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yuradex [85]
4 years ago
15

Which of the following describes the correct process for solving the equation 2x − 4 = 20 and arrives at the correct solution?

Mathematics
2 answers:
mafiozo [28]4 years ago
5 0

<u>Answer: </u>

Option (A)

Add 4 to both sides, and then divide by 2. The solution is x=12

<u>Explanation:</u>

Add 4 to both sides, and then divide by 2. The solution is x=12

Step I: Add 4 to both sides

Adding, 2x – 4 + 4 = 20 + 4

2x = 24

Step II: Divide by 2

x = 12

Therefore, solution is x = 12

Hence, option (a) is correct

ValentinkaMS [17]4 years ago
3 0

Answer:5

Step-by-step explanation:

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Solve each equation. Be sure to check for extraneous solution -7= |a-3|/-2
stepan [7]

Answer:

a = -11, 17.

Step-by-step explanation:

-7 =  |a-3| / -2

Multiply both sides by -2:

|a - 3| = 14

So a - 3 = 14

Giving a = 17

or

a - 3 =- -14

giving a = -11.

Checking these values:

-7 = |17-3| / -2 = 14/-2 = -7  

- so a = 17 is a solution.

-7 = |-11-3| / -2 = 14/-2 = -7

so a = -11 is also a solution.

4 0
3 years ago
Fill in the blanks:
LUCKY_DIMON [66]
Answer:
A) 0.01

srry id k the other questions
8 0
3 years ago
A fish tank, in the shape of a rectangular prism with dimensions 51 cm by 39 cm by 28 cm, is 95% filled with water. A solid log
GenaCL600 [577]

Answer:

The end answer is 669.4

Step-by-step explanation:

So you take the volume of the fish tank: 51*39*28=55692, but the tank is only 95% full, so you take 55692 and divide it by 100 and multiply it by 95, you get 52907.4. Then you calculate the volume of the log: 3.14*5^2*44=3454.

Now that we know these values, we take the volume of the water which is 52907.4 and add the volume of the log 3454 which gets you 56361.4.

Now we know the combined volume of the water and the log, we can remove the volume of the tank, which will still be holding the water that hasn't exceeded the capacity of the tank: 56361.4-55692=669.4

So then we know what has exceeded the capacity of the tank, which is how much water has spilled

So the water spilled equals 669.4 cubic centimetres of water.

6 0
3 years ago
This is a test help me please i need step by step to please
vampirchik [111]

Answer:

B

Step-by-step explanation:

I think n should be squared, right? and isn't the coefficient 8? But i do know both terms are negative, and that's the only answer.

8 0
3 years ago
Decide if the situation involves permutations, combinations, or neither. explain your reasoning.
tigry1 [53]

The number of ways you can choose 5 beach towels from a selection of 8 to bring on vacation is a combination problem

<h3>Permutation and combination</h3>

Permutation has to do with arrangement while combination has to do with selection.

When choosing an object from other pool of object, we will have what is called combination.

From the given question, we are told that the number of ways you can choose 5 beach towels from a selection of 8 to bring on vacation, since they are selecting, hence the situation involves combination.

Learn more on combination here: brainly.com/question/11732255

#SPJ1

8 0
2 years ago
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