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stira [4]
3 years ago
6

I don't understand 13 can someone help

Mathematics
2 answers:
Debora [2.8K]3 years ago
5 0
Basically, you know a parallelogram has 4 angles which all add up to 360 degrees. (3x+5)+(x+3y)+2x+70=360 degrees. Just solve for x and y
Vsevolod [243]3 years ago
5 0
Use the rule of angle opposite, as 70° is opposite the 2x°

2x° = 70°

2x = 70

x = 70 ÷ 2

x = 35



Then, now stay well simples:

Use the rule of angle opposite as :

(3x + 5)° = (x + 3y)°

3.(35) + 5 = 35 + 3y

110 = 35 + 3y

110 - 35 = 3y

75 = 3y

3y = 75

y = 75 ÷ 3

y = 25

If you want to check the answer, to see if it is correct. The sum of the four angles must be 360 ​​°


As y = 25 and x = 35

(x + 3y)° = 35 + 3 . 25

= 110°

Then,

The sum of the 4 angles will be:

360° = 2 × 110° + 2 × 70°

360° = 220° + 140°

360° = 360°

Ohhh, that's right!

This the answer to the your question.

x = 35

And

y = 25

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\large -6x+6y=6<br> \large 6x+3y=12
Kaylis [27]

Answer:

the solution of the system is:

x = 1 and y = 2.

Step-by-step explanation:

I suppose that we want to solve the equation:

-6*x + 6*y = 6

6*x + 3*y = 12

To solve this, we first need to isolate one of the variables in one of the equations.

Let's isolate y in the first equation:

6*y = 6 + 6*x

y = (6 + 6*x)/6

y = 6/6 + (6*x)/6

y = 1 + x

Now we can replace this in the other equation:

6*x + 3*(1 + x) = 12

6*x + 3 + 3*x = 12

9*x + 3 = 12

9*x = 12 - 3 = 9

x = 9/9 = 1

Now that we know that x = 1, we can replace this in the equation "y = 1 + x" to find the value of y.

y = 1 + (1)  = 2

Then the solution of the system is:

x = 1 and y = 2.

6 0
3 years ago
Evaluate the expression below if<br> a = 8 and b=-5<br> I a l - I b I
Grace [21]
The answer should be 3 since its the absolute value and thats just how far a number is from 0 so it would be 8-5=3
5 0
2 years ago
Thank you for your help.
Nonamiya [84]

Answer:

q = -15

Step-by-step explanation:

5q = -75

Divide both sides by 5 : q = -15

8 0
1 year ago
Refer to Expression 1 and Expression 2.
TiliK225 [7]

Expression 1 is 25

6*7-3^2*9+4^3

First simplify all the exponents to get 6*7 - 9 * 9 + 64 and then multiply the two numbers to get 42 - 81 + 64 and just add = 25

For expression 2, if you put the parantheses around (5+4)*2+6-2*2-1, it'll be 19

(5+4)*2+6-2*2-1

9*2+6-2*2-1

18+6-4-1

24-5

19

Remember order of operations

5 0
3 years ago
3^3x3^3=3^5x3^x<br> Using exponent rules
gayaneshka [121]

The answer to the problem is x=0,1

4 0
3 years ago
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