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3 years ago

3/4-1/4= 1/2+3/8= 6 1/2-2 1/2= 3 1/2-1 1/8=

2 answers:

8 0

1) Answer: ½.
_____________________
Explanation:
_____________________
3/4 − 1/4 = 2/4 = 1/2 ; or, ½ .
________________________________________________
2) Answer: ⅝ .
________________________
Explanation:
______________
1/2 + 1/8 = (1*4)/(2*4) + 1/8 = 4/8 + 1/8 = 5/8 ; or, ⅝ .
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3) Answer: 4 .
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Explanation:
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6 ½ − 2 ½ = 4 . (or; 6.5 − 2.5 = 4.0 = 4 .).
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4) Answer: 2 ⅜ .
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Explanation:
_________________
3 1/2 − 1 1/8 = ?
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→ 1/2 = (1*4)/(2*4) = 4/8; → So rewrite: "3 1/2" as: "3 4/8"; and rewrite the problem:
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→ 3 4/8 − 1 1/8 = 2 3/8 ; or, 2 ⅜ .
___________________________________________

Nataly_w [17]3 years ago

7 0

1) 1/2
2) 7/8
3) 4
4) 19/8 = 2 3/8

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4 years ago

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Step-by-step explanation:

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Critical value for 95% confidence interval = $z_{\alpha/2}=1.96$

Confidence interval :

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