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Sergio [31]
3 years ago
9

What is the decimal equivalent of the 15/8

Mathematics
1 answer:
ElenaW [278]3 years ago
6 0

Answer:

A) 15.8

Step-by-step explanation:

10/8 = .80

15+ .80 = 15.8

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This is a proportion. What is the value of X?
Verizon [17]

Answer:

x = 15 or x = - \frac{2}{5}

Step-by-step explanation:

Cross- multiplying gives

(14x + 6)(17x + 5) = 9x(27x + 11) ( expanding factors )

238x² + 172x + 30 = 243x² + 99x

rearrange into standard form : ax² + bx + c = 0

5x² - 73x - 30 = 0 ← in standard form

consider the factors of the product 5 × - 30 = - 150 which sum to the coefficient of the x-term (- 73 )

the factors are - 75 and + 2

Use these factors to split the middle term

5x² - 75x + 2x - 30 = 0 ( factor by grouping )

5x(x - 15) + 2(x - 15) = 0 ← take out the factor (x - 15)

(x - 15)(5x + 2) = 0

equate each factor to zero and solve for x

x - 15 = 0 ⇒ x = 15

5x + 2 = 0 ⇒ x = - \frac{2}{5}


7 0
3 years ago
Multiply.Write each product in simplest form
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4 0
3 years ago
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I'm doing elimination in systems of equations how do I solve this?????? Help!!!
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7 0
3 years ago
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poizon [28]

Answer:

3x>18

Step-by-step explanation:

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So, we can write,

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5 0
2 years ago
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7 0
2 years ago
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