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den301095 [7]
3 years ago
6

I need help on this please ​

Mathematics
1 answer:
rjkz [21]3 years ago
7 0

Answer:

maybe rotation.........i think....

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A rectangular wall has length 3 less than 4 times the width . I wish to put a silver line along the corners of the wall. The lin
Thepotemich [5.8K]

Answer:

Step-by-step explanation:

Let width = w units

Length = 4w - 3

Cost for lining corners of wall = $ 18.50

Perimeter of the wall = 18.50/0.25 =  74 ft

2*(length  +width ) = 74

2*(4w - 3 + w) =74

2*(5w - 3) =74

10w - 6 = 74   {Add 6 to both sides}

10w - 6 + 6 = 74 + 6

10w = 80

Divide both sides by 10

10w/10 = 80/10

w =  8 ft

Length = 4w - 3 = 4*8 - 3 = 32 - 3

Length = 29 ft

Area of the wall = length * width

                           = 29 * 8

                           =  232 square ft

Cost of painting the wall per square feet = 20 cents = 0.20

Cost of painting 232 square feet = 232 * 0.20

                                                             = $ 46.40

4 0
3 years ago
Question A volleyball team sold raffle tickets to raise money for the upcoming season. They sold three different types of ticket
m_a_m_a [10]

Answer:

24 premium tickets were sold.

Step-by-step explanation:

Let :

Deluxe ticket = x

Regular tickets = x + 78

Premium tickets = y

x + (x + 78) + y = 208

4x + 2(x+78) + 10y = 714

2x + y = 208 - 78

4x + 2x + 156 + 10y = 714

2x + y = 130 - - - - - (1)

6x + 10y = 558 - - - - (2)

Now we can solve the simultaneous equation using elimination method :

From (1)

y = 130 - 2x

Put y = 130 - 2x in (2)

6x + 10(130 - 2x) = 558

6x + 1300 - 20x = 558

- 14x = 558 - 1300

-14x = - 742

x = 742 / 14

x = 53

Put x = 53 in y = 130 - 2x

y = 130 - 2(53)

y = 130 - 106

y = 24

3 0
2 years ago
For which equations below is x = -3 a possible solution? Select three options.
denpristay [2]

Answer:

|x|=3, |-x|=3 and - |x|=-3

Step-by-step explanation:

May I please have Brainliest?

Stay safe!!!!!!!!!!!!

6 0
3 years ago
Adele started her homework at 9:10.She finished at 9:45.How long did she spend on her homework
Juli2301 [7.4K]
30 minutes is the answer
3 0
3 years ago
Read 2 more answers
Both are x=<br> 27. x=<br> 28.x=
Black_prince [1.1K]

Answer:

Step-by-step explanation:

<u>27.</u> the sum of 2 complementary angles=90

8x-17+5x-10=90

13x=90+27

13x=117            <u>x=9 </u>

<u>28. </u> the sum of supplementary angles=180

17x-12+3x-48=180

20x=180+60

20x=240

<u>x=120</u>

3 0
3 years ago
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