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AfilCa [17]
3 years ago
9

how do you solve distributive properties ?? and pre algebraic expressions/equations i have a test over it all and i'm in 7th gra

de plz help ASAP
Mathematics
1 answer:
professor190 [17]3 years ago
4 0

Answer:

I was totally in your shoes then..

Step-by-step explanation:

Watch Fort Bend Tutoring on YT, he got me through those math problems...I can assure it will help, and he makes Math fun

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For the rational expression 2x^2-7x-15/x^2-25, do both of the following,
Mrrafil [7]

Answer:

a. \frac{2x + 3}{x+5}

b. x ≠ -5 (Vertical asymptote) and x ≠ 5 (Hole)

Step-by-step explanation:

Factor the numerator (Grouping):

2x^2 - 7x - 15              

Two numbers that multiply to -30 and add to -7 = -3 and 10

[2x^2 - 10x] + [3x - 15]

(2x + 3)(x - 5)

Factor the denominator (Difference of Two Squares):

x^2 - 25 = (x +5)(x-5)

Factored Expression:

(x - 5) can be factored out of top and bottom as a hole-

\frac{(2x + 3)(x - 5)}{(x + 5)(x - 5)} = \frac{2x + 3}{x+5}

Variable Restrictions:

Denominator ≠ 0

x + 5 = 0\\x = -5

Vertical asymptote at x = -5 ⇒ x ≠ -5

3 0
3 years ago
PLEASE HELP NOW --- >N is a 2-digit even number. If the last two digits of N^2 is the same as N, what is the sum of digits of
taurus [48]

Answer:

76.

Step-by-step explanation:

It is given that N is a 2-digit number.

Last two digits of N^2 is the same as N.

We know that, a number is even if it ends with 0,2,4,6,8.

2^2=4,4^2=16,6^2=36,8^2=64

If 0 is in end then we get two zeros in the square of that number.

It is clear that, number should ends with 6 to get the same number at the end.

16^2=256

26^2=676

36^2=1296

46^2=2116

56^2=3136

66^2=4356

76^2=5776

86^2=7396

96^2=9216

It is clear that last two digits of (76)^2 is the same as 76.

Therefore, the required number is 76.

6 0
3 years ago
Pleasee helpp
max2010maxim [7]

Answer:

the answer is D because "difference" is a key word for subtraction

Step-by-step explanation:

8 0
2 years ago
two years ago jenny was four times as old as helen. six years from now jenny will be twice as old as helen. how old are the girl
Elina [12.6K]
What  type of teacher would give a frustrating problem like this?!?
5 0
3 years ago
Read 2 more answers
well if fiona multiplies a number by 2 thirds the product is greater than 2 thirds which could be that number that fiona multipl
DIA [1.3K]

Answer:

it will be B) 6/5 because thats the only thing that would get you a greater number then 2/3

Step-by-step explanation:

5 0
3 years ago
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