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3 years ago

Need asap Find the midpoint of (3, −7) and (−2, 12).

Mathematics

1 answer:

zhannawk [14.2K]3 years ago

3 0

Answer:

The midpoint is (1/2,5/2)

Hope this helps!

Brainliest?

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4. The figure below consists of a square and 2 semicircles, with dimensions as shown. What is the outside perimeter, in centimet

andriy [413]

Answer:

41.13 centimeters (rounded to 2 decimal places)

Step-by-step explanation:

The perimeter is the sum of all sides of the figure.

This figure consists of two semicircular lines (right and left) and two lines (top and bottom). We add up all of them and find the perimeter of the figure.

Left:

Semicircle perimeter = half of circle perimeter (aka circumference)

Circumference = 2πr, where r is the radius (half of diameter)

The diameter of the circle is 8, so radius is 8/2 = 4

So the circumference is:

C = 2πr = 2π(4) = 8π

Semicircle perimeter is half of that, so, 8π/2 = 4π

Right:

This is exactly same semicircle as the left one, so its perimeter is also 4π

Top:

The top is a side with length 8

Bottom:

Same as top, so the length is 8

Total perimeter = 4π + 4π + 8 + 8 = 16 + 8π = 41.13 centimeters

6 0

3 years ago

Plz help me I need the answer ASAP please

Komok [63]

Hope this is what you were looking for!

7 0

4 years ago

Read 2 more answers

*27 POINTS PLEASE HELP*

EleoNora [17]

To compute the slope of a segment, given its endpoints $A(A_x,A_y),\ B=(B_x,B_y)$ , you write

$m_{AB} = \dfrac{A_y-B_y}{A_x-B_x}$

Given this formula, you have the four slopes:

$m_{AB} = \dfrac{A_y-B_y}{A_x-B_x} = \dfrac{-1-2}{-4+1} = \dfrac{-3}{-3} = 1$

$m_{BC} = \dfrac{B_y-C_y}{B_x-C_x} = \dfrac{2-1}{-1-5} = \dfrac{1}{-6} = \dfrac{-1}{6}$

$m_{CD} = \dfrac{C_y-D_y}{C_x-D_x} = \dfrac{1+3}{5-1} = \dfrac{4}{4} = 1$

$m_{DA} = \dfrac{D_y-A_y}{D_x-A_x} = \dfrac{-3+1}{1+4} = \dfrac{-2}{5} = -\dfrac{2}{5}$

Now, two segments are parallel if they have the same slope. So, AB and CD are parallel, because they both have slope 1, but BC and DA are not parallel.

This means that ABCD is not a parallelogram, because in parallelograms the opposite sides are parallel.

8 0

4 years ago

These equations are written in point-slope form. rewrite them. in standard form, (ax+by=c).

Lostsunrise [7]

Answer:

3x+y= -3

Step-by-step explanation:

1) Distribute the -3 y-6= -3x-9

2) Add 3x to each side of the equation 3x+y -6= -9

3) Add 6 to each side 3x+y= -3

6 0

3 years ago

Consider the following sample data for two variables. x y 7 7 8 5 5 9 3 7 9 7 Calculate the sample covariance. b. Calculate the

Semmy [17]

Answer:

a) Sample co-variance = -1.5

b) Sample correlation = -0.4404152

c) Weak negative relationship between X and Y.

Step-by-step explanation:

a) by sample co-variance = sum ((x - xbar)* (y-ybar)/n-1

#.... use the following program in R

x = c(7,8, 5, 3, 9)

y = c(7,5,9,7,7)

sv = sum((x-mean(x))*(y-mean(y)))/4

cor(x,y)

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4 0

3 years ago