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4 years ago

Evaluate 3(4-2) what would be the answer to this

Mathematics

2 answers:

sladkih [1.3K]4 years ago

7 0

Answer:

Step-by-step explanation:

3(4 - 2)

Expand brackets.

3(4) + 3(-2)

12 + - 6

= 6

vfiekz [6]4 years ago

7 0

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▹ Answer

▹ Step-by-Step Explanation

Follow PEMDAS:

Parentheses

Exponents

Multiplication

Division

Addition

Subtraction

3(4 - 2)

3(2)

= 6

Hope this helps!

CloutAnswers ❁

Brainliest is greatly appreciated!

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Given that Justin is collecting data on reaction time, what type of data is he working with?

andrew11 [14]

Answer:

The correct option is (c)

Justin is working with continuous quantitative type of data.

Step-by-step explanation:

We are given that Justin is collecting data on reaction time.

The reaction time is obtained through measurements and it can take any value within a range therefore, it falls in the category of continuous data.

Moreover, since reaction time can be measured thus have numerical value therefore, it is a quantitative type of data.

Therefore, we can conclude that Justin is working with continuous quantitative type of data.

Other examples of continuous quantitative type of data are

measuring height

measuring temperature

8 0

3 years ago

A system of equations is made up of an ellipse and a hyperbola.

g100num [7]

The equation of the ellipse and the equation of the hyperbola can be

derived from the given information and the general form of the equations.

$Part \, A: The \ equation \ of \ the \ ellipse \ is; \displaystyle \frac{x^2}{3^2} + \frac{y^2}{4^2} = 1$

$Part \, B: The \ equation \ of \ the \ hyperbola \ is; \displaystyle \frac{x^2}{(-4)^2} - \frac{y^2}{(-7)^2} = 1$

Part C: The domain of the ellipse is; [-3, 3]

The domain of the hyperbola is; (-∞, -4]

The <u>domains of the ellipse and the hyperbola do not intersect</u>, therefore, <u>the system of equation has no solution</u>.

Reasons:

Part A: The center of the ellipse = At the origin;

The vertical major axis = 8 units

The minor axis = 6 units

The general equation for an ellipse is presented as follows;

$\displaystyle \frac{x^2}{b^2} + \frac{y^2}{a^2} = 1$

Where;

$\displaystyle a = The \ \mathbf{ semi \ major \ axis} = \frac{8}{2} = 4$

$\displaystyle b = The \ semi \ \mathbf{ minor} \ axis = \frac{6}{2} = 3$

The equation of the ellipse is therefore;

$\displaystyle \underline{\frac{x^2}{3^2} + \frac{y^2}{4^2} = 1}$

Part B: center of the hyperbola = The origin

The transverse axis = Horizontal

The vertex of the hyperbola = (-4, 0)

$\displaystyle The \ asymptote \ are; \ y = \mathbf{ \pm\frac{7}{4} \cdot x}$

The general equation of an hyperbola is presented as follows;

$\displaystyle \mathbf{\frac{x^2}{a^2} - \frac{y^2}{b^2}} = 1$

$\displaystyle The \ asymptote \ are; \ y = \mathbf{\pm\frac{b}{a} \cdot x}$

The vertices = (a, 0), (-a, 0)

Therefore, by comparison, we have;

a = -4

b = -7

Which gives the equation of the hyperbola as follows;

$\displaystyle \underline{ \frac{x^2}{(-4)^2} - \frac{y^2}{(-7)^2} = 1}$

The above equation can be written as follows;

$\displaystyle \frac{x^2}{(4)^2} - \frac{y^2}{(7)^2} = 1$

Part C: Given that both equations are equal, we have;

The covertices of the ellipse are; (-3, 0) and (3, 0)

The domain of the ellipse = [-3, 3]

The domain of the hyperbola = x < The negative vertex

∴ The domain of the hyperbola = x < -4 = (-∞, -4]

The above domain of the <em>ellipse </em>does not extend to the <em>hyperbola</em>, therefore there is no solution to the system.

Learn more about ellipse and hyperbola here:

brainly.com/question/17193351

brainly.com/question/8957529

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3 years ago

The orchestra at millard middle school has 120 members,Of these,30% are eighth-grades students.Find the number of 6th and 7th gr

vitfil [10]

Answer:

Step-by-step explanation:

Well lets begin by noting that 30% are Grade Eight. That means that 70% will be Grade Six and Seven, but thats not the question, the question is how many people are sixth and seventh grade. As I said before the answer is 84. To find 10% of 120, you shift the decimal point one place to the left and get 12. I earlier said 70% are grade six and seven meaning 70/10=7

All thats left is a simple multiplication problem, 12x7 which gives you 84. To ensure you are correct. 84/7=12 and that promises you a correct answer.

If you do not understand the math I did here reply and I will further explain. For now I hope this helps!

Brainly?

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3 years ago

Please answer and explain

irina [24]

Answer:

Step-by-step explanation:

4. 5, equation 38-8=35 35divided by 7 is 5

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3 years ago

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