*Maths week 2 Graded assignment Complete Solutions Are Discussed In This Blog We Hope This Might Help You All In Matching Answers . Or For Some Others Reasons Not Able To Complete Graded Assignments *

For NAT type question, enter only one right answer, even if you get multiple answers for that particular question.

Notations:

$R$ = Set of real numbers $Q$ = Set of rational numbers

$Z$ = Set of integers

$N$ = Set of natural numbers

The set of natural numbers includes 0.

*1 point*

- Find the y – coordinate of the point of intersection of straight lines represented by (1) and (2), given the following equations:

Given that

$E=F=0$

Arithmetic mean of a and b is c.

Geometric mean of a and b is d.

Choose the correct option.

Note:

Arithmetic mean of m and n is $2m+n$

Geometric mean of m and n is $mn$

### Yes, the answer is correct.

Score: 1

### Accepted Answers:

A mobile company wants to launch its new model in collaboration with a network provider named Astron to attract more customers.

Option 2 – Only Mobile costs 22000 rupees

Now Lalith wants to buy this new model mobile. Lalith needs only 200 minutes per month.

There are two network providers in the country.

*1 point*

Choose the correct option.

### Yes, the answer is correct.

Score: 1

### Accepted Answers:

### Yes, the answer is correct.

Score: 1

### Accepted Answers:

*1 point*

State Government wants to connect the state road to the national highway from a town. There are 3 possible locations in the town A,B and C to connect to the National Highway whose locations are given by coordinates $(3,8)$,$(5,7)$,$(6,9)$ . The National Highway connects the 2 points $(2,1)$,$(10,7)$ and You, being the contractor, have the freedom to select any one of the 3 possible locations in the town.

Hint Always select the shortest path to construct the road.

Note: 1 unit = 100 meter

*1 point*

### Yes, the answer is correct.

Score: 1

### Accepted Answers:

### No, the answer is incorrect.

Score: 0

### Accepted Answers:

*1 point*

### Yes, the answer is correct.

Score: 1

### Accepted Answers:

*1 point*

*1 point*

7. A line perpendicular to the line segment joining A $(1,0)$ and B $(2,3)$, divides it at C in the ratio of 1:5 internally. Then the equation of line is

### Yes, the answer is correct.

Score: 1

### Accepted Answers:

8. A bird is flying along the straight line $2y−6x=44$. In the same plane, an aeroplane starts to fly in a straight line and passes through the point $(4,12)$. Consider the point where aeroplane starts to fly as origin. If the bird and plane collides then enter the answer as 1 and if not then 0. Note: Bird and aeroplane can be considered to be of negligible size.

### Yes, the answer is correct.

Score: 1

### Accepted Answers:

*1 point*

9. A surveyor needs to determine the area of a land show in Fig below. The coordinates of the four vertices of the land are as follows: A $(8,13)$, B $(3,10)$ , C $(4,4)$, D $(16,5)$

Fig:Survey Area

### Yes, the answer is correct.

Score: 1

### Accepted Answers:

*1 point*

A fitness trainer is analyzing the weight loss progress of his best client over a period of 6 months, to use it as for marketing. He recorded the weight of the client at the beginning and end of each month. Using straight line fitting, he came up with an equation $W=−8t+98$, where W = Weight in Kg, t= time in months.

Now you want to check weather this equation is correct or not so you collected the data from the gym, the data is given in table below.

*1 point*

11. Equation that fitness trainer came up with $W=−8t+98$ is well fitted to data. (Equation is said to be well fitted to data if the SSE is less than 5)

### Yes, the answer is correct.

Score: 1

### Accepted Answers:

Note: 1 month has 30 days

### Yes, the answer is correct.

Score: 1

### Accepted Answers:

*1 point*

*1 point*

The equation used to measure the $C_{d}$ (discharge coefficient) of the venturimeter value in the lab is:

$Q=1−β_{4}c_{d}2gΔh$

$c_{d}– discharge coefficient$

$β–Dd$

A1– Pipe section

A2– Restriction area

$Δh– head losses$

Q– flow rate

Ramesh plotted the graph between Q on the y-axis and $Δh$ on the x-axis and claimed that $1−β_{4}c_{d}2g$ is the slope of the obtained straight line.

Suresh plotted the graph between $Δh$ on the y-axis and Q on the x-axis and claimed that $c_{d}2g1−β_{4}$ is the slope of the straight line.

Who is/are actually correct?

### Yes, the answer is correct.

Score: 1

### Accepted Answers:

A rock is thrown in a pond, and creates circular ripples whose radius increases at a rate of 0.2 meter per second. What will be the value of $πA$, where $A$ is the area (in square meter) of the circle after 5 seconds?__Hint:__ The area of a circle = $πr_{2}$, where $r$ is the radius of the circle.

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