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Kruka [31]
3 years ago
15

Please answer this questions please. Will mark brainliest!!! The one with red circled.

Mathematics
1 answer:
patriot [66]3 years ago
3 0

Answer/Step-by-step explanation:

1.a)(iv). \frac{1}{6} + (-\frac{7}{8}

Positive multiplied by negative = negative

\frac{1}{6} - \frac{7}{8}

\frac{4 - 21}{24} = \frac{-17}{24} = -\frac{17}{24}

2a.) 73.48 +(-37.3)

Note: + * - = -

73.48 - 37.3 = 36.18

3c.) 3\frac{3}{4} ÷ (-4\frac{2}{7})

Convert to proper fraction

\frac{15}{4} ÷ (-\frac{30}{7})

Change ÷ to × and flip the fraction on your right upside down

\frac{15}{4} * (-\frac{7}{30})

-\frac{15*7}{4*30}

-\frac{1*7}{4*2} = -\frac{7}{8}

3d.) -52.25 ÷ (-5.5) = \frac{-52.25}{-5.5}

(Note: - ÷ - = + )

\frac{-52.25}{-5.5} = 9.5

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4 years ago
9-(-0.87)-0.3 will someone please help me I can’t remember how todo this and my kid needs my help!
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Answer: 9.57

Step-by-step explanation:

do 9 - -0.87 first.

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1 year ago
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Can you solve: 6/5=n+2/2n-3​
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solving \frac{6}{5}=\frac{n+2}{2n-3} we get value of n: n=4

Step-by-step explanation:

Solving the expression:

\frac{6}{5}=\frac{n+2}{2n-3}

Solving:

\frac{6}{5}=\frac{n+2}{2n-3}\\Cross\,\,multiply:\\6(2n-3)=5(n+2)\\Simplifying:\\12n-18=5n+10\\Combining\,\,like\,\,terms:\\12n-5n=10+18\\7n=28\\n=\frac{28}{7}\\n=4

So, solving \frac{6}{5}=\frac{n+2}{2n-3} we get value of n: n=4

Keywords: Solving Expressions

Learn more about Solving Expressions at:

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  • brainly.com/question/2586096
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Answer:

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Like systems of equations, system of inequalities can have zero, one, or infinite solutions.

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The length of a rectangle is x times the square root of 100. The width is one-half y more than three-halves x. Given that the ar
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Answer:

15x^2+5xy-125=0

Step-by-step explanation:

We are give the following in the question:

Dimensions of rectangle:

Length , l =

l = x\sqrt{100} = 10x

Width of rectangle, w =

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Area of rectangle =

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Putting values, we get,

125 = 10x\times (\dfrac{y}{2}+\dfrac{3x}{2})\\\\125 = 5xy+15x^2\\15x^2+5xy-125=0

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