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Fittoniya [83]
3 years ago
6

ULT ma 4. Write an expression, then evaluate. a. 1/4of the sum of 18 and 6

Mathematics
1 answer:
OlgaM077 [116]3 years ago
8 0

Answer: Required expression: \dfrac14\times(18+16)

Result: \dfrac{17}{2}

Step-by-step explanation:

Given phrase:  " \dfrac14\text{ of the sum of } 18\text{ and }6. "

Required expression: \dfrac14\times(18+16)    ['+' used to express sum, 'x' used in place of 'of']

Since 18+16 = 34

Then,

\dfrac14\times(18+16)=\dfrac14\times34  \\\\=\dfrac{1}{2}\times17\ \ \text{[Divide numerator and denominator by 2]}\\\\=\dfrac{17}{2}

Hence,     \dfrac14\times(18+16)=\dfrac{17}{2}.  

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9. a_n=7+6n

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9. Given the sequence

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