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olya-2409 [2.1K]
3 years ago
13

In a certain computer company, 3/5 of the programmers know fortran, 1/6 know cobol, and 1/10 know both. what fraction know neith

er fortran nor cobol?
Mathematics
1 answer:
koban [17]3 years ago
6 0
Given that 3/5 know fortran
1/6 know cobol
1/10 know both fotran and cobol
the fraction of programmers who knows at least one of the two programs will be:
3/5+1/6+1/10
=13/15
the fraction of programmers who don't know either of the two will be:
1-13/15
=2/15
thus the answer is 2/15
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PLEEASSEEEE Answer ASAP. Due in 5 Minutes. 25 points!!!!!!!!!
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Answer:

Here we will use the relationships:

a^n*a^m = a^{n + m}

(a^n)^m = a^{n*m}

\frac{a^n}{a^m} = a^{n - m}

And a number:

a^n

is between 0 and 1 if a is positive and larger than 1, and n is negative.

if a is positive and 0 < a < 1, then we need to have n positive such that:

0 < a^n < 1

A) 5^3*5^{-4} = 5^{3 + (-4)} = 5^{-1}

This is between zero and 1,

B) \frac{3^5}{3^{-6}} = 3^{5 - (-6)} = 3^{11}

This is greater than 1, because the exponent is positive.

C) (\frac{1}{4})^3*( \frac{1}{4})^2 = (\frac{1}{4})^{2 + 3} = (\frac{1}{4})^5

Because a is smaller than 1, and the exponent is positive, then the expression is between 0 and 1.

D) \frac{(-7)^5}{(-7)^7} = (-7)^{5 - 7} = -7^{-2}

The exponent is negative (and pair) then the expression is between 0 and 1.

Remember that when the exponent is pair, we always have that:

(-N)^m = (N)^m

So (-7)^-2 = 7^-2

4 0
3 years ago
Graph the equation y= 1/2 + 4​
Alika [10]
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8 0
3 years ago
What is th difference in length between a 1 1/4 inch button and a 3/8 inch button
artcher [175]
Okay so 11/4 needs to be multiplied by 2 so that the D match up.

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3 years ago
Need help with this please.
iogann1982 [59]
Hi....

Im not sure if i got it right but i think its: 1.8........  Hope this helps. Brainliest Please
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3 years ago
5(y+2)= -3<br><br> Whats the answer TvT
Iteru [2.4K]

Answer:

The answer is given below

Step-by-step explanation:

(5y  + 10) =  - 3

5y =  - 3 - 10

5y =  - 13

y  =  - 13 \div 5

This is the velue of y

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8 0
2 years ago
Read 2 more answers
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