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Anvisha [2.4K]
3 years ago
12

What is the equation of the line that passes through the points (1, 2) and (-2, -13)?

Mathematics
1 answer:
kenny6666 [7]3 years ago
3 0

Answer:

y = 5x - 3

Step-by-step explanation:

As we move from the point  (-2, -13) to the point (1, 2), we see the x-value (the 'run') increasing by 3 and the y-value (the 'rise') increasing by 15.  Therefore the slope of the line passing thru these two points is m = rise / run = 15/3, or m = 5.

Using the slope-intercept formyula y = mx + b, we find the y-intercept as follows, using 1 for x, 2 for y and 5 for m:

2 = 5(1) + b, or

b = -3

Then the desired equation is

y = 5x - 3

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What is 5x+538/23*1000-500=?
Leokris [45]

Answer:

x = (-105300)/23

Step-by-step explanation:

Solve for x:

5 x + 526500/23 = 0

Hint: | Put the fractions in 5 x + 526500/23 over a common denominator.

Put each term in 5 x + 526500/23 over the common denominator 23: 5 x + 526500/23 = (115 x)/23 + 526500/23:

(115 x)/23 + 526500/23 = 0

Hint: | Combine (115 x)/23 + 526500/23 into a single fraction.

(115 x)/23 + 526500/23 = (115 x + 526500)/23:

(115 x + 526500)/23 = 0

Hint: | Multiply both sides by a constant to simplify the equation.

Multiply both sides of (115 x + 526500)/23 = 0 by 23:

(23 (115 x + 526500))/23 = 23×0

Hint: | Cancel common terms in the numerator and denominator of (23 (115 x + 526500))/23.

(23 (115 x + 526500))/23 = 23/23×(115 x + 526500) = 115 x + 526500:

115 x + 526500 = 23×0

Hint: | Any number times zero is zero.

0×23 = 0:

115 x + 526500 = 0

Hint: | Isolate terms with x to the left hand side.

Subtract 526500 from both sides:

115 x + (526500 - 526500) = -526500

Hint: | Look for the difference of two identical terms.

526500 - 526500 = 0:

115 x = -526500

Hint: | Divide both sides by a constant to simplify the equation.

Divide both sides of 115 x = -526500 by 115:

(115 x)/115 = (-526500)/115

Hint: | Any nonzero number divided by itself is one.

115/115 = 1:

x = (-526500)/115

Hint: | In (-526500)/115, the numbers 526500 in the numerator and 115 in the denominator have gcd greater than one.

The gcd of 526500 and 115 is 5, so (-526500)/115 = (-(5×105300))/(5×23) = 5/5×(-105300)/23 = (-105300)/23:

Answer: x = (-105300)/23

5 0
4 years ago
What is the total cost of a pair of jeans that are priced $50.00 if there is 7% sales tax?
koban [17]

Answer:

a

Step-by-step explanation:

5 0
4 years ago
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Write the following equation in standard form:<br><br> y + 4 = -3(x + 2)
Likurg_2 [28]

Answer: 3x+y=-10

Step-by-step explanation: Using the formula, write in standard form.

Hope this helps you out.

8 0
4 years ago
An equation for the depreciation of a car is given by y = A(1 – r)t, where y = current value of the car, A = original cost, r =
Alika [10]

In the given question, the formula representing depreciation of the car is

Y = A(1-r)^t

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The current value of a car is $12,282.50. The car originally cost $20,000 and depreciates at a rate of 15% per year.

Substituting the values, we will get

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t=3


8 0
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If you answer (making sense) and explain (so I can understand) you will be awarded! Please help ASAPA
Pavlova-9 [17]
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8 0
4 years ago
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