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Harlamova29_29 [7]
3 years ago
12

If you start with a number, add 2/5, then multiply by 7, the result is 6 3/10. What was the original number?

Mathematics
1 answer:
Anettt [7]3 years ago
3 0
(x+2/5)7=63/10
then divide both sides by 7
x+2/5=63/70
subtract 2/5 from both sides
and x= 1/2 

*x=original number
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If i roll 2 dice what is the probability that neither of them are prime nor even?
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Answer:

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4 0
3 years ago
Write an expression for “Triple the sum of 33 and b”. *
IrinaK [193]

Answer:

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8 0
2 years ago
Find x please!!<br> a.10<br> b.32<br> c.116<br> d.16
AysviL [449]

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Answer:

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Step-by-step explanation:

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5 0
3 years ago
The number of bacteria growing in an incubation culture increases with time according to n left parenthesis t right parenthesis
Anon25 [30]
For this case we have the following function:
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 60000 = 2400 * (5) ^ t
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 For this we use the logarithm:
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 log5 ((5) ^ t) = log5 (60000/2400)
 t = log5 (60000/2400)
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 Answer:
 
the number of bacteria in the culture will be 60 comma 000 after:
 
t = 2 days
5 0
3 years ago
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Alexxx [7]
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5 0
2 years ago
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