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givi [52]
2 years ago
5

B) The perimeter of a squared field is 60 m. Find its area.​

Mathematics
1 answer:
Pani-rosa [81]2 years ago
6 0

\qquad\qquad\huge\underline{{\sf Answer}}♨

Let's solve ~

Perimeter of square is :

\qquad \sf  \dashrightarrow \:4 \times side \: length

so, we can take side length as a, and solve for a ~

\qquad \sf  \dashrightarrow \:4a = 60

\qquad \sf  \dashrightarrow \:a = 60 \div 4

\qquad \sf  \dashrightarrow \:a = 15

Now, since we know the side length. let's find Area of square :

\qquad \sf  \dashrightarrow \: {15}^{2}

\qquad \sf  \dashrightarrow \:area = 225 \: m {}^{2}

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The residual value, which is the farthest from the line of best fit for the table which shows points and their residual values, is 0.7.

<h3>What is residual value?</h3>

The residual value is the estimated value which is calculated for the end of the lease terms for a fixed asset.

Points and their residual values are shown in the table. A 3-column table with 5 rows.

  •  x                               1,     2,     3,     4,     5.
  •  y                               2,   3.5,   5,    6.1,    8.
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The simple regression line can be represented as,

\hat y=\alpha +\beta X+\hat e

Here α is the constant, β is the slope and <em>e </em>is the residue.

The point which is farthest from the best fit of the line is 3.5. At y=3.5, the value of residue is 0.7.

Thus, the residual value, which is the farthest from the line of best fit for the table which shows points and their residual values, is 0.7.

Learn more about the residual value here;

brainly.com/question/1168961

6 0
2 years ago
Johan's water bottle holds 4.2L of water. Johan has drank 51% of water in the bottle. How much, in litres, has he drunk?
swat32

Answer : 2.142L

Step-by-step explanation:

51/100 × 4.2

=51/100 × 42/10

= 2142/1000

= 2.142L

8 0
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There are many toys in a kindergarten. The ratio of the number of dolls to the number of balls to the number of cars is 7:8:5. I
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Answer:

There are 28 dolls, 32 balls,  20 cars   for 80 total toys

Step-by-step explanation:

dolls : balls: cars: total

7           8          5    (7+8+5)

7           8           5        20

We have a total of  80  

80/20 = 4

We need to multiply each number by 4

dolls : balls: cars: total

7*4     8*4     5*4      20*4

28       32      20       80


There are 28 dolls, 32 balls,  20 cars   for 80 total toys

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