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3 years ago

The data plots represent the hours students study each week in two different classrooms.

Mathematics

2 answers:

Mekhanik [1.2K]3 years ago

8 0

Answer:

The data plots represent the hours students study each week in two different classrooms

The mean number of hours a student in Mr. Hart’s class studies is (4.6) hours.

Answer: 4.6

The mean number of hours a student in Ms. Perry’s class studies is (2.8) hours.

Answer: 2.8

A typical student in Mr. Hart’s class studies a typical student in Ms. Perry’s (more than) class.

Answer: More than

Hope this helps

Oduvanchick [21]3 years ago

5 0

Tu profesor esta loco cámbiate de clases

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Simplify the expression state any excluded values 2a^2-4a+2 --------------- 3a^2-3

chubhunter [2.5K]

Answer:

The simplified form is $\dfrac{2(x-1)}{3(x+1)}$ .

$x =1$ is the excluded value for the given expression.

Step-by-step explanation:

Given:

The expression given is:

$\dfrac{2a^2-4a+2}{3a^2-3}$

Let us simplify the numerator and denominator separately.

The numerator is given as $2a^2-4a+2$

2 is a common factor in all the three terms. So, we factor it out. This gives,

$=2(a^2-2a+1)$

Now, $a^2-2a+1=(a-1)(a-1)$

Therefore, the numerator becomes $2(a-1)(a-1)$

The denominator is given as: $3a^2-3$

Factoring out 3, we get

$3(a^2-1)$

Now, $a^2-1$ is of the form $a^2-b^2=(a-b)(a+b)$

So, $a^2-1=(a-1)(a+1)$

Therefore, the denominator becomes $3(a-1)(a+1)$

Now, the given expression is simplified to:

$\frac{2a^2-4a+2}{3a^2-3}=\frac{2(x-1)(x-1)}{3(x-1)(x+1)}$

There is $(x-1)$ in the numerator and denominator. We can cancel them only if $x\ne1$ as for $x=1$ , the given expression is undefined.

Now, cancelling the like terms considering $x\ne1$ , we get:

$\dfrac{2a^2-4a+2}{3a^2-3}=\dfrac{2(x-1)}{3(x+1)}$

Therefore, the simplified form is $\dfrac{2(x-1)}{3(x+1)}$

The simplification is true only if $x\ne1$ . So, $x =1$ is the excluded value for the given expression.

8 0

4 years ago

What is 6y - 12 = -3x in standard form?

lakkis [162]

To get it into standard you need to simplify
6y - 12 = -3x add 12 to both sides
6y = -3x + 12 add 3x to both sides
3x + 6y = 12
And that is in standard which is A + B = C

6 0

3 years ago

Perform the indicated operation. 4/11 x 10/8

Mrrafil [7]

5/11 because if you simplify starting at 40/88 you get 5/11

5 0

3 years ago

Read 2 more answers

If U=π (r+h),find the value of "r" when U=16 whole 1 upon 2 and h=2

saw5 [17]

Answer:

r = 3 1/4

Step-by-step explanation:

Here, we want to find the value of r given the values

Firstly, we will write r as the subject of the formula

U = π ( r + h)

U/π = r + h

r = U/π - h

Now substitute;

U = 16 1/2 = 33/2

h = 2

π= 22/7

r = 33/2/22/7 - 2

r = (33/2 * 7/22) - 2

r = 21/4 - 2

r = (21-8)/4

r = 13/4 = 3 1/4

5 0

3 years ago

Please help. Is algebra. PLEASE HELP NO LINKS OR FILES. I don't want links.

inysia [295]

It would be B! :) have a good day

3 0

3 years ago