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SVEN [57.7K]
4 years ago
8

2.

Mathematics
1 answer:
lilavasa [31]4 years ago
7 0

Answer:

  P(1) = 0.31

Step-by-step explanation:

The total of all probabilities must be 1, so the missing number is ...

  1 - 0.33 -0.14 -0.22 = 0.31

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Rewrite each expression as a sum or difference of terms. (i) (x+3)(x-3) (ii) (x^2-3)(x^2+3) (iii) (x^15+3)(x^15-3) (iv) (x-3)(x^
klasskru [66]

Answer:

All the answers are given below.

Step-by-step explanation:

(i) (x+3)(x-3) =x² -3² =x² -9 {Since (a+b)(a-b) =a² -b²}

(ii) (x²-3)(x²+3) =(x²)² -3² =x^{4} -9 {Since (a+b)(a-b) =a² -b²}

(iii) (x^{15} +3)(x^{15}-3) =(x^{15} )^{2}-3^{2}  =x^{30}  -9

(iv) (x-3)(x²-9)(x+3) =(x²-9)(x²-9)=(x²-9)²=x^{4}-18x^{2} +81{Since, (a-b)² =a²-2ab+b²}

(v) (x²+y²)(x²-y²) = (x²)² -(y²)² =x^{4}-y^{4}

(vi) (x²+y²)² =x^{4}+2x^{2}  y^{2} +y^{4} {Since (a+b)² =a²+2ab+b²}

(vii) (x-y)²(x+y)² =(x²-y²)² =x^{4} -2x^{2} y^{2}+y^{4} {Since (a-b)² =a²-2ab+b² and (a+b)(a-b) =a²-b²}

(viii) (x-y)²(x²+y²)²(x+y)² =(x²+y²)²(x²-y²)² =(x^{4} -y^{4} )^{2} =x^{8}-2x^{4}  y^{4} +y^{8} (Answer)

5 0
4 years ago
18 = 3 • y helppppppppppppppp
nadya68 [22]

Answer:y=6 3*6=18

Step-by-step explanation:+ 6 IS Correct

4 0
3 years ago
What is the slope of the line?
Vesnalui [34]
It's a flat horizontal line so the slope is 0

Slope = rise/run = 0/run = 0

The "run" can be any number you want as long as it's not 0. 
4 0
3 years ago
Read 2 more answers
One US dollar is currently worth 0.79 euro (€). If you exchange $522 for euros, how many euros will you have?
Lapatulllka [165]

I'm pretty sure you would have 412.38 (€) because the equation would be $522 × 0.79.

6 0
3 years ago
Brayden is working two summer jobs, making $18 per hour lifeguarding and making $9 per hour clearing tables. In a given week, he
spin [16.1K]

Answer:

2 hours.

Step-by-step explanation:

Money earned for 14 hours of life-guarding = 14*18 = $252.  If he worked another 5 hours  to make the maximum of 19 he would earn 252 + 5*9

= $297  but he wants to work a minimum of hours for  a minimum of 270.

Thus we have the inequality:

252 + 9x ≤ 270

9x  ≤  18

x  ≤ 2.

So the number of hours he must do clearing tables = 2.

6 0
4 years ago
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