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enot [183]
2 years ago
9

PLLLLLEASE T_T PLLLEASE

Mathematics
1 answer:
maxonik [38]2 years ago
4 0

{\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

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The side length of a square patio is 2.59 meters. Which is the best estimate for the perimeter of the patio, in meters?
Alex787 [66]

Hey there! I'm happy to help!

The perimeter is all of the sides of a shape added up.

Since all of the sides on a square are the same and we know one side, we just multiply it by four.

2.59(4)=10.36

Therefore, the patio is about 10.56 meters.

I hope that this helps! :D

8 0
3 years ago
Anyone know this geometry question? Will give brainiest
Dafna11 [192]
The opposite angles equal each other, so X and Z are equal
 using that we solve for x by setting them equal:

6x-60 = 2x+68

subtract 2x from each side:

4x -60 = 68

add 60 to each side:

4x = 128
 divide both sides by 4
x = 128/4
x = 32

now we know x so we can solve everything else by replacing x with 32

WY = 3x+5 = 3(32)+5 = 96+5 = 101

angle Z = 2x+68 = 2(32)+68 = 64+132

the answer is C


5 0
2 years ago
6/15=3/x solve for x
denis23 [38]

Answer:15/2


Step-by-step explanation:


3 0
3 years ago
Read 2 more answers
2.
laiz [17]

Answer:

B) 0.02

Step-by-step explanation:

<u>Use the Binomial Theorem</u>

\displaystyle P(X=x)=\binom{n}{x}p^xq^{n-x}\\\\P(X=4)=\binom{30}{4}(0.30)^4(1-0.30)^{30-4}\\\\P(X=4)=\frac{30!}{4!(30-4)!}(0.30)^4(0.70)^{26}\\ \\P(X=4)=\frac{30!}{4!(26)!}(0.30)^4(0.70)^{26}\\ \\P(X=4)=\frac{30*29*28*27}{4*3*2*1}(0.30)^4(0.70)^{26}\\ \\P(X=4)=27405(0.30)^4(0.70)^{26}\\\\P(X=4)\approx0.0208

We have the probability of success, p=0.30, and the probability of failure, q=1-0.30=0.70. The binomial coefficient, \binom{n}{k}, represents the amount of possible combinations that k items can be chosen out of n items, with its respective formula \frac{n!}{k!(n-k)!}.

Hence, the best choice for the probability that 4 students chosen at random from the class of 30 that want the next test to be on Monday will be option B, 0.02

7 0
2 years ago
What is the value of p in the question below. 10x9/2x4= px 5
ycow [4]

Answer:

p = 5

Step-by-step explanation:

We have that:

\frac{x^{a}}{x^{b}} = x^{a-b}

So

\frac{x^{9}}{x^{4}} = x^{9-4} = x^{5}

10/2 = 5

Then

\frac{10x^{9}}{2x^{4}} = 5x^{9-4} = 5x^{5}

Finding p:

5x^{5} = px^{5}

p = \frac{5x^{5}}{x^{5}}

p = 5

7 0
2 years ago
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