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Alenkinab [10]
3 years ago
12

Which expression is equivalent to (7x-5) - (3x - 2)

Mathematics
2 answers:
LuckyWell [14K]3 years ago
6 0

Answer:

(c) 4x - 7

Step-by-step explanation:

7x - 3x

= -4x

-5 -2

= -7

4x - 7

zalisa [80]3 years ago
6 0
The answer to the problem is c) 4x-7
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22,22 min

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2 years ago
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Solve by elimination
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2x - 2y = -4
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-1x - 5y = -4

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3 years ago
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Let f(x)=4x-1 and g(x)=2x^2+3. Perform each function operations and then find the domain.
Triss [41]
F(x) = 4x - 1
g(x) = 2x² + 3

1. (f + g)(x) = (4x - 1) + (2x² + 3)
    (f + g)(x) = 2x² + 4x + (-1 + 3)
    (f + g)(x) = 2x² + 4x + 2
    Domain: {x| -∞ < x < ∞}, (-∞, ∞)

2. (f - g)(x) = (4x + 1) - (2x² + 3)
    (f - g)(x) = 4x + 1 - 2x² - 3
    (f - g)(x) = -2x² + 4x + 1 - 3
    (f - g)(x) = -2x² + 4x - 2
    Domain: {x|-∞ < x < ∞}, (-∞, ∞)
3. (g - f)(x) = (2x² + 3) - (4x - 1)
    (g - f)(x) = 2x² + 3 - 4x + 1
    (g - f)(x) = 2x² - 4x + 3 + 1
    (g - f)(x) = 2x² - 4x + 4
    Domain: {x| -∞ < x < ∞}, (-∞, ∞)

4. (f · g)(x) = (4x + 1)(2x² + 3)
    (f · g)(x) = 4x(2x² + 3) + 1(2x² + 3)
    (f · g)(x) = 4x(2x²) + 4x(3) + 1(2x²) + 1(3)
    (f · g)(x) = 8x³ + 12x + 2x² + 3
    (f · g)(x) = 8x³ + 2x² + 12x + 3
    Domain: {x| -∞ < x < ∞}, (-∞, ∞)

5. (\frac{f}{g})(x) = \frac{4x - 1}{2x^{2} + 3}
    Domain: 2x² + 3 ≠ 0
                         - 3  - 3
                        2x² ≠ 0
                         2      2
                          x² ≠ 0
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6. (\frac{g}{f})(x) = \frac{2x^{2} + 3}{4x - 1}
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                (-∞, 0) ∨ (0, ∞)
6 0
3 years ago
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statuscvo [17]
25% of something is 5000000, so total is 4*5000000 = 20 million
7 0
3 years ago
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Dan factored x^2+121 into (x+1-11)
babunello [35]

Answer:

Your question is a little unclear.  If you are just trying to factor x² + 121, it's prime.  (can't be factored using real numbers).

Step-by-step explanation:

The difference of two squares is a special form.  a² - b² = (a+b)(a-b).  

But, the sum of two squares is prime.  a²+ b² cannot be factored.

4 0
3 years ago
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