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ryzh [129]
2 years ago
8

Ahmad had 6/7 of a spool of yarn. He used 2/5 of his yarn for a project. What fraction of the spool was used for the project?

Mathematics
1 answer:
GaryK [48]2 years ago
4 0

Answer:

\dfrac{12}{35}

Step-by-step explanation:

2/5 ths of 6/7 ths:

\implies \dfrac67 \times \dfrac25=\dfrac{6\times 2}{7\times5}=\dfrac{12}{35}

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|-3 + 15| what is the sum (answer) ? I think it is 12 but my friend thinks it is 18. Who is right?
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Evaluate the following.<br> (iii) sin 30° + tan 40° - cosec 60° / cot 45° + cos 60° - sec 30°​
bearhunter [10]

Sin 30 = 1/2

tan 45 = 1

Cosec 60 = 2 / √3 = 2√3 / 3

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_______________________________

[ 1/2 + 1 - 2√3/3 ] ÷ [ 1 + 1/2 - 2√3/3 ] = <em>1</em>

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4 0
3 years ago
The area of a rectangle is 63m^2 and the length of the rectangle is 11m more than twice the width. Find the length and width.
AleksandrR [38]

Answer:

width = 3.5 m

length = 18 m

Step-by-step explanation:

area = length x width

x is the width then length = 2x + 11

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The formula to solve a quadratic equation of the form ax^2 + bx + c = 0 is equal to x = [-b +/-√(b^2 - 4ac)]/2a

with a = 2

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substitute in the formula

x = [-11 +/- √(11^2 - 4(2)(-63))]2(2)

x = [-11 +/- √(121 + 504)]/4

x = [-11 +/- √625]/4

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since width can't be a negative number, x is 3.5

length = 2x + 11 = 2(3.5) + 11 = 18

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2 years ago
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Vesna [10]

Answer:

Noah types faster

Step-by-step explanation:

Andre's typing speed per minute - 52 words per minute

\frac{208}{4} = 52

Noah's typing speed per minute - 57 words per minute

\frac{342}{6} = 57

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3 years ago
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