3 years ago

How many 2 quarter hours in half hours

Mathematics

1 answer:

Oxana [17]3 years ago

8 0

Answer:

1 1/3

Step-by-step explanation:

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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 answer this correctly Is the answer 6:07am 9:11am 6:39am 10:11am

nika2105 [10]

Answer:10:11 am

Step-by-step explanation:

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3 years ago

Rewrite this expression in addition -8-(-12)-7

Andrej [43]

Answer:

-8+(+12)+)

Step-by-step explanation:

dont know

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3 years ago

5y-8=x 3y-4=x please need help

jarptica [38.1K]

First, you set up the equation which would be 5y-8=3y-4.
-3y -3y
2y-8= -4
+8 +8
2y=4
divide by 2
y=2

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3 years ago

If 6:2=8:x, then 6x = 16 6x = 10 2x = 48 2x = 14

Talja [164]

The answer is 6x = 16

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3 years ago