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bixtya [17]
3 years ago
8

Pleaseeeee Helpppppp me

Mathematics
1 answer:
ANTONII [103]3 years ago
5 0
I will think it will be ANSWER - TWO
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Can someone help me with this problem? <br> a + (b + 12) = (b + 12) + a
Aleksandr [31]

Answer: True 12=12

a+(b+12)=(b+12)+a

a+b+12=b+12+a

Which equals each other

7 0
3 years ago
Which counterexample shows that the conjecture "Every parallelogram is also a rectangle" is false?
saveliy_v [14]
A parallelogram without four right angles would prove that to be false.
5 0
3 years ago
Read 2 more answers
A class has 36 students in it and 25% of the students wore hats to school. What fraction of the students wore hats?​
Setler79 [48]

Hi,

25/100 * 36 = 9

So it represents 9/36 = 1/4 of students

8 0
3 years ago
Using the properties of inequalities, write down the inequality that you will get if you: add the number –5; 2.7; 7; to both sid
puteri [66]

Answer:

See below

Step-by-step explanation:

1..........................

  • 18 >−7

Add –5; 2.7; 7 to both sides

  • 18 -5 > -7 - 5 ⇒ 13 > -12
  • 18 + 2.7 > - 7 + 2.7 ⇒ 20.7 > - 43
  • 18 + 7 > -7 + 7 ⇒ 25 > 0

2..........................

  • 5 > -3

Subtract 2; 12; -5 from both sides

  • 5 - 2 > -3 -2 ⇒ 3 > - 5
  • 5 - 12 > -3 - 12 ⇒ -7 > -15
  • 5 -(-5) > -3 - (-5) ⇒ 10 > 2

3..........................

  • - 9 < -6

Multiply both sides by 3; −3; −1

<em>When multiplying both sides of inequality by positive number the sign stays as is, when multiplying both sides of inequality by negative number the sign reverses</em>

  • -9 *3 < -6*3 ⇒ -27 < - 18
  • -9*(-3) > -6*(-3) ⇒ 27 > 18
  • -9*(-1) > -6*(-1) ⇒ 9 > 6
7 0
3 years ago
Read 2 more answers
Number 8 and 9 pls, if u answer u get brainlist rank!
mylen [45]

Answer:

8.

Denote the equation : y = ax + b

Use the first 2 values of x and y in table:

3a + b = 21

5a + b = 35

Subtract the 2 equations:

=> 2a = 14 => a = 7 => b = 21 - 3 x 7 = 0

=> The solution is  y = 7x

9.

Denote the equation : y = ax + b

Use the first 2 values of x and y in table:

5a + b = 17

10a + b = 22

Subtract the 2 equations:

=> 5a = 5 => a = 1 => b = 17 - 5 x 1 = 17 - 5 = 12

=> The solution is  y = x + 12

Hope this helps!

:)

8 0
2 years ago
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