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2 years ago

Which Expression is equivalent to -0.3(1.5x-0.6)-2(-0.4+0.9x)

Mathematics

2 answers:

Llana [10]2 years ago

5 0

The right answer is of option D.

Hope it will help u....

zhannawk [14.2K]2 years ago

5 0

I the correct answer is D

Hope that helps

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What is the expanded form to 103,727,495

artcher [175]

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3 years ago

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Simplify the expressions by combining like terms 10r - 5r + 3r - 8r

Yuri [45]

Answer:

Step-by-step explanation:

Combine like terms, perform the operations with the coefficients of the variable, then write the variable.

10r - 5r + 3r - 8r

= 5r + 3r - 8r

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2 years ago

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Help me I need the answer to #2 and #4

Karo-lina-s [1.5K]

Number 2 is 84.13
number 4 is 56

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2 years ago

(10 points) Suppose you are rolling a fair die 600 times independently. Let X count the number of sixes that appear. (a) What ty

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Answer:

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2 years ago

19. The numerator of a fraction is 1 less than the denominator.

yulyashka [42]

Let the original fraction be

$\dfrac{n-1}{n}$

Now let's increase both numerator and denominator by 2:

$\dfrac{n+1}{n+2}$

This produces a 1/12 increase:

$\dfrac{n+1}{n+2}-\dfrac{n-1}{n}=\dfrac{1}{12}$

The left hand side can be rearranged as

$\dfrac{2}{n^2+2n}=\dfrac{1}{12}$

Invert both sides:

$\dfrac{n^2+2n}{2}=12 \iff n^2+2n=24$

Solve the quadratic equation:

$n^2+2n-24=0 \iff n=-6 \lor n=4$

So, in the first case, the original fraction is

$\dfrac{n-1}{n}=\dfrac{-6-1}{-6}=\dfrac{7}{6}$

In the second case, we have

$\dfrac{n-1}{n}=\dfrac{4-1}{4}=\dfrac{3}{4}$

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2 years ago