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drek231 [11]
4 years ago
5

How many two digit whole numbers are increased by 18 when their digits are reversed?

Mathematics
1 answer:
MA_775_DIABLO [31]4 years ago
7 0
To reverse by adding 18, the first digit must be smaller,and the second digit must be two greater.
Start with
13 -> 31
24 -> 42
35 -> 53
46 -> 64
57 -> 75
68 ->86
79 -> 97
That should be all together 7 two digit whole numbers.
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3/4 pounds make how many oz?
IRISSAK [1]

Answer:

12

Step-by-step explanation:

5 0
3 years ago
Find the LCD of the given rational equation: -3/x+2 + 5x/x-1 = x+2/x^2-3x+2
Natali [406]
Answer:

(x - 1)( x - 2) (x + 2) = x³ -x² -4x + 4.

Explanation:

1) Given equation:

    3             5x            x + 2
- ------- +  -------- =  ---------------
 x + 2        x - 1       x² - 3x + 2

2) So, the denominators are x + 2, x - 1, and x² - 3x + 2

3) The LCD is the product of the common and non common factors raised to the greatest power.

4) x + 2, and x - 1 are already prime factors

5) Factor x² - 3x + 2

x² - 3x + 2 = (x - 2)(x - 1)

6) Then, the factors are x + 2, x - 1, and x - 2, and the LCD is the product of them:
(x - 1)( x - 2) (x + 2)

7) If you expand the products (distributive property) you get:
x³ -x² -4x + 4.



5 0
3 years ago
What is 78 million in scientific notation?
mariarad [96]
78000000 in scientific notation is
7.8 x 10 ^ 7
7 0
3 years ago
Read 2 more answers
Yo i need help please ( if u can’t see the problem zoom in btw ) but fr i need to pass plz help
erastovalidia [21]

Answer:

Given no. of persons owned laptop = 76

Total of no. of students owned + Total of no. of students dont have owned laptop given = 155

No. of students dont have laptops = 155 - 76 = 79

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8 0
3 years ago
Write a polynomial that represents the are of the square
STatiana [176]

Answer:

<h2>16c² + 32cd + 16d²</h2>

Step-by-step explanation:

Area = (4c + 4d)×(4c + 4d)

        = 16c² + 16cd + 16dc + 16d²

        = 16c² + 32cd + 16d²

6 0
3 years ago
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