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3 years ago

I need help with number 30 and please show work

Mathematics

2 answers:

vesna_86 [32]3 years ago

4 0

To find the area of a rectangle, the area equation is A= length X width. So you have to take all the rectangles and add the areas together to get the whole area of the polygon.
So the left rectangle is 12 X 4 = 48.
the middle bottom rectangle is 14 X 6= 84.
the top right triangle, is 5 X 4= 20.

So then you add all of the areas together.

48+84+20= 152.

Area of the Polygon= 152 cm

Lady bird [3.3K]3 years ago

3 0

30)

10 x 6 = 60
11 x 4 = 44
12 x 4 = 48

60 + 44 + 48 = 152 cm^2

answer: area = 152 cm^2

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Based on the figure, select all true equations

Lady bird [3.3K]

Answer:

a) no

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2 years ago

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Vadim26 [7]

Answer:

6.3/2.5=2.52

Step-by-step explanation:

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3 years ago

Read 2 more answers

A) Find the value of 3x – 2 when x = 4<br>b) Find the value of 5x + 6 when x = -2

Svetradugi [14.3K]

Answer: 10 and -4

Step-by-step explanation:

3x - 2 Plug in 4 for x

3(4) - 2 = 12 - 2 = 10

5x + 6. Plug in -2 for x

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8 0

3 years ago

Identify the decimals labeled with the letters A, B, and C on the scale below. Letter A represents the decimal Letter B represen

Yuliya22 [10]

$10$ divisions between $389$ and $390$ so each division is $\frac{390-389}{10}=0.1$

A is 8 division from $389$, so, A is $389+8\times 0.1=389.8$

similarly, C is one division behind $389$ so it is $389-1\times 0.1=388.9$

and B is $390.3$

8 0

3 years ago

PLS HELP! GIVING BRAINLIST!

svlad2 [7]

Answer:

We conclude that (4, 2) is NOT a solution to the system of equations.

Step-by-step explanation:

Given the system of equations

$y = x - 2$

$y = 3x + 4$

Important Tip:

In order to determine whether (4, 2) is a solution to the system of equations or not, we need to solve the system of equations.

Let us solve the system of equations using the elimination method.

$\begin{bmatrix}y=x-2\\ y=3x+4\end{bmatrix}$

Arrange equation variables for elimination

$\begin{bmatrix}y-x=-2\\ y-3x=4\end{bmatrix}$

Subtract the equations

$y-3x=4$

$-$

$\underline{y-x=-2}$

$-2x=6$

Now, solve -2x = 6 for x

$-2x=6$

Divide both sides by -2

$\frac{-2x}{-2}=\frac{6}{-2}$

Simplify

$x=-3$

For y - x = -2 plug in x = -3

$y-\left(-3\right)=-2$

$y+3=-2$

Subtract 3 from both sides

$y+3-3=-2-3$

Simplify

$y=-5$

The solution to the system of equations is:

(x, y) = (-3, -5)

Checking the graph

From the graph, it is also clear that (4, 2) is NOT a solution to the system of equations because (-3, -5) is the only solution as we have found earlier.

Therefore, we conclude that (4, 2) is NOT a solution to the system of equations.

8 0

3 years ago