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liubo4ka [24]
2 years ago
5

Help ASAP pleaseeee!!!!!

Mathematics
2 answers:
Gnom [1K]2 years ago
6 0
This is the solutions to the question
Andre45 [30]2 years ago
3 0

Answer:

x = -2/ 9

Step-by-step explanation:

\frac{2}{5}(x - 2) = 4x \\  \frac{5}{2}  \times \frac{2}{5}(x - 2) = 4x \times \frac{5}{2}  \\ x - 2 = 10x \\ 9x =  - 2 \\ x =  \frac{ - 2}{9}

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Para decorar una pared se disponen de tiras de papel azules de 15 cm, verdes de 20 cm, y rojas de 25 cm. En la pared se quiere a
den301095 [7]

Answer:

a) Smallest line that can be made with each color = 300 cm

b) Total strips should be used = 47 strips

c) Total strips used of blue color = 20

  Total strips used of green color = 15

  Total strips used of red color = 12

Step-by-step explanation:

Given - To decorate a wall, there are 15 cm blue, 20 cm green, and 25 cm red strips of paper. On the wall you want to build three lines of the same size, one of each color and without cutting any strip.

To find - a) How long is the smallest line that can be made with each color?

              b) How many strips should be used?

              c) How many of each color?

Proof -

a)

For the smallest line that can be made with each color, we just have to find the lcm (least common multiple) of the 3 srtips.

Firstly,

Decompose the 3 strips to its prime factors , we get

15 = 3×5

20 = 2²×5

25 = 5²

So,

The Lcm(15, 20, 25) = 3×2²×5² = 3×4×25 = 300

∴ we get

Smallest line that can be made with each color = 300 cm

b)

Now,

Total strips used = 300 cm

Strips used by 15 cm blue = \frac{300}{15} = 20 strips

Strips used by 20 cm green = \frac{300}{20} = 15 strips

Strips used by 25 cm red = \frac{300}{25} = 12 strips

So,

Total strips should be used = 20 + 15 + 12 = 47 strips

c)

Total strips used of blue color = 20

Total strips used of green color = 15

Total strips used of red color = 12

6 0
3 years ago
Newton has 28 cows Sally has 17 what is the sum?<br>​
melamori03 [73]

Answer: 45

Step-by-step explanation:

Sum is addition so it would be

28+17=45

6 0
3 years ago
Read 2 more answers
There are 1,295 students attending a small university.There are 714 women enrolled.What percent of the students are women?
BARSIC [14]
Total students = 1295

Number of women = 714

Percentage of women = 714/1295 x 100 = 55.14%

------------------------------------------------------------------
Answer: 55.14% of the students are women.
------------------------------------------------------------------
3 0
3 years ago
75 + s = -2 . what is s
babunello [35]

Answer:

s = -77

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
24 %<br><br> 89.5 %<br><br> 10.5 %<br><br> 76 %
Leno4ka [110]

Answer:

A

Step-by-step explanation:

I believe the answer is A. Good luck on your test!

3 0
3 years ago
Read 2 more answers
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