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3 years ago

In expression 5y-2xy+6+7x what is the coefficient of x

Mathematics

1 answer:

katrin2010 [14]3 years ago

4 0

7. A coefficient is a number or constant placed before the variable in an algebraic expression (e.g., 6 in 5y).

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The work of a student to solve the equation 3(2x – 4) = 8 + 2x + 6 is shown below:

Blababa [14]

If you would like to know in which step did the student first make an error and what is the correct step, you can calculate this using the following steps:

3(2x - 4) = 8 + 2x + 6
6x - 12 = 8 + 2x + 6
6x - 12 = 14 + 2x ... Step 2
6x - 2x = 14 + 12
4x = 26
x = 26/4 = 13/2

The correct result would be Step 2; <span>6x - 12 = 14 + 2x.</span>

6 0

3 years ago

The air pressure P is inversely proportional to the altitude h. write the related variation equation

Serhud [2]

Step-by-step explanation:

P * h = k, where k is a real constant.

5 0

3 years ago

Christine has always been weak in mathematics. Based on her performance prior to the final exam in Calculus, there is a 65% chan

amm1812

Answer:

0.49

Step-by-step explanation:

We apply conditional probability to solve this question.

We have Events X and Events Y

P(X) = Probability Christine fails the course = ??? Unknown

P(Y) = Probability Christine finds a tutor

= 0.35

P(Y') = Probability Christine does not find a tutor = 1 - 0.35 = 0.75

P(X|Y) = Decrease in her probability of failing = 0.35

P(X|Y') = Probability that she will fail the course if she does not have a tutor

P(X) = P(X|Y) × P(Y) + P(X|Y') × P(Y')

P(X) = 0.35 × 0.75 + 0.65 × 0.35

P(X) = 0.2625 + 0.2275

P(X) = 0.49

The probability that Christine fails the course is 0.49

8 0

3 years ago

Im not sure what to do for this problem

Leviafan [203]

325/360=120 πr2
325 πr2/325 π=120.360/325 π
R2=42.3
R=6.5cm is your answer

6 0

3 years ago

PLZ HELP !!!! WILL MARK BRAINLIEST, THIS IS DUE IN 15 MINUTIES !!!ANYONE PLEASEPLZ HELP !!!! WILL MARK BRAINLIEST, THIS IS DUE I

gogolik [260]

Answer:

The answer is G

Step-by-step explanation:

So what I did was I went on a website that it wont let me name and typed in each equation and then the ordered pair and checked to see if (8,-1) was a solution and it was for G.

6 0

3 years ago