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guajiro [1.7K]
2 years ago
13

I need more help!!! plss

Mathematics
2 answers:
Sergio [31]2 years ago
8 0

Answer:-.75

Step-by-step explanation:

multiplying a fraction results in you having to divide it

1/3 of 3 is 1 and then -7/4 of 1 is -.75

(From what I found anyway)

Likurg_2 [28]2 years ago
7 0
Plug in the numbers for x and y So
3 1/3 + -7/4
Convert the mixed number to an improper fraction
10/3 + -7/4
Calculate the sum
19/12
Answer: 19/12
Should be right hope that helped!
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Marris decides to bake his parents a cookie in the shape of a regular dodecagon (12‑gon) for their 12-day anniversary.
allochka39001 [22]

Answer:

The answer to each question is:

  • A.) 403.2 cm^{2}
  • B.) 100. 8 cm^{2}

Step-by-step explanation:

A.) To obtain the area of the dodecagon, you can use the next formula:

  • Area of a dodecagon = 6 * apothem * edge

In the exercise, we have the edge (6 cm), but, to find the apothem of a dodecagon, that is the distance between the center of the polygon, and the middle point of each side, you can use the next formula:

  • Apothem = Edge * \frac{2+\sqrt{3}}{2}

If we replace the value of the edge, we obtain:

  • Apothem = 6 cm * \frac{2+\sqrt{3}}{2}
  • Apothem = 11.2 cm (approximately).

With this data, we can find the area:

  • Area of a dodecagon = 6 * apothem * edge
  • Area of a dodecagon = 6 * 11.2 cm * 6 cm
  • Area of a dodecagon = 403.2 cm^{2}

Then,<u> the area of the dodecagon is 403.2 </u>cm^{2}<u> approximately</u>.

B.) As the area obtained is for 12 pieces, when the parents ate 9 pieces, just left 3 pieces, with these values you can make a rule of three.

If:

  • 12 pieces = 403.2 cm^{2}
  • 3 pieces = X

Then:

  • X = (3 * 403.2 cm^{2}) / 12
  • X = 1209.6 cm^{2} / 12
  • X = 100. 8 cm^{2}

In this form, <u>when the cookie has 3 pieces, its area is 100. 8 </u>cm^{2}<u> approximately</u>.

5 0
3 years ago
Heeelp and simplify <br> ASAP PLEASE
Svetach [21]

Answer:

hi

Step-by-step explanation:

7 0
2 years ago
The table shows how much an air-conditioning repair company charges for different numbers of hours of work. Graph the data, and
emmainna [20.7K]
How someone supposed to know what the table looks like..... at least add the table
4 0
2 years ago
Read 2 more answers
Louisa has $145 saved in her account. She makes $8 an hour at work. How many hours must she work to have at least $320?
musickatia [10]
<span>$145 saved in her account.
</span><span>$8 an hour at work.
</span><span>at least $320

320 - 145 = 175

175 </span>÷ 8 = 21.875

Louisa needs to work about 22 more hrs to have at least $320!
6 0
2 years ago
E price of an item yesterday was 130. Today, the price rose to 221. Find the percentage increase
natulia [17]

Answer:

70

Step-by-step explanation:

The explanation is in the picture

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