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3 years ago

Please help:( enakskkwksm

Mathematics

1 answer:

Rashid [163]3 years ago

5 0

The perimeter means you add up all the sides
so you do

(12b-8) + (12b-8) + (9b+8)
now you just add the like terms

12b+12b+9b = 33b
-8+-8+8= -8
so the perimeter is 33b-8

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5. Write two expressions for the area of the big rectangle.

4vir4ik [10]

Answer:

Two expressions for the area are;

i) x/3 + 2·y + 6

ii) (1/3) × (x + 6·y + 18)

Step-by-step explanation:

The given dimension of the rectangle are;

The height of the rectangle, h = 1/3

The width of the smallest rectangle, w₁ = x

The width of the med sized rectangle, w₂ = 6·y

The width the large rectangle, w₃ = 18

The area, 'A', of the entire rectangular figure, the big rectangle, can be expressed as follows;

A = A₁ + A₂ + A₃

Where;

A₁ = The area of the smallest rectangle

A₂ = The area of the mid sized rectangle

A₃ = The area of the large rectangle

∴ A = (1/3) × x + (1/3) × 6·y + (1/3) × 18 = x/3 + 2·y + 6

The area of the big rectangle. 'A', can also be found as follows;

A = (1/3) × (x + 6·y + 18)

Therefore, two expressions for the area of the big rectangle are;

x/3 + 2·y + 6 and (1/3) × (x + 6·y + 18).

3 0

3 years ago

Someone78, YOU HAVE BEEN SUMMONED!<br><br><br> Pls answer fast .-.

Dennis_Churaev [7]

Answer:

8831.25 square feet

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

Complete the equation of the line whose y intercept is (0,6) and slope is 3

m_a_m_a [10]

Y = mx + b
m = slope
b= y intercept

so the equation is y= 3x + 6

6 0

4 years ago

20 POINTS! WILL MAKE BRAINLIEST

SVETLANKA909090 [29]

1.a sphere with a radius of three units

By definition, the volume of a sphere is:
$V = ( \frac{4}{3} ) (\pi) (r ^ 3)
$
Substituting values we have:
$V=(\frac{4}{3})(\pi)(3^3)$
Rewriting we have:
$V = (4) (\pi) (3 ^ 2)

V = (4) (\pi) (9)

V = 36\pi$

2.a cone with a diameter of twelve units and a height of three units

By definition, the volume of a cone is given by:
$V = \frac{1}{3} (\pi) (r ^ 2) (h)
$
Substituting values we have:
$V = \frac{1}{3} (\pi) ((\frac{12}{2}) ^ 2) (3)
$
Rewriting we have:
$V = (\pi) (6 ^ 2)

V = 36\pi$

6 0

3 years ago

50 pointsssss!!!!

Eva8 [605]

17.99mm and ).705 in

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Please help:( enakskkwksm​

Please help:( enakskkwksm