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4 years ago

Can someone review this and tell me if i'm right?

Mathematics

1 answer:

telo118 [61]4 years ago

3 0

Yes you are right from what i seen

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Using this formula l=A 1/2 what is the length of one side of a square with an area of 1,936 square kilometers? (A is the area of

Vera_Pavlovna [14]

c.)44 kilometers

Answer:

Solution given:

let

length =L

and

Area =A

Now

we have

Area [A]=1936 square kilometers

now

As we know that

Area of square :length *length

A=l*l

A=l²

Substituting value of A

1936=l²

doing square root on both side

$\sqrt{1936}=\sqrt{l²}$

we get

l= $\sqrt{2*2*2*2*11*11}$

l=2*2*11

l=44 kilometers

the length of one side of a square is 44 kilometers.

6 0

3 years ago

Output 4 7 12 rule: X-5

makvit [3.9K]

Answer:

-1

Step-by-step explanation:

4 - 5 = -1

7 - 5 = 2

12 - 5 = 7

5 0

3 years ago

"you have estimated a linear regression model relating y to x. your professor says, "i think that the relationship between y an

Artemon [7]

You can construct a residual plot, plotting the x values against the values of the residuals; if there is a non-linear pattern in the residual plot then it would not be suitable to use linear regression, whilst if there is no noticeable pattern (ie. the points are randomly scattered) then the relationship is linear and a line of best fit could be appropriate.

3 0

3 years ago

Select the inequalities represented by the graph below. Select all that apply

skad [1K]

First we find the equation of the line. Notice that the line goes through the point (0,c). Since c is on the y-axis, c is the y-intercept. To find the slope take any two points and count the boxes (up or down) from one to the other. Divide that by the number of boxes (left and right) from one to the other. I chose (0,c) and (1,-1) so I traveled down 2 and right 1. Down (negative) 2 and right (positive) 1 gives me a slope of -2/1 = -2.

The equation of a line is given by y = my +b where m is the slope (here -2) and b is the y-intercept (here c). That makes the equation of the line y=-2x+c.

The shading occurs above the line so we use either greater than (>) or the greater than or equal to sign $( \geq )$ . The way we decide is whether the line is solid (as it is here) or dashed. Here it is solid so we use greater than or equal to.

That makes the correct answer the 5th choice from the top: $y \geq -2x+c$

3 0

3 years ago

Find the area of the circle [?] square units

xxMikexx [17]

Answer:

169π or 530.93

Step-by-step explanation:

The formula for the area of a circle is πr²

Here, the radius is given to be 13.

So, let's just plug it into the formula as r

π x 13²

π x 169

169π

The radius is 169π. If you want to multiply out the π you would get 530.93, which is equivalent of course.

4 0

3 years ago