3 years ago

A number increased by five and then divided by two

Mathematics

1 answer:

borishaifa [10]3 years ago

3 0

$\frac{n + 5}{2}$ is the proper fraction.

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Which ones are parallel?

amid [387]

The answer is : a||b

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3 years ago

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Can someone help, please

Artist 52 [7]

Answer:

Slope is 1/4

Step-by-step explanation:

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6. Polynomial Division<br> Divide. (3x4 – 3x3 – 6x –10) ÷ (x – 2)

vovangra [49]

Answer:

Quotient = -6

Remainder = -19

Step-by-step explanation:

(3*4 - 3*3 - 6x-10) / (x-2)

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= (-6x -7) / (x-2)

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3 years ago

Which decimal is closest in value to the fraction below 1/9 ?<br>a) 0.111<br>b) .33333<br>c) 0.7

frosja888 [35]

1/9=0.11111.....
so the correct option is (a).

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3 years ago

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Find the length of the tangent segment AB to the circles centered at O and O' whose radii are a and b respectively when the circ

bixtya [17]

Answer:

$AB=2\sqrt{ab}$

Step-by-step explanation:

From figure,

$OA=a, \quad \quad O'B=b\\\Rightarrow OO'= (a+b) \quad \quad \text{and}\quad OD=(a-b)$

In triangle $OO'D$

$(OO')^2=(OD)^2+(O' D)^2$

$\Rightarrow (a+b)^2=(a-b)^2+(O' D)^2\\\Rightarrow a^2+b^2+2ab-a^2-b^2+2ab=(O' D)^2\\\Rightarrow 4ab=(O' D)^2\\\Rightarrow O'D=2\sqrt{ab} \\\Rightarrow O' D=2\sqrt{ab}=AB \quad \quad [\because O' DAB\;\; \text{is a rectangle.}]$

Hence, $AB=2\sqrt{ab}$

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3 years ago