!!!NEED HELP ASAP!!!

Can someone please help me! Big ideas 8.4 number 20

Harlamova29_29 [7]

<u>Answer:</u> The perimeter is about 20.26 units

<u>Step-by-step explanation:</u>

To calculate the distance between the points, we use the formula:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

where,

d = distance

$x_2\text{ and }x_1$ are the coordinates of the points on x-axis

$y_2\text{ and }y_1$ are the coordinates of the points on y-axis

For the given points:

B(0,3), C(4,-1), E(2,-3) and F(-2,1)

Calculating the distance BC:

$x_2=4\\x_1=0\\y_2=-1\\y_1=3$

Putting values in above equation, we get:

$BC=\sqrt{(4-(0))^2+(-1-3)^2}\\\\d=\sqrt{16+16}=5.66units$

Calculating the distance CE:

$x_2=2\\x_1=4\\y_2=-3\\y_1=-1$

Putting values in above equation, we get:

$CE=\sqrt{(2-(4))^2+(-3-(-1))^2}\\\\d=\sqrt{36+4}=4.47units$

To calculate the perimeter of a rectangle, we use the equation:

$Perimeter=2(l+b)$ ....(1)

where,

l = length of the rectangle = BC = 5.66 units

b = breadth of the rectangle = CE = 4.47 units

Putting values in equation 1, we get:

$Perimeter=2(5.66+4.47)\\\\Perimeter=20.26 units$

Hence, the perimeter is about 20.26 units

7 0

3 years ago

Rosita is playing a card game with some friends. The game starts by Rosita passing 7 cards to each player. If she passes out twe

NARA [144]

7p = 28....division property...divide both sides by 7
p = 28/7
p = 4 <== there are 4 players

5 0

4 years ago

Kayla’s work to find the surface area of a composite solid formed when a rectangular prism and rectangular pyramid are joined at

docker41 [41]

Answer:

Option B

Step-by-step explanation:

The reason is because the surface area is not including the base of the pyramid and the top of the prism.

Option b. she left out one of the faces of the solid she should have simplified 2((5)(7))+2((6)(7))+2[1/2(5)(9.3)]+2[1/2(6)(9.2)]+(5)(6)

Step-by-step explanation:

we know that

The surface area of the composite figure is equal to the surface area of the pyramid not including the base plus the surface area of the prism not including the top

so

SA= 285.7 units squared

5 0

4 years ago

A square box lid has an area of 50 square inches. Which is the best estimate of the length of one side?

PtichkaEL [24]

Answer: 7.1 inches

Step-by-step explanation:

The area of a square is simply the square of one of its length. Therefore since we are informed that the area of the square box is given as 50 inches².

Then the best estimate of the length of one side will be the square root of 50 which will be:

= ✓50

= 7.1 inches approximately

5 0

3 years ago

There are 620 students and 31 teachers at the Turner Middle School. There are 950 students and 38 teachers at the Green Middle S

Reika [66]

Turner Middle School
620 students
31 teachers

Green Middle School
950 students
38 teachers

If you want the ratios of teachers to teachers and students to students for Turner to Green...

the ratio of students to students is 620/950 = 0.65
the ratio of teachers to teachers is 31/38 = 0.82

3 0

3 years ago