MATHEMATICS HIGH SCHOOL

Solve: 3(2x - 5) = 6x - 15
A) 0
B) 1
C) 20
D) infinitely many solutions

Answers

Answer 1
Answer:

Based on the calculations, the value of x is equal to: D) infinitely many solutions.

Given the following data:

  • 3(2x - 5) = 6x - 15

How to determine a solution.

In this exercise, you're required to solve for a solution that satisfies the given equation. Thus, we would simplify the equation and find the value of x as follows:

Opening the bracket, we have:

6x - 15= 6x - 15

Next, we would rearrange the equation by collecting like terms:

6x-6x=-15+15\n\n0=0

Read more on equations here: brainly.com/question/13170908
Answer 2
Answer: If you would like to solve 3(2x - 5) = 6x - 15, you can do this using the following steps:

3(2x - 5) = 6x - 15
3 * 2x - 3 * 5 = 6x - 15
6x - 15 = 6x - 15
0 = 0

The correct result would be D) infinitely many solutions.

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Seven integers, x1, x2, x3, x4, x5, x6, and x7, are picked at random from the set of all integers between 10 and 110, inclusive. If each of these integers is divided by 7 and the 7 remainders are all added together, what would be the sum of the 7 remainders?

An airplane flies in a straight line for 5 hours & then takes a turn 12 degrees to the right & flies 3 hours in the new direction. The plane maintained a constant speed of 550 miles per hour throughout the flight. How far is the plane from the starting point in the air at the end of this time? (could someone pls explain this lol -3-)

Answers

we have triangle with side 5*550 = 2750 and side 3*550=1650 and angle 180-12 = 168 between them
Now we use the cosine theorem to get third side

d = √(2750 ^2+1650^2-2*1650*2750*cos(168)) = 4 377.40670603041

Express (5a^3n)^3 with positive exponents. please hey im taking my final exam

Answers

The expression of (5a³ⁿ)³ in positive exponents using the law of indices is 125 a⁹ⁿ

How to make an expression a positive exponent?

The expression has exponents. Therefore, let's express it with a positive exponent.

Therefore,

(5a³ⁿ)³

Hence, let distribute the outside exponents(law of indices),

(5a³ⁿ)³ = 5³ × a³ⁿ ˣ ³

Therefore,

5³ × a³ⁿ ˣ ³    

5 × 5 × 5 = 5³ = 125

a³ⁿ ˣ ³    = a⁹ⁿ

Hence,

(5a³ⁿ)³ = 125 a⁹ⁿ

learn more on exponents here: brainly.com/question/2289511

#SPJ2

Answer:

It would be 125a^9n

How many days are in 3 2/7 weeks

Answers

Well, there are 7 days in a week, so we'll have to multiply that by 3, which would be 21, plus the other 2 days stated in da problem, so that would be a total of 23 days!
I hope I helped, and PLEASE choose my answer as the Brainliest! 
Thank you! =D
7 × 3 = 21
21 + 2 = 23

So therefore, 23 days.

Given the equation 7(x + 2) = 2x − 1, solve for the variable. Explain each step and justify your process.Jeff solved a similar equation below. Is Jeff's solution correct? Explain why or why not.
3x − 2 = 5(x + 2)
3x − 2 = 5x + 10
8x = 8
x = 1

Answers

 
The original equation:                          7(x + 2) = 2x − 1

Eliminate parentheses on the left:        7x + 14 = 2x - 1

Subtract  2x  from each side:                5x + 14 = -1

Subtract  14  from each side:                5x         = -15

Divide each side by  5 :                          x          = -3

==============================

Jeff thought he had solved a similar equation, but his solution is not correct.

Here are his steps, with my commentary:

3x − 2 = 5(x + 2)            The original equation, to be solved.

3x − 2 = 5x + 10            Eliminated parentheses on the right, correctly.

8x = 8                            Subtracted  5x from each side, incorrectly. 
                                      Left side should be  -2x, not  8x .
                
                                     Added  2  to each side, incorrectly.
                                     Right side should be  12, not  8.
                                     
x = 1                           Divided each side by  8, correctly.
                                    But the input from the previous step was garbage,
                                    so the output from this one is garbage.


Jeff should have taken a moment to check his solution,
back in the original equation.

The original equation:            3x − 2 = 5(x + 2)         

If  x = 1, then                       3(1) - 2  =  5 (1 + 2) 

                                               3  -  2  =  5 (3)

                                                     1    =  15            I'm afraid not.
                                                                               Poor Jeff.

a submarine at the water's surface dropped down 100 ft after thirty minutes at that depth it dove an additional 500 ft what was its depth after the second dive

Answers

600 ft I think that would be the answer

At the register Annie notices her grocery bill was marked with $14 for the 7 pounds of meat she purchased. What is another wayof saying this ratio?

Answers

Answer:

2:1

Step-by-step explanation:

$2 for 1 pound of meat purchased

Answer:I think 2 Because if you have 7 and You add another its 14 so 2

Step-by-step explanation:Also can you make be braniest poss if not its ok :)
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