3 years ago

A class is attended by 18 girls and 24 boys write the ratio of girls to boys in the class as a fraction in lowest terms

Mathematics

2 answers:

Tomtit [17]3 years ago

4 0

Answer:

18:24 simplified from is 3:4

Liono4ka [1.6K]3 years ago

3 0

4:3 this is the answer because they are both divisible by 6 and it’s boys to girls

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Help, with solving rational equations! I am no good at it :( Solve for x: 2 over 5 plus 3 over 5 x equals quantity x plus 5 over

mamaluj [8]

If this is your equation: $\frac{2}{5} + \frac{3}{5x} = \frac{x+5}{10}$
Solution:
LCD for 5 and 5x is 5x
$\frac{x}{x} ( \frac{2}{5} )+ \frac{3}{5x} = \frac{x+5}{10}$
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$10(2x+3)=5x(x+5)$ ←cross product
20x + 30 = 5x² + 25x ←simplify with distributive property
0 = 5x² + 5x - 30 ←use inverse operations to collect all terms on one side
0 = x² + x - 6 ←if possible divide by numerical GCF (This case 5)
0 = (x + 3)(x - 2) ←Factor
x = -3 or x = 2
Please check by substitution in original equation... Both work

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3 years ago

A rectangular athletic field is three times as long as it is wide. If the perimeter of the athletic field is 128 yards, what are

larisa [96]

Length=3x
Width=x
3x+x+3x+x=128
8x=128
Divide both sides by 8
x=16
3(x)
3(16)=58
Width= 16 yards
Length= 58 yards

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3 years ago

the 25 members of the reading club are buying a book to discuss at the next meeting but Club leader got a special price the book

Sever21 [200]

25*8.14=?

Multiply the cost of the book per person ($8.14) by the number of people (25).

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4 years ago