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taurus [48]
3 years ago
11

What is the perimeter

Mathematics
1 answer:
Rufina [12.5K]3 years ago
5 0

Answer:

-2x + 3

Step-by-step explanation:

Perimeter means to add all the sides of the triangle. Simply combine like terms:

(3x) + (2x - 5) + (-7x + 8)

(3x + 2x - 7x) + (-5 + 8)

(5x - 7x) + (8 - 5)

-2x + 3

-2x + 3 is your answer.

~

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Translations
klemol [59]

1) Reflecting over y=x means (x, y) \longrightarrow (y,x). So, the coordinates of the image are:

V(-3, 0) \longrightarrow V'(0,-3)\\\\W(-1,0) \longrightarrow W'(0, -1)\\\\U(-2,-5) \longrightarrow U'(-5,-2)\\\\X(3,-3) \longrightarrow X'(-3, 3)


2) Rotating 90 degrees counterclockwise about the origin means (x,y) \longrightarrow (-y,x), so the vertices of the image are:

W(0,-1) \longrightarrow W'(1,0)\\\\X(3,-1) \longrightarrow X'(1, 3)\\\\V(0,-3) \longrightarrow V'(3,0)\\\\Y(1, -5) \longrightarrow Y'(5, 1)

3) The vertices of the image are:

C(2,0) \longrightarrow C'(-2, -2)\\\\D(2, 5) \longrightarrow D'(-2, 3)\\\\E(5,4) \longrightarrow E'(1, 2)

6 0
2 years ago
For all of a and b, 3a (a + 2b)-b (2a-3b)​
Yuliya22 [10]

Answer:

3a^2 + 4ab + 3b^2

Step-by-step explanation:

just trust me bro :)

6 0
2 years ago
An amusement park charges one admission price for adults and another admission price for children under 12. The Smoke family has
Alex73 [517]
Let the admission price for adults be 'x' and that of children be 'y'

Equation Formation.
2 x + 3 y = 80............equation(i)
3 x + y = 99.............equation(ii)

y = 99 - 3 x
2 x + 3(99 - 3 x) =80
2 x +297 - 9 x = 80
- 7 x = -217
x = 31

y = 99 - 3x
y = 99 - 3×31
y = 99 - 93
y = 6

Answer ⇒ Adults = $31
                  Children = $6
8 0
3 years ago
A company uses the declining-balance method of calculating depreciation expense. On January 1, the company buys machinery for $7
NeX [460]

Answer:

$516,000

Step-by-step explanation:

Given:

- Beginning boo value of asset A = $750,000

- The salvage value of the asset B = $100,000

- The estimated life of asset t = 10 years

Find:

What is the book value in year 3?

Solution:

- Under the declining balance method, double declining method depreciation rate (R) is calculated by:

                                  R = 1 / t

                                  R = 1 / 10 = 10%

- The accumulated depreciation for 3 years is as follows:

                                 Depreciation: ( A - B ) * R * 2

                 Year 1:     DDB = ( 750,000 - 100,000 ) * 0.2 = $130,000

                 Year 2:    DDB = ( 620,000 - 100,000)*0.2 = $104,000

- The book value in year 3 is:

                                 $ 620,000 - $104,200 = $516,000

                                             

                                   

7 0
4 years ago
Solve for m.<br> 2= m/2 -7<br> M=
crimeas [40]

Answer:

m=18

Step-by-step explanation:

First add 7 to both sides.

2+7=m/2

Simplify 2+7 to 9

9=m/2

Multiply both sides by 2

9*2=m

Simplify 9*2 = 18

18=m

3 0
3 years ago
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