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Roman55 [17]
3 years ago
11

HELP PLSSS ASAP!!!!!!!!

Mathematics
2 answers:
Paraphin [41]3 years ago
8 0

Step-by-step explanation:

here,

<h3> 4x-12 = -2x+21</h3><h3> 4x+2x = 21+12</h3><h3> 6x = 33</h3><h3> x = 33/6</h3>
neonofarm [45]3 years ago
6 0

Answer:

x = 5.5

Step-by-step explanation:

PM = MR

4x - 12 = -2x + 21         {add 2x to both the sides}

4x - 12 + 2x = -2x + 2x + 21

6x - 12 = 21         {Add 12 to both sides}

6x - 12 + 12 = 21 + 12

            6x  = 33

              x = 33/6

x = 5.5

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Calculaye the perimeter and area of these composite shapes
lora16 [44]

For this case we have that the perimeter of the figure is given by the sum of the lengths of the sides, that is:

14 + 18 + 3 + 4 + 3 + 4 + 3 + 4 + (14-9) + (18-12) = 64

Thus, the perimeter of the figure is 64 centimeters.

Now, we find the area of the figure:

We have that by definition, the area of a rectangle is given by:

A = a * b

Where:

a and b are the sides of the rectangle

We have 4 vertical rectangles from left to right:

A_ {1} = 14 * (18-12) = 14 * 6 = 84 \ cm ^ 2\\A_ {2} = (3 + 3 + 3) * 4 = 9 * 4 = 36 \ cm ^ 2\\A_ {3} = (3 + 3) * 4 = 6 * 4 = 24 \ cm ^ 2\\A_ {4} = 3 * 4 = 12 \ cm ^ 2

Thus, the total area isA_ {t} = 156 \ cm ^ 2

Answer:

The perimeter of the figure is 64 centimeters.

A_ {t} = 156 \ cm ^ 2

4 0
3 years ago
How to solve for 6x-12+2x=3+8x-15
Alecsey [184]
6x−12+2x=3+8x−15

Simplify:

6x+−12+2x=3+8x+−15

(6x+2x)+(−12)=(8x)+(3+−15)(Combine Like Terms)

8x+−12=8x+−12


8x−12=8x−12

Subtract 8x from both sides.

8x−12−8x=8x−12−8x

−12=−12

Add 12 to both sides.

−12+12=−12+12

0=0

The real numbers are the only solution we can have.


4 0
3 years ago
How many 1/2 kg packets of salt can you obtain from 18 kg of salt​
True [87]

Answer:

36

Step-by-step explanation:

18 × 2 = 36

Because 1/2 is half of 1 kg so multiply by 2 it makes 1 kg

5 0
3 years ago
Karen spends $450 on monthly bills. Of this total amount, 12% is for phone service, 1/10 is for internet service, and 2/9 is for
finlep [7]
12%= 0.12 = 12/100 = 108/900
1/10 = 90/900
2/9 = 200/900

108/900 + 90/900 + 200/900 = 398/900 used

900- 398 = 502

502/900 = 251/ 450

251/450 × 450 = 251


Karen has $251 for food
4 0
3 years ago
What did the term 4x have in common (have the same) with x,120x, -3x?
Lera25 [3.4K]

Answer:

They're all like terms (x)

7 0
4 years ago
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