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ArbitrLikvidat [17]
3 years ago
13

2/5n+1/10=1/2(n+4) is this no solution?

Mathematics
1 answer:
Anarel [89]3 years ago
3 0

\dfrac{2}{5}n+\dfrac{1}{10}=\dfrac{1}{2}(n+4)\ \ \ |\cdot10\\\\10\cdot\dfrac{2}{5}n+10\cdot\dfrac{1}{10}=10\cdot\dfrac{1}{2}(n+4)\\\\2\cdot2n+1=5(n+4)\ \ \ \ |\text{use distributive property}\\\\4n+1=(5)(n)+(5)(4)\\\\4n+1=5n+20\ \ \ |-1\\\\4n=5n+19\ \ \ \ |-5n\\\\-n=19\ \ \ |\cdot(-1)\\\\\boxed{n=-19}

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professor190 [17]

Answer:

306 calories

Step-by-step explanation:

By looking at the problem, we can conclude the number of chicken nuggets and the calories are directly related, when the amount of chicken nuggets go up, the calories also go up, proportionally. Because of this, we can set up an equation:

6 / 204 = 9 / x

Where x is the amount of calories in 9 chicken nuggets.

Now, we can simplify by cross multiplying:

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3 years ago
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The image of the point (2, 4) under a translation is (1, 1). Find the
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Answer:

Step-by-step explanation:

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3 years ago
A triangle with vertices at A(0, 0), B(0, 4), and C(6, 0) is dilated to yield a triangle with vertices at A′(0, 0), B′(0, 10), a
sineoko [7]
ANSWER

The scale factor is
2.5

EXPLANATION

The given triangle has vertices,

A(0,0),B(0,4),\:and\:C(6, 0).

The vertices of the image triangle is,

A'(0,0),B'(0,10),\:and\:C'(15, 0).

The scale factor is given by

k = \frac{image \: length}{object \: length}

So we can use any of the corresponding sides to determine the scale factor,

k = \frac{|A'B'|}{ |AB|}

k = \frac{ |10 - 0| }{ |4 - 0|}

k = \frac{ |10| }{ |4 |} = \frac{10}{4} = 2.5

Or

k = \frac{|A'C'|}{ |AC|}

k = \frac{ |15 - 0| }{ |6 - 0|}

k = \frac{ |15| }{ |6|} = \frac{15}{6} = 2.5


Or

k=\frac{|B'C'|}{|BC|}

k = \frac{\sqrt{(15 - 0)^2+(0-10)^2 }}{\sqrt{(6 - 0)^2+(0-4)^2}}

k = \frac{ 5\sqrt{13}}{2\sqrt{13}} = \frac{5}{2} = 2.5

The correct answer is C
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3 years ago
Is .8749 greater than or less than .05
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Answer:

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3 years ago
this is kinda confusing but it says “if 1 cm represents 2 meters, how long would each measurement be on an actual basketball cou
frosja888 [35]

Answer:

  • 28 m
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Step-by-step explanation:

The given statement is the scale factor:

  \dfrac{\text{scale distance}}{\text{actual distance}}=\dfrac{1\text{ cm}}{2\text{ m}}

This can be rearranged to the formula ...

  \text{actual distance}=\text{(scale distance)}\dfrac{2\text{ m}}{1\text{ cm}}

Filling in the given scale distances, you find the actual distances to be ...

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