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inessss [21]
3 years ago
10

Rashid can do a piece of work in 8 days, which Tipu can finish in 12 days. If they work at it on alternate days with Rashid begi

nning, in how many days, the work will be finished?
Mathematics
1 answer:
algol [13]3 years ago
3 0

Answer:

The work will be finished in 10 days.

Step-by-step explanation:

Rashid can do a piece of work in 8 days

This means that each day he works, Rashid does \frac{1}{8} of the work.

Tipu can finish in 12 days.

This means that each day he works, Tipu does \frac{1}{12} of the work.

Each 2 days:

Each 2 days they work, the amount done is given by:

\frac{1}{8} + \frac{1}{12} = \frac{3 + 2}{24} = \frac{5}{24}

Each 2 days, 5/24 of the work is done:

The number of periods of 2 days that is needed to finish the work(100% = 1 completed), is given by:

d = \frac{1}{\frac{5}{24}} = \frac{24}{5} = 4.8

2*4.8 = 9.6

Rounding up

The work will be finished in 10 days.

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3 years ago
I need help with number 11
FinnZ [79.3K]

Answer:

-b/2a is the equation to find the x coordinate of the vertex point and it's y, when x is plugged into the quadratic equation.

Step-by-step explanation:

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2 years ago
The volume of a cube is 124 cubic inches.<br> What is the side length of the cube?
ivolga24 [154]

Answer:

4.987 in

Step-by-step explanation:

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8 0
3 years ago
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The average number of customers per day at a home improvement store is given in the following table. Let x represent the day whe
nika2105 [10]

Answer:

A. 33.690\sin (0.887x + 1.337) + 81.684.

Step-by-step explanation:

We are given that,

x = Number of days where 1 = Sun of 1st week and 7 = Sat of first week.

The corresponding table for the data is given by,

Days        Day Number               Number of Customers

Sun                    1                                     115

Mon                   2                                     77

Tue                    3                                     60

Wed                   4                                     51

Thur                   5                                     68

Fri                      6                                      86

Sat                     7                                      120

The general form of the regression model is a\sin (bx+c)+d.

Using the sinusoidal regression calculator, we get that,

a = 33.690

b = 0.887

c = 1.337

d = 81.684

That is, the sine regression model is 33.690\sin (0.887x + 1.337) + 81.684.

Thus, option A is the sine regression model for the given data.

6 0
3 years ago
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The correct answer is C.) c=5

This is correct by using the equation c^2=a^2+b^2
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3 years ago
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