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3 years ago

PLS HELP ME! FOR 50 POINTS!!! I will give brainliest!

Mathematics

1 answer:

lbvjy [14]3 years ago

8 0

Answer:

$\frac{x - 3}{x + 4} \div \frac{x ^{2} - 1 }{ x} \\ = \frac{x - 3}{x + 4} \times \frac{x}{ {x}^{2} - 1} \\ =\frac{x(x - 3)}{(x + 4)( {x}^{2} - 1) } \\= \frac{x(x - 3)}{(x + 4)(x + 1)(x - 1)}$

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PLLLLLEASE T_T PLLLEASE

maxonik [38]

${\qquad\qquad\huge\underline{{\sf Answer}}}$

let's solve ~

$\qquad \sf \dashrightarrow \: \cfrac{4}{y - 6} + \cfrac{5}{y + 3} = \cfrac{7y - 4}{ {y}^{2} - 3y - 18}$

$\qquad \sf \dashrightarrow \: \cfrac{4(y + 3) + 5(y - 6)}{(y - 6)(y + 3)} = \cfrac{7y - 4}{ {y}^{2} - 3y - 18}$

$\qquad \sf \dashrightarrow \: \cfrac{4y + 12 + 5y - 30}{ {y}^{2} + 3y - 6y - 18 } = \cfrac{7y - 4}{ {y}^{2} - 3y - 18}$

$\qquad \sf \dashrightarrow \: \cfrac{9y - 18}{ {y}^{2} - 3y - 18 } = \cfrac{7y - 4}{ {y}^{2} - 3y - 18}$

$\qquad \sf \dashrightarrow \: 9y - 18 = 7y - 4$

[ denominator is same, so numerator must have same value to be equal ]

$\qquad \sf \dashrightarrow \: 9y - 7y = - 4 + 18$

$\qquad \sf \dashrightarrow \: 2y = 14$

$\qquad \sf \dashrightarrow \: y = 7$

4 0

2 years ago

how many of the first 80 positive integers can he written as the sum of two distinct powers of 3? for example, 28=27+1=3^3+3^0 c

lina2011 [118]

Answer:6

Step-by-step explanation:

8 0

3 years ago

PLEASE HELP I NEED THIS NOW WILL GIVE BRAINLIEST!

kvasek [131]

Answer:

Step-by-step explanation:

The edge

8 0

2 years ago

A fish tank contains 3 of water and is one-fourth full. How many quarts of water does the fish tank hold all together?

DIA [1.3K]

The fish tank holds 48 quarts of water

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3 years ago

5. The length of a rectangular swimming pool is 50 yards, and the width of the pool is 16

d1i1m1o1n [39]

The answer is C. I got this by doing a^2 + b^2= c^2. 50^2 + 16^2=c^2, 2500 + 256 = c^2, 2756 = c^2, then you take the square root of 2756 and that gives you your answer 52.50 yards. Hope this helps :D

7 0

3 years ago