What is the value of the variable? 3(x- 2)=15

Mathematics

1 answer:

STatiana [176]3 years ago

4 0

Answer:

x=7

Step-by-step explanation:

To solve for x, you have to multiply the terms in parenthesis by 3. Then you add 6 to each side of the equal sign. Then you divide each side of the equal sign by 3 to get x=7

$3x-6=15\\3x=15+6\\3x=21\\x=21/3\\x=7$

You might be interested in

Mike paid 12 dollars for 3 hamburgers how much does each hamburger cost

finlep [7]

4 dollars for each hamburger

6 0

3 years ago

The domain of a quadratic function is all real numbers and the range is y ≤ 2. How many x-intercepts does the function have?

Ugo [173]

<h3>Answer: 2</h3>

Explanation:

The range is y ≤ 2 which means that y = 2 is the largest y can get. The parabola opens downward to form a sort of "frowny face" so to speak. When moving down the parabola, we'll cross the x axis at two different spots. An example of this is shown below with the equation y = -x^2+2.

There's no connection between the '2' in y ≤ 2 and the final answer of 2 roots. We could easily have a range of something like y ≤ 5 or y ≤ 8 and the answer will still remain as 2. The most roots a parabola can have is 2.