Find the number missing from the following equivalent fractions: 12/16= 3/?
2 answers:
Answer:
Step-by-step explanation:
In this question we are presented with and we want to simplify to have a numerator of 3. When simplifying fractions it's important to do the operation on both the numerator and the denominator so,
→ Half the numerator and the denominator →
→ Half the numerator and the denominator again →
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Notice that
13 - 9 = 4
17 - 13 = 4
so it's likely that each pair of consecutive terms in the sum differ by 4. This means the last term, 149, is equal to 9 plus some multiple of 4 :
149 = 9 + 4k
140 = 4k
k = 140/4
k = 35
This tells you there are 35 + 1 = 36 terms in the sum (since the first term is 9 plus 0 times 4, and the last term is 9 plus 35 times 4). Among the given options, only the first choice contains the same amount of terms.
Put another way, we have
but if we make the sum start at k = 1, we need to replace every instance of k with k - 1, and accordingly adjust the upper limit in the sum.
Answer:
0.21
Step-by-step explanation:
The given expression is :
We need to solve it.
We know that,
So,
or
So, the value of the given expression is equal to 0.21.