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matrenka [14]
3 years ago
6

What do you do to check whether a number is rational or irrational

Mathematics
1 answer:
PtichkaEL [24]3 years ago
5 0
Irrational numbers cant be fraction and can be written as a decimal. An irrational number has Endless repeating numbers
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Zair has 48 marbles in his pocket. He has 3 more blues than the
d1i1m1o1n [39]

Answer:

# yellow = 20

# blue = 23

# red = 5

Step-by-step explanation:

let 'r' = # red marbles

let '4r' = # yellow marbles

let '3+4r' = # blue marbles

r + 4r + 3 + 4r = 48

9r + 3 = 48

9r = 45

r = 5

red = 5

yellow = 4(5) = 20

blue = 3+4(5) = 23

6 0
2 years ago
Find the measure of 659<br> 670<br> In
sineoko [7]
The question doesn’t make sense.
3 0
2 years ago
4(x-1) + (x+2) + 3(x+1)
dusya [7]

Answer:

8x+1

Step-by-step explanation:

4(x-1) + (x+2) + 3(x+1)

4x-4 + x+2 + 3x+3

combine all x

4x+x+3x= 8x

combine all numbers without variables

(-4) + 2+3=1

8x+1

8 0
3 years ago
An employer has a staff of eighty actuaries, ten of whom are student actuaries. A student actuary is allowed a total of ten week
sergiy2304 [10]

Answer:

0.1111

Step-by-step explanation:

From the given information;

Number of staffs in the actuary = 80

Out of the 80, 10 are students.

i.e.

P(student actuary) = 10/80 = 0.125

number of weeks in a year = 52

off time per year = 10/52 = 0.1923

P(at work || student actuary) = (50 -10/52)

= 42/52

= 0.8077

P(non student actuary) = (80 -10)/80

= 70 / 80

= 0.875

For a non-student, they are only eligible to 4 weeks off in a year

i.e.

P(at work | non student) = (52-4)/52

= 48/52

= 0.9231

∴

P(at work) = P(student actuary) × P(at work || student actuary) + P(non student actuary) × P(at work || non studnet actuary)

P(at work) =  (0.125 × 0.8077) + ( 0.875 × 0.9231)

P(at work) = 0.1009625 + 0.8077125

P(at work) = 0.90868

Finally, the P(he is a student) = (P(student actuary) × P(at work || student actuary) ) ÷ P(at work)

P(he is a student) = (0.125 × 0.8077) ÷ 0.90868

P(he is a student) = 0.1009625 ÷ 0.90868

P(he is a student) = 0.1111

5 0
2 years ago
The DuPont equation shows the relationships among asset management, debt management, and ratios. Management can use the DuPont e
eduard

Answer:

Return on equity (ROE) = profit margin × asset turnover × financial leverage

Step-by-step explanation:

Return on equity (ROE) = profit margin × asset turnover × financial leverage

Which can be written as:

ROE = (net income÷ sales) × (sales ÷ total assets) × (total asset ÷ average shareholder equity)

6 0
3 years ago
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