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ratelena [41]
3 years ago
6

3. Multiply a. (7a-b) (a +7b)

Mathematics
1 answer:
ser-zykov [4K]3 years ago
4 0
You already got the annswer but if you ever need math answers and or explanations asap use the app mathaway:)
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3 0
3 years ago
A 18 gram sample of a substance that's used to detect explosives has a k value of0.125
mr Goodwill [35]
T1/2 = ln 2 / k = ln 2 / 0.125 = <span>5.5</span>
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3 years ago
Lily has 4 fewer ribbons than Dora. Lily has 7 ribbons. How many ribbons does Dora have
zlopas [31]
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7 0
3 years ago
Read 2 more answers
Add 1 1/3 + (−5/6) = ?
Aleks [24]
1 1/3 = 4/3 (because (3 * 1 + 1) / 3)

We need both parts of sum to have common denominator.
Second part have denominator = 6.
When we multiply nominator and denominator of first part by 2 we get 8/6 (what is legit operation on fractions)

Now easily add:
8/6 + (- 5/6) = 8/6 - 5/6 = 3/6 (here we can divide both nominator and denominator by 3 to get "nicer" result) = 1/2 
4 0
3 years ago
Dagmar is a widget assembler. He is paid $3.27 for every widget he assembles. What is Dagmar's total pay for a week in which he
s2008m [1.1K]

Answer:

Dagmar gets paid a total of $683.43 for completing 209 widgets that week.

Step-by-step explanation:

$3.27*209 widgets = $683.43

3 0
2 years ago
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