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skelet666 [1.2K]
2 years ago
10

Rewrite 2x - 2y = 8 in slope-intercept form

Mathematics
1 answer:
zloy xaker [14]2 years ago
5 0

Answer:

y = -4 + x

Step-by-step explanation:

<u>Note: POE = Property of Equality</u>

Given equation: 2x - 2y = 8

Subtraction POE: -2y = 8 - 2x

Division POE: y = -4 + x

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Reverse the two digits of my age, divide by three, add 20, and the result is my age. How many years old am I
lapo4ka [179]

Answer:

  • 48 years old.

Step-by-step explanation:

Let the age be xy or 10x + y.

Reverse the two digits of my age, divide by three, add 20, and the result is my age, convert this to equation:

  • (10y + x)/3 + 20 = 10x + y
  • (10y + x)/3 = 10x + y - 20
  • 10y + x = 3(10x + y - 20)
  • 10y + x = 30x + 3y - 60
  • 30x - x + 3y - 10y = 60
  • 29x - 7y = 60

We should consider both x and y are between 1 and 9 since both the age and its reverse are 2-digit numbers.

Possible options for x are:

  • 29x ≥ 7*1 + 60 = 67 ⇒ x > 2, at minimum value of y,

and

  • 29x ≤ 7*9 + 60 = 123 ⇒ x < 5, at maximum value of y.

So x can be 3 or 4.

<h3>If x = 3</h3>

  • 29*3 - 7y = 60
  • 87 - 7y = 60
  • 7y = 27
  • y = 27/7, discarded as fraction.

<h3>If x = 4</h3>

  • 29*4 - 7y = 60
  • 116 - 7y = 60
  • 7y = 56
  • y = 8

So the age is 48.

6 0
1 year ago
$1950 plus 15% is what
Fudgin [204]
15% of 1950 = 1950 * 0.15 = 292.5
So, sum would be: 1950 + 292.5 = 2242.5

In short, Your Answer would be $2242.5

Hope this helps!
6 0
3 years ago
Please answersssss 15 pointssss
Anettt [7]
The answer to this problem is B
7 0
3 years ago
Read 2 more answers
Someone please help me
nlexa [21]

Answer:

c

Step-by-step explanation:

according to PEMDAS you should always do whats inside the parentheses first, then you'll multiply the parentheses by 5

3 0
3 years ago
Joey puts 25% of his allowance into savings each week. If last week he put 10$ in savings, what was his allowance last week?​
GrogVix [38]

Answer:

$40

Step-by-step explanation:

25% is 1/4.

If 10 is 1/4 of the full amount, then you take 10 and multiply by 4 to get the full amount.

10 times 4 equals 40.

7 0
2 years ago
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