MATHEMATICS HIGH SCHOOL

What is the product of 6x – y and 2x – y + 2?A=8x2 – 4xy + 12x + y2 – 2y
B=12x2 – 8xy + 12x + y2 – 2y
C=8x2 + 4xy + 4x + y2 – 2y
D=12x2 + 8xy + 4x + y2 + 2y

Answers

Answer 1
Answer:

Answer:

Option (B) is correct.

The product of 6x – y and 2x – y + 2 is 12x^2-8xy+12x+y^2-2y

Step-by-step explanation:

Consider the given expressions 6x – y  and 2x – y + 2

We have to find the product of the above two given expressions,

(6x-y)(2x-y+2)

multiply first term of first expression by each term of second expression and similarly  second term of first expression by each term of second expression

\Rightarrow 6x(2x-y+2)-y(2x-y+2)

On solving, we get,

\Rightarrow 12x^2-6xy+12x-2xy+y^2-2y

Solving further by combining like term, we get,

\Rightarrow 12x^2-8xy+12x+y^2-2y

Thus, The product of 6x – y and 2x – y + 2 is 12x^2-8xy+12x+y^2-2y

Hence, option (B) is correct.

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Which is bigger 3/7 or 4/9

Answers

4/9 is bigger because if you convert
3/7 and 4/9 into there common denominator which is 63.
3/7= 27/63
4/9= 28/63 so 4/9 is bigger

Is three forths bigger than four fifths

Answers

no, 4/5 is bigger than 3/4 because when you find the common denominator between the two 4/5 becomes 16/20 while 3/4 becomes 15/20.

wish it helps

When you graph an inequality, you used a closed dot when you use which
symbols?

Answers

You should only use a closed dot for the symbols ≤ and ≥.

When you should use a closed dot?

There are two types of dots used when graphing inequalities, closed and open.

  • We use closed dots when the value where the dot is, is a solution.
  • We use open dots when the velue where the dot is, is not a solution.

So, for exampe in:

x > 3.

We would put an open dot at 3, because the value x = 3 is not a solution, but all the values at the right of the 3 are solutions.

In the other hand, for:

x ≥ 3

Now 3 is in fact a solution, so here we should use a closed dot.

Then, answering the question.

"When you graph an inequality, you used a closed dot when you use which symbols?"

The ≤ and ≥ symbols.

If you want to learn more about inequalities, you can read:

brainly.com/question/11234618
You use a closed dot with the greater than or less than with the line under the symbol or the greater than or equal to or the less than or equal to symbols. The line indicates a closed dot.

The distance traveled, in miles, as a function of time, in hours, is defined by D(t). D(t) = Which times and distances are represented by the function? Check all that apply. The starting distance, at 0 hours, is 300 miles.
By 2 hours, the distance traveled is 725 miles.
At 2.5 hours, the distance traveled is 875 miles.
At 3 hours, the distance is constant, at 880 miles.
The total distance traveled in 6 hours is 1,062.5 miles.

Answers

*The complete question is attached in image form with this answer*

The correct options are:
(b) By 2 hours, the distance traveled is 725 miles.
(d) At 3 hours, the distance is constant, at 880 miles.
(e) The total distance traveled in 6 hours is 1,062.5 miles.

Explanation:
At t = 2 hours, the answer would be:

D(2) = 300(2) + 125 = 725 miles (at t lies in the range of 0 and 2.5) <-- (Option b).

At t = 3 hours, the answer would be:
D(3) = 880 (since t is in the range of 2.5 and 3.5) <-- Option (d)

At t = 6 hours the answer would become:
D(6) = 75(6) + 612.5 = 1,062.5 miles (since t is in the range of 3.5 and 6) <-- Option (e).

At t=0, D(0) = 300(0) + 125 = 125 ≠ 300 (since t lies in 0 and 2.5).
At t=2.5, D(2.5) = 880 ≠ 875 (since t lies in 2.5 and 3.5)

Answer:

B, D, E

Step-by-step explanation:

Los op vir :/ Solve for y: 3.4.1 3y+7= 4y 3.4.2 10-3y+4=8+4v-y 3.4.3 2(y+1)=10-2/3v-4)​

Answers

Step-by-step explanation: First equation: 3.4.1 3y + 7 = 4y

Subtract 3y from both sides: 3.4.1 (3y - 3y) + 7 - 3y = 4y - 3y

Simplify: 3.4.1 7 = 4y

Divide both sides by 3.4.1: 7 / 3.4.1 = 4 / 3.4.1 * y

Multiply both sides by y: 7y = 4 * 3.4.1y

Substitute 7y with LHS: 4 * 3.4.1y = 7 *  Second equation: 3.4.2 10 - 3y + 4 = 8 + 4v - y

Add 3y to both sides: 3.4.2 (10 - 3y + 4) + 3y = 8 + 4v - y + 3y

Simplify: 3.4.2 17 = 12 + 4v

Subtract 12 from both sides: 3.4.2 (17 - 12) + 12 = 4v

Divide both sides by 3.4.2: 4.2 * 5 = 4v

Multiply both sides by v: 4.2v = 4 *

Please try to help thanks

Answers

Answer:

1 ) alternate interior angle

2) corresponding part of congruent triangle

3) vertically opposite angle

4)∆HED congruent to ∆FEG

5) parallel lines and alternate interior angle
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