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BlackZzzverrR [31]
3 years ago
15

PLEASE HELP ME!!!

Mathematics
2 answers:
ANEK [815]3 years ago
5 0

Answer with Step-by-step explanation:

We are given a function:

p(x) = 2x^5-9x^4-2x^2+12x-2

We have to find the value of p(-5) and p(3)

p(-5) = 2\times (-5)^5-9\times (-5)^4-2\times (-5)^2+12\times (-5)-2\\\\=-6250-5625-50-60-2\\\\=-11987

p(3) = 2\times 3^5-9\times 3^4-2\times 3^2+12\times 3-2\\\\=486-729-18+36-2\\\\=-227

Hence, p(-5)= -11987

and p(3)= -227

padilas [110]3 years ago
3 0

Answer:

p(-5)=-11,987

p(3)=-227

Step-by-step explanation:

To find the value of the function p(-5) just substitute x=-5 into the function expression instead of x:

p(-5)=2\cdot (-5)^5-9\cdot (-5)^4-2\cdot (-5)^2+12\cdot (-5)-2=\\ \\=-6,250-5,625-50-60-2=-11,987

To find the value of the function p(3) just substitute x=3 into the function expression instead of x:

p(3)=2\cdot 3^5-9\cdot 3^4-2\cdot 3^2+12\cdot 3-2=\\ \\=486-729-18+36-2=-227

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Answer:

The value of A is 5

Step-by-step explanation:

- The number is divisible by 3 if the sum of its digits is a number

  divisible by 3

- Ex: 126 is divisible by 3 because the sum of its digits = 1 + 2 + 3 = 6

  and 6 is divisible by 3

- The number is divisible by 5 if its ones digit is zero or 5

- Ex: 675 is divisible by 5 because its ones digit is 5

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- We are looking for the value of A in the 4-digit number 3A5A which

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∵ A is in the ones position

∴ A must be zero or 5

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∴ The number is 3050

∵ The sum of the digits of the number = 3 + 0 + 5 + 0 = 8

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∴ A must be equal 5

* <em>The value of A is 5</em>

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3 years ago
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wheee



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