MATHEMATICS MIDDLE SCHOOL

A rectangle has a length six less than three times the width.If the perimeter is 28 units find the width and length

Answers

Answer 1

Answer:

Answer:

Width = 5 and Length = 9 units.

Step-by-step explanation:

Let the width be W, then the length L = 3W - 6.

Perimeter = 2W + 2L = 2W + 2(3W - 6) = 28.

2W + 6W - 12 = 28

8W = 40

W = 5 units.

Therefore L = 3(5) - 6 = 9 units.

Answer 2

Answer:

Step-by-step explanation:

Length:

l = 3w - 6

Perimeter:

P = 2l + 2w = 2(3w - 6) + 2w = 8w - 12 = 28 --> w = 5

l = 3*5 - 6 = 9

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Can you help with deltamath

Answers

Yea what do you need help with

62 decreased by 37% i would like to know what that is cause i have a test tomorrow and i need help understanding this

Answers

$37 \% \ of \ 62 \n\ 37 = .37 \n\$

How to solve -2/3 w+5=4

Answers

$- (2)/(3) w + 5 = 4$

Refine:

$5 - (2w)/(3) = 4$

Multiply both sides by 3 :

$3 * 5 -3* (2w)/(3) = 3*4$

Refine:

$15 - 2 w = 12$

Subtract 15 from both sides:

$15 - 2w - 15 = 12 - 15$

$- 2w = -3$

Divide both side by -2 :

$(-2w)/(-2) = (-3)/(-2)$

$w = (3)/(2)$

hope this helps!.

the tank is 600 cubic meters. the height of tank is 6 meters. the base of the tank is square. what is the area of the base?

Answers

100 squre meters because the base is square so both sides are equal in length so if you divide volume on hight so the area will come which is 100 and lcm is 10

18= 3/4d + 6
I keep getting that d=9 but it doesn't check right plz help

Answers

18 = 3/4d + 6

First, we can start out by making our goal to get the variable (d) by itself on one side. Let's begin by simplifying the fraction and the variable with each other.
$18 = (3d)/(4)$

Second, we can now start our journey to get the variable by itself. Subtract 6 from each side.
$18 - 6 = (3d)/(4)$

Third, let's subtract 18 - 6 to get 12.
$12 = (3d)/(4)$

Fourth, let's continue by multiplying both sides by 4.
$12 * 4 = 3d$

Fifth, we can now multiply 12 times 4 to get 48. This can be done by using a calculator, etc.
$48 = 3d$

Sixth, we can divide each side by 3. We officially got the variable (d) by itself, so our goal is completed and all we need to do is simplify our fraction we just got.
$(48)/(3) = d$

Seventh, our last step is to simplify our fraction. In simpler words, what multiples with 3 to equal 48? (3 times 16 = 48), so 48 is our answer. We can also switch sides.
$d = 16$

Answer: $\fbox {d = 16}$

I need help please and thank you

Answers

Answer:

Step-by-step explanation:

each face is 9 cm squared because 3 times 3 is 9

9 times 6 is 54

squared units for area and surface area

Answer: C) 54 sq cm

Step-by-step explanation:

All of the sides in the example are 3 cm each, and there are 6 sides to a cube. 3^2*6 (3 squared times 6) = 54. Because we squared 3, the answer would be C)54 sq cm.

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