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Alika [10]
3 years ago
7

1. Which is equivalent to the expression below? (3.x2 – 2x + 5) - (2x2 – 5x + 1)

Mathematics
2 answers:
antiseptic1488 [7]3 years ago
7 0

Answer:

x^2   + 3x    + 4

Step-by-step explanation:

(3.x2 – 2x + 5) - (2x2 – 5x + 1)    Combine like terms:  x^2, x and constants:

3x^2 - 2x^2  -2x + 5x  + 5 - 1

This condenses to

     x^2   + 3x    + 4

Nana76 [90]3 years ago
5 0

Answer:

x = 6

x = 1

Step-by-step explanation:

(3x² - 2x + 5) - (2x² - 5x + 1)

= 3x² - 2x² - 2x - 5x + 5 + 1

= x² - 7x + 6

= (x - 6)(x - 1)

x - 6 = 0

x = 6

x - 1 = 0

x = 1

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Paul is three times as old as Mary and Peter is four times as old as Mary,If the sum of their ages is 64, how old are Peter,Paul
uysha [10]
Let Mary's age be x.

Paul is three times as old as Mary, so Paul's age would be 3x.

Peter is four times as old as Mary, so Peter's age would be 4x.

The sum of their ages is 64
⇒ Paul's age+ Peter's age+ Mary's age= 64
⇒ 3x+ 4x+ x= 64
⇒ 8x= 64
⇒ x= 64/8
⇒ x= 8

Paul's age is: 3x= 3*8= 24

Peter's age is: 4x= 4*8= 32

Final answer: Paul is 24 years old.
Peter is 32 years old.
Mary is 8 years old.

Hope this helps~
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Step-by-step explanation:


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bazaltina [42]
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3 years ago
How I solve 11−12y=3+6x for y.
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2. Based on the table below, determine the exponential function being used. Use x as your variable. Then, evaluate this expressi
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Answer:

y=5^{x}\\y=5^{7}=78125

Step-by-step explanation:

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