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devlian [24]
3 years ago
9

Evaluate the following expression when x = -5 and y = 25.

Mathematics
1 answer:
kykrilka [37]3 years ago
3 0

Answer:

<u>The correct answer is A. 3,120.</u>

Step-by-step explanation:

Let's solve the expression for x = -5 and y = 25, this way:

(5|x| - y³)/x

Replacing x and y, we have:

(5 * 5 - 25³)/-5 (Absolute value of -5 is 5 in the numerator but we keep it without changes in the denominator)

(25 - 15,625)/-5

-15,600/-5

3,120

<u>The correct answer is A. 3,120.</u>

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Maslowich
So, 3 goes into 8 2 times and 2 will be left over so you would put:
2 2/8 or 2 1/4

7 0
2 years ago
What is the greatest common factor of 9x^{2}y9x 2 y and 5x^{4}y^{2}5x 4 y 2 ?
Musya8 [376]
ANSWER

The greatest common factor is
{x}^{2} y

EXPLANATION

We want to find the greatest common factor of

9 {x}^{2} y

and

5 {x}^{4}  {y}^{2}

The prime factorizations are;


9 {x}^{2} y =  {3}^{2}  \times  {x}^{2}  \times y


and


5 {x}^{4}  {y}^{2}  = 5 \times  {x}^{4}  \times  {y}^{2}


The product of the least powers of the common factors is the greatest common factor.


=  {x}^{2} y
7 0
3 years ago
How you do multiply complex numbers ? Example : (9 - 4i) (8 + 6i)
Andrew [12]

You multiply them just as you would multiply any normal polynomials, except there is a special rule. Since we know that i = √-1, the rule is that i² = -1. So, let's multiply:

(9-4i)(8+6i) = 72+54i-32i-24i^2

Let's simplify this:

72+22i+(-24*-1)

72+22i+24 = 96+22i

Therefore, your answer is 96 + 22i.

6 0
3 years ago
Amanda bought 19 packs of cookies for $22.99 from the supermarket. How many packs of cookies can she buy for $59.29?
lbvjy [14]

Answer:

49

Step-by-step explanation:

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5 0
2 years ago
Please answer the top half ASAP I need it in 2h please
NeTakaya

Answer:

  1. 4/7
  2. 6/11
  3. 12/17
  4. 19/30
  5. 10/17
  6. 7/15
  7. 11/28
  8. 8/21
  9. 7/3
  10. 23/49
  11. 3/7
  12. 1/2
  13. 4/7
  14. 5/22
  15. 3/7
  16. 3/4
  17. 1/3
  18. 1/10
  19. 3/8
  20. 1/2
  21. 3/8
  22. 4/7
  23. 65/168
  24. 8/21
  25. 40/63
  26. 4/3
  27. 1/2
  28. 9/7
  29. 9/5
  30. 21/44
4 0
3 years ago
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