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Roman55 [17]
3 years ago
11

Построить 12 и 5 угольник со стороной 4 см; найти их внутренние углы, площадь, периметр. 20 баллов

Mathematics
1 answer:
frutty [35]3 years ago
4 0

Answer:

UHHHHH.... UMMMM.... Well you see i dont speak nor do I understand Aribic so yeah.

Step-by-step explanation:

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I was confuse on number 5, 6, 7, 8.
KiRa [710]

Answer:

5. 3/5-2/5=1/5; answer is 1/5

6.7/10-3/10=4/10; answer is 2/5(simplify)

7.5/6-4/6=1/6; answer is 1/6

8.3/4-2/4=1/4; answer is 1/4

Step-by-step explanation:

Explanation is above, when subtracting fractions remember that the denominator must be the same and you can subtract the numerator.

Hope this helps!

5 0
2 years ago
Read 2 more answers
What are the solutions of 3x2 - x + 4 =
o-na [289]

To do this, you must use the order of operations.

3·2=6

6+4=10

Now to solve (-)x.

Since -x comes in front of 4, you must make your equation:

-x+10

Nothing is written for x, so now, you have the answer.

-x+10

8 0
3 years ago
PLEASE HURRY I NEED MY WORK TO BE SHOWN!!!!! 15 POINTS!!! CORRECT ANSWERS ONLY PLEASE!!!
Harlamova29_29 [7]

Answer:

f(-4) = 72, f(x + 5) = 3x² + 23x + 36

Step-by-step explanation:

f(-4) = 3(-4)² - 7(-4) - 4

      = 48 - (-28) - 4

f(-4) = 72

f(x + 5) = 3(x + 5)² - 7(x + 5) - 4

           = 3(x + 5)(x + 5) - 7(x + 5) - 4

           = 3(x² + 10x + 25) - 7(x + 5) - 4

           = 3x² + 30x + 75 - 7x - 35 - 4

f(x + 5) = 3x² + 23x + 36

4 0
3 years ago
a group of students arrange a picnic each student contributed rupees 61 1 upon 2 the total contribution was rupees 676 1 upon 2
IrinaVladis [17]

Answer:

Now, each student contributes= Rs 61 1/2= Rs 123/2 ( mixed fraction ).

Therefore, total no. of students=Rs (1953/2÷123/2) = 15.87

Rounding off 15.87 to 16.

There were 16 students

(i hope it is correct answer. pls mark as brainliest)

8 0
3 years ago
Read 2 more answers
For what values of the variable is each rational expression undefined 2x-3/2x-1( step by step please)
Rufina [12.5K]
\frac{2x-3}{2x-1}\\\\Rational\ expression\ unde fined\ if\ 2x-1=0\\\\2x=1\ \ \ \ /:2\\\\x=\frac{1}{2}\leftarrow answer
6 0
3 years ago
Read 2 more answers
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