x = 60 or -75

But a negative number doesn't make sense, so therefore x = 60, so the journey took 600/60 = 10  hours.

6 0
3 years ago
What is the answer!!!!!!
weqwewe [10]

Answer:

The answer is c: the lendth of the photo frame is between 11 and 12 inches.

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8 0
3 years ago
1/5 +3/10=<br><br> one fifth plus three tenths equals
Nina [5.8K]
1/5 + 3/10
= 2/10 + 3/10
= 5/10
= 1/2
6 0
3 years ago
Read 2 more answers
What is four plus four
WITCHER [35]

Answer:

8

Step-by-step explanation:

<u>Step 1:  Convert into expression</u>

Four plus four

<em>4 + 4</em>

<em />

<u>Step 2:  Combine </u>

4 + 4

<em>8</em>

<em />

Answer:  8

6 0
3 years ago
Read 2 more answers
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