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3 years ago

Which property is shown by 6+9=9+6?

Mathematics

2 answers:

Zepler [3.9K]3 years ago

4 0

I think associative property of addition

NNADVOKAT [17]3 years ago

3 0

Commutative Property of Addition

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In the diagram below ,find the value angle of the angle marked BCD.

Marina86 [1]

Answer:

55°

Step-by-step explanation:

In triangle BAC, angle C =

180° - 90° - 70°

Angle C = 20°

In triangle DAB, angle C =

180° - 90° - 55°

Angle C = 35°

Add both angles

20° + 35° = 55°

If my answer is incorrect, pls correct me!

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-Chetan K

6 0

3 years ago

Julio is buying a carton of blueberries that has a mass of 100 grams. Is it reasonable to say that there are 250 blueberries in

velikii [3]

It is not reasonable to say that there are 250 blueberries in the carton because the average weight of the blueberry in the carton does not make sense. The average weight of the blueberry in the carton is 0.4 gram (=100/250) and the normal average weight of blueberry is 0.66 to 1.5 gram. This gross calculation has not yet included the carton's mass.

8 0

3 years ago

15 points PLEASE HELP!!! Factor the following equation: <img src="https://tex.z-dn.net/?f=x%5E2%2B3x%2B4" id="TexFor

ycow [4]

Step-by-step explanation:

x²+3x+4=0

x²+3x_ +2=0

x²+3x_2=-2

x²+3x_2+(3x_4)²=-2+(3/4)²

(x+3/4) =-2+9_16

x+3_4 = -32+9__16 =√-23_6

x+3_4 =-√23_4

x = -3+√-23___4

x = -3- √-23___4 , -3+√-23___4 //

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5 0

3 years ago

Solve 2(x – 11)2 = 128.

Andrew [12]

Answer:

Step-by-step explanation:

Multiply the numbers 2 ( x - 11 ) * 2 = 128

4 ( x - 11 ) = 128

Distribute 4 ( x - 11 ) = 128

4x - 44 = 128

Add 44 to both sides 4x - 44 = 128

4x - 44 + 44 = 128 + 44

Simplify - Add the numbers

4x - 44 + 44 = 128 + 44

4x = 128 + 44

- Add the numbers

4x = 128 + 44

4x = 172

Divide both sides by the same factor 4x = 172

4x/4 = 172/4

Simplify

- Cancel terms that are in both the numerator and denominator

4x/4 = 172/4

x = 172/4

-Divide the numbers

x = 172/4

x = 43

5 0

2 years ago

Read 2 more answers

Homework problem #7: 24567389+35432611=what there is soo much regrouping, could someone show me how to do it?

Natasha_Volkova [10]

Answer:

$24567389+35432611 =60000000$

Step-by-step explanation:

Given

$24567389+35432611 =$

Required

Solve

2 4 5 6 7 3 8 9

+ 3 5 4 3 2 6 1 1

----------------------------

The numbers in parentheses are carried from previous sum

Start from the right

$9 + 1 = 10 \to$ Write 0, carry 1

2 4 5 6 7 3 8 9

+ 3 5 4 3 2 6 1 1

----------------------------

$8 + 1 + (1) = 10 \to$ Write 0 carry 1

2 4 5 6 7 3 8 9

+ 3 5 4 3 2 6 1 1

----------------------------

0 0

$6 +3 + (1) = 10 \to$ Write 0 carry 1

2 4 5 6 7 3 8 9

+ 3 5 4 3 2 6 1 1

----------------------------

0 0 0

$7+2 + (1) = 10 \to$ Write 0 carry 1

2 4 5 6 7 3 8 9

+ 3 5 4 3 2 6 1 1

----------------------------

0 0 0 0

$6 +3 + (1) = 10 \to$ Write 0 carry 1

2 4 5 6 7 3 8 9

+ 3 5 4 3 2 6 1 1

----------------------------

0 0 0 0 0

$5 +4 + (1) = 10 \to$ Write 0 carry 1

2 4 5 6 7 3 8 9

+ 3 5 4 3 2 6 1 1

----------------------------

0 0 0 0 0 0

$4 +5 + (1) = 10 \to$ Write 0 carry 1

2 4 5 6 7 3 8 9

+ 3 5 4 3 2 6 1 1

----------------------------

0 0 0 0 0 0 0

$2 +3 + (1) = 6 \to$ Write 6

2 4 5 6 7 3 8 9

+ 3 5 4 3 2 6 1 1

----------------------------

6 0 0 0 0 0 0 0

Hence:

$24567389+35432611 =6 0 0 0 0 0 0 0$

8 0

3 years ago