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4 years ago

Find the product.(0.5n 5)2(10n 7) 3

Mathematics

2 answers:

sergejj [24]4 years ago

7 0

Your product would be
$(0.5n5)2(10n7)3$

son4ous [18]4 years ago

3 0

The following is just a guess because I'm not sure what the problem is.

$(0.5n^5)^2(10n^7)^3 =$

$= 0.5^2 \times (n^5)^2 \times 10^3 \times (n^7)^3$

$= 0.25 \times 1000 \times n^{10} \times n^{21}$

$= 250n^{31}$

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Find x.......................................................

lidiya [134]

Answer:

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${24}^{2} + {x}^{2} = {30}^{2} \\ 576 + {x}^{2} = 900 \\ {x}^{2} = 900 - 576 \\ {x}^{2} = 324 \\ x = \sqrt{324} \\ x = 18$

5 0

4 years ago

A line passes through (9, –9) and (10, –5).Write an equation for the line in point-slope form.

Ket [755]

bearing in mind that standard form for a linear equation means

• all coefficients must be integers, no fractions

• only the constant on the right-hand-side

• all variables on the left-hand-side, sorted

• "x" must not have a negative coefficient

$\bf (\stackrel{x_1}{9}~,~\stackrel{y_1}{-9})\qquad (\stackrel{x_2}{10}~,~\stackrel{y_2}{-5}) \\\\\\ slope = m\implies \cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{-5-(-9)}{10-9}\implies \cfrac{-5+9}{1}\implies \cfrac{4}{1}\implies 4$

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quick note:

the "x" must not have a negative coefficient for the standard form, though in this case it shows like so in the inappropriate choices above.

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3 years ago

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Elenna [48]

Answer:

Step-by-step explanation:

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3 years ago

A family of 8 went out to dinner. Each person either ordered the lobster dinner, which costs $25, or the steak dinner which cost

defon

Answer: 6 people ordered for the lobster dinner.

2 people ordered for the steak dinner.

Step-by-step explanation:

Let x represent the number of people that ordered the lobster dinner.

Let y represent the number of people that ordered the steak dinner.

A family of 8 went out to dinner. This means that

x + y = 8

Each person either ordered the lobster dinner, which costs $25, or the steak dinner which cost $20. The total cost of all the meals is $190. This means that

25x + 20y = 190 - - - - - - - - - -- -1

Substituting x = 8 - y into equation 1, it becomes

25(8 - y) + 20y = 190

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3 years ago

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3 0

3 years ago

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