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3 years ago

Please help me ASAP because if I don’t finish it I’ll get in trouble

Mathematics

2 answers:

Aleks04 [339]3 years ago

7 0

To find the surface area of this solid figure we add the area of all the faces

formula for area of triangle = 1/2 * base * height

So Area of two triangles = 2( 1/2 * 3 *2) = 6 in^2

And area of two lateral rectangles = 2( length * width) = 2( 2.5 *7 ) = 2(17.5)= 35 in^2

And area of base rectangle = (3*7) in^2 = 21 in^2

Now adding all the areas we get

(6+35+21) in^2 = 62 in^2

So surface area = 62 in^2

aleksley [76]3 years ago

5 0

SA= wh+lw+lp+ls

SA= 3(2)+7(3)+7(2.5)+7(2.5)

SA=6+21+17.5+17.5

SA=27+35

SA=62

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polygon ABCD is defined by the points A(-4,2), B(-2,4), C(1,3), and D(2,2). match the coordinates of the points you f the transf

Tomtit [17]

Answer:

D' ..................> (-2,2)

C'' .................> (3,-1)

A''' ................> (4,-2)

B'' .................> (4,2)

Step-by-step explanation:

Before we begin, we should remember the rotation rules:

1- Rotation 90° clockwise:

Coordinates (x,y) become (y,-x)

2- Rotation 90° counter clockwise:

Coordinates (x,y) become (-y,x)

3- Rotation 180° clockwise:

Coordinates (x,y) become (-x,-y)

4- Rotation 270° counter clockwise:

Coordinates (x,y) become (y,-x) ...........> same as rotation 90° clockwise

Now, let's consider the given problem:

1- Coordinates of D' if polygon ABCD rotates 90° counter clockwise to create A'B'C'D'

Original coordinates of point D are (2,2)

Rotation 90° counter clockwise means that the new coordinates will be (-y,x) which is (-2,2)

2- Coordinates of C'' if polygon ABCD rotates 90° clockwise to create A''B''C''D''

Original coordinates of point C are (1,3)

Rotation 90° clockwise means that the new coordinates will be (y,x) which is (3,-1)

3- Coordinates of A''' if polygon ABCD rotates 180° clockwise to create A'''B'''C'''D'''

Original coordinates of point A are (-4,2)

Rotation 180° clockwise means that the new coordinates will be (-x,-y) which is (4,-2)

4- Coordinates of B'' if polygon ABCD rotates 270° counter clockwise to create A''B''C''D''

Original coordinates of point B are (-2,4)

Rotation 270° counter clockwise means that the new coordinates will be (y,-x) which is (4,2)

Hope this helps :)

5 0

3 years ago

Use the information to find k, and then choose the equation of variation. X=13 when y=100

Degger [83]

y=kx
y=100
K=13
100=k13
k= 7.69

6 0

3 years ago

What is the 37th term of the arithmetic sequence with the first term -39 and the common difference of 8.

Mrrafil [7]

Answer:

$a_{37}=249$

Step-by-step explanation:

A sequence that has a common difference is an arithmetic sequence:

$a_n=a_1+(n-1)d$

where aₙ is the nth term, n is the index, and d is the common difference.

In your question:

n = 37
a₁ = -39
d = 8

Plug those into the formula:

$a_{37}=-39+(37-1)8$

Then solve:

$a_{37}=-39+(36)8\\a_{37}=-39+288\\a_{37}=249$

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3 years ago

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Colt1911 [192]

Answer: DNE

Step-by-step explanation:

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3 years ago

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