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3 years ago

14

Find the quotient of 5/31 divided by 15/23. Reduce your answer to the lowest fraction.

2 answers:

Mnenie [13.5K]3 years ago

6 0

the answer is 23/93

i hope this helps and sorry about this extra stuff i needed 20 things so i could add answer

Vlad1618 [11]3 years ago

5 0

First a reciprocal is a fraction but flipped over. So so if we have x/y, it's recipricam is y/x.

this helps to know when you understand that dividing by a fraction is the same thing as multiplying by that fractions reciprocal.

So ifnwenhave b/c and divide it by x/y we can also say b/c multiplied by y/x. it isnthensame thing.

now to use this for your problem.

5/31 divided by 15/23
or
5/31 times 23/15

all we have to do is multiple the 2 numerator and denominator and get:
115/465

now to reduce. divide both by 5 first
23/91

both numbers are prime so that would be answer

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If you earn $634.38 for a 29-hour work week, how much would you earn for a 40-hour work week at the same hourly rate?

8090 [49]

Answer:

you need another variable? because all you gave me was a total

Step-by-step explanation:

all you did was give 3 variables when 4 is needed

4 0

2 years ago

Winston has just gone grocery shopping. The mean cost for each item in his bag was $2.71. He bought a total of 9 items, and the

sukhopar [10]

The cost of the 9th item is $3.94

Since the mean cost for the 9 items in his bag was $2.71. Then, the total cost will be: = 9 × $2.71 = $24.39

In order to get the price of the 9th item, we have to calculate the price of all the 8 items given which will be:

$2.01 + $2.20 + $2.68 + $3.59 + $3.12 + $1.64, + $1.75 + $3.46 = $20.45

Therefore, the cost of the 9th item will be:

= $24.39 - $20.45

= $3.94

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3 years ago

The probability distribution of the amount of memory X (GB) in a purchased flash drive is given below. x 1 2 4 8 16 p(x) .05 .10

Rama09 [41]

Answer:

a) $E(X) = 6.45$

b) $E(X^{2} )= 57.25$

c) $V(X) = 15.648$

d) E(3X + 2) = 21.35

e) $E(3X^{2} +2) = 173.75$

f) V(3X+2) = 140.832

g) E(X+1) = 7.45

h) V(X+1) = 15.648

Step-by-step explanation:

a) $E(X) = \sum xP(x)$

$E(X) = (1*0.05) + (2*0.10) + (4*0.35) + (8*0.40) + (16*0.10)\\E(X) = 6.45$

b)

$E(X^{2} ) = (1^{2} *0.05) + (2^{2} *0.10) + (4^{2} *0.35) + (8^{2} *0.40) + (16^{2} *0.10)\\ E(X^{2} )= 57.25$

c)

$V(X) = E(X^{2} ) - (E(X))^{2} \\V(X) = 57.25 - 6.45^{2} \\V(X) = 15.648$

d)

$E(3X+2) = 3E(X) + 2\\E(3X+2) = (3*6.45) + 2 \\E(3X+2) = 21.35$

e)

$E(3X^{2} +2) = 3E(X^{2} ) + 2\\E(3X^{2} +2) = (3*57.25) + 2 \\E(3X^{2} +2) = 173.75$

f)

$V(3X+2) = 3^{2} V(X)\\V(3X+2) = 9*15.648\\V(3X+2) = 140.832$

g)

$E(X+1) = E(X) + 1\\E(X+1) = 6.45 + 1\\E(X+1) =7.45$

h)

$V(X+1) = 1^{2} V(X)\\V(X+1) = 15.648$

6 0

3 years ago

khanya builders are paid R480 for 8 hours of work,whiles rex builders are paid R660 for 12 hours of work.which company is paid t

kiruha [24]

Answer:

khanya pays higher

Step-by-step explanation:

You have to find the $/hr ratios:

khanya's is 480/8->$60/hr

rex's is 660/12->%55/hr

Khanya pays the higher rate

5 0

3 years ago

X=-2y+16<br> 4x+8y=32<br> substitutional equation

Dahasolnce [82]

4(-2y + 16) + 8y = 32
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Answer: no solution

5 0

2 years ago