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2 years ago

.The expressions 25x - (6x + 12) and (25x - 6x) + 12 are

Mathematics

2 answers:

nalin [4]2 years ago

8 0

The answer is the second one

Kay [80]2 years ago

5 0

Answer:

O equivalent by the associative property of addition

Step-by-step explanation:

Associative Property = a property of some binary operations, which means that rearranging the parentheses in an expression will not change the result

Which means that you can change the expression 25x - (6x+12) without changing the answer. So, the changed result would be (25x-6x) + 12.

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Factor n2 + 8n + 12 completely.

spin [16.1K]

Answer:

(+2)(+6)

Step-by-step explanation:

2+8+12

:) Hope this helped

4 0

2 years ago

Read 2 more answers

recent survey found that 71% of all adults over 50 wear glasses for driving. In a random sample of 30 adults over 50, what is

valentina_108 [34]

Answer:

Mean = 21.3

Standard Deviation = 2.48

Step-by-step explanation:

We are given the following in the question:

p = 71% = 0.71

Sample size, n = 30

We have to find the mean and the standard deviation of those that wear glasses.

$\text{Mean} = np\\=30(0.71)\\=21.3$

Thus, the mean of those who wear glasses is 21.3

$\text{Standard deviation} = \sqrt{npq}\\=\sqrt{np(1-p)}\\=\sqrt{30\times 0.71\times (1-0.71)}\\=2.48$

Thus, the standard deviation of those who wear glasses is 2.48

5 0

2 years ago

Andre will follow the same recipe. He will make b loaves of banana bread f cups of flour. which of these equations represents th

Monica [59]

Answer:

Please, is this question compete?

7 0

2 years ago

Compute the difference quotient StartFraction f left parenthesis x plus h right parenthesis minus f left parenthesis x right par

kenny6666 [7]

Answer:

$\dfrac{f(x+h) - f(x)}{h}=-8x-4h-3$

Step-by-step explanation:

$f(x)=-4x^2-3x-4$

$f(x+h)=-4(x+h)^2-3(x+h)-4$

$f(x+h)=-4(x^2+2xh+h^2)-3(x+h)−4$

$f(x+h)=-4x^2-8xh-4h^2-3x-3h-4$

$f(x+h) - f(x)=-4x^2-8xh-4h^2-3x-3h-4-(-4x2-3x-4)$

$f(x+h) - f(x)=-4x^2-8xh-4h^2-3x-3h-4+4x2+3x+4$

$f(x+h) - f(x)=-8xh-4h^2-3h$

$f(x+h) - f(x)=h(-8x-4h-3)$

$\dfrac{f(x+h) - f(x)}{h}=\dfrac{h(-8x-4h-3)}{h}$

$\dfrac{f(x+h) - f(x)}{h}=-8x-4h-3$

7 0

3 years ago

Use the graph at the right to determine whether each system has no solution, one solution, or infinitely many solutions.

Fynjy0 [20]

The answer 4.4 I just did it on edge

6 0

3 years ago