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olasank [31]
3 years ago
7

WILL MARK BRAINLIEST FOR CORRECT ANSWER.

Mathematics
2 answers:
kiruha [24]3 years ago
7 0

Short Answer

It's A

Solution

A

2/3 x - 2 = 1/3 x                             Subtract 2/3x from both sides

2/3x - 2/3x - 2 = 1/3x - 2/3 x        Combine like terms

- 2 = - 1/3 x                                    Multiply both sides by - 3

- 2  * - 3 = 3 * - 1/3 x

- 6 = - x                                          Multiply by -1

x = 6

B

B looks like the same thing, but the 2 is a plus 2. When you solve for x you go through exactly the same steps. Your answer becomes - 6

C

C adds 2/3 x to both sides. The result is x = - 2

D same as C only x = 2

Phoenix [80]3 years ago
3 0

I would simplify each equation and then plug in 6 for x.

A.) \frac{2}{3}x-2= \frac{1}{3} x  Subtract 2/3x on both sides

\frac{2}{3}x-2- \frac{2}{3}x= \frac{1}{3}x-\frac{2}{3}x

-2=-\frac{1}{3}x  Now you plug in 6

-2=-\frac{1}{3} (6)

-2 = -\frac{6}{3}

-2 = -2


x = 6 is the solution for choice A

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2 years ago
Which expressions are equivalent?
White raven [17]

Answer:

option A and E

Step-by-step explanation:

Option A is equivalent because of the commutative law of addition;

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3 years ago
Please help me with i ii iii<br> Step by step
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3 years ago
Read 2 more answers
In your biology class, your nal grade is based on several things: a lab score, scores on two major tests, and your score on the
Mariana [72]

Complete Question

In your biology class, your final  grade is based on several things: a lab score, scores on two major tests, and your score on the final exam. There are 100 points available for each score. However, the lab score is worth 25% of your total grade, each major test is worth 22:5%, and the final exam is worth 30%. Compute the weighted average for the following scores: 92 on the lab, 81 on the first major test, 93 on the second major test, and 85 on the final exam. (Enter your answer to one decimal place)

Answer:

The weighted average is  W = 87.65

Step-by-step explanation:

From the question we are told that

  The worth of the lab score is  25% of total grade

  The worth of each major  test is   22.5% of total grade

   The worth of final exam is  30% of total grade

The  score on lab is  92

The score on first major test 81

The score on second major test 93

 The score on final  exam is  85

Generally the weighted score is mathematically represented as

     W = 0.25 *  92 + 0.225* 81 + 0.225* 93 +0.30 * 85

=> W = 0.25 *  92 + 0.225* 81 + 0.225* 93 +0.30 * 85

=> W = 87.65

   

   

3 0
3 years ago
Christian wants to make an A in his class. There are 5 exams this year, and he has taken 4 of them. His grades were 84, 88, 95,
ioda

Answer:

last test grade=x     x ≥ 79 so 79%

Step-by-step explanation:

(84/5)+(88/5)+(95/5)+(104/5)+(x/5) ≥ 90

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Subtract (371/5) from both sides

Then you have (x/5) ≥ (79/5)

Then multiply both sides by 5 and you have x ≥ 79

P.S. If it was helpful please consider giving me brainliest. =)

3 0
3 years ago
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