Please help i will give brainliest to first correct answer (2 5/8 +4 8/17 )+( 9/17 +3 3/8 )

Mathematics

2 answers:

kkurt [141]3 years ago

6 0

<h3>I'll teach you how to solve (2 5/8 +4 8/17 )+( 9/17 +3 3/8 )</h3>

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(2 5/8 +4 8/17 )+( 9/17 +3 3/8 )

Convert mixed numbers to improper fractions:

(21/8 + 4 8/17)+ (9/17+ 3 3/8)

Convert mixed numbers to improper fractions:

(21/8 + 76/17)+(9/17+ 3 3/8)

Convert mixed numbers to improper fractions:

(21/8 + 76/17)+(9/17+ 27/8)

Remover parentheses:

21/8 + 76/17+9/17+ 3 3/8

9/17+ 3 3/8= 72/163

21/8 + 76/17+72/163

Adjust fractions based on the LMC:

58191/22168+99104/22168+9792/22168

Convert improper fractions to mixed numbers:

7 11911/22168

Your Answer Is 7 11911/22168

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Serggg [28]3 years ago

3 0

Answer:

Step-by-step explanation:

You don't need the parenthesis, so you get:

2 5/8 + 4 8/17 + 9/17 + 3 3/8

You combine the integer values and get:

9 + 5/8 + 8/17 + 9/17 + 3/8

You combine the fractions with the denom. of 8 and do the same with those with the denom. of 17 and get:

9 + 8/8 + 17/17

You simplify:

9 + 1 + 1 =

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PTC is a substance that has a strong bitter taste for some people and is tasteless for others. The ability to taste PTC is inher

umka21 [38]

Answer:

Sample size shouldbe atleast 60

Step-by-step explanation:

Given that PTC is a substance that has a strong bitter taste for some people and is tasteless for others. The ability to taste PTC is inherited and depends on a single gene that codes for a taste receptor on the tongue. Interestingly, though the PTC molecule is not found in nature, the ability to taste it correlates strongly with the ability to taste other naturally occurring bitter substances, many of which are toxins.

Proportion of Italians who taste PTC =0.75

Margin of error <0.11

Confidence level = 95%

Std error of proportion = $\sqrt{\frac{0.75*0.25}{n} }$