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3 years ago

Help me ..Answer should be well explained..

Mathematics

1 answer:

UNO [17]3 years ago

4 0

9514 1404 393

Answer:

6. see attached

7. (a, b) = (-2, 3)

8. equation has issues

Step-by-step explanation:

6. Matrix addition is defined for corresponding terms, so the usual associative and commutative properties of addition apply. That is, ...

A₁₁ +B₁₁ = (A+B)₁₁ . . . . . and the same for other corresponding terms

The attachment shows the sums are equal. (It is convenient to let a spreadsheet do the tedious repetitive work.)

7. To find 'a' and 'b', we only need to consider the matrix elements that involve those variables.

element 11: 5 = b +2 ⇒ b = 3

element 21: a = 2 +2a ⇒ a = -2 (add -a-2 to both sides to get this)

8. There are issues with this equation. It is incomplete and inconsistent.

element 11: p = p+4 ⇒ no solution

element 21: r = 0 +(2r s) ⇔ missing math symbol; problem is incomplete

element 12: q = 6 + (p +q) ⇒ p = -6; q = anything

element 22: s = 2s +2 ⇒ s = -2 (add -s-2 to both sides)

_____

<em>Additional comment</em>

When a problem has issues of the kind that show up in question 8, I suggest that you have your teacher show you how to work the problem. If they're paying attention, they will discover the issues for themselves.

If they are able to work the problem, it will be because they filled in the missing information and resolved the inconsistencies. This will let you see the intended question.

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Alexandria High School scored 37 points in a football game. Six points are awarded for each touchdown. After each touchdown, the

galben [10]

Answer:

Five touchdowns were made in the game

Step-by-step explanation:

Here, we want to know the number of touchdowns made during the game.

We proceed as follows;

Let the number of touch downs be x

So the total points earned through touchdowns is 6 * x = 6x

The number of scores is 10 times

Let the number of extra kick be y which means that the number of conversions will be (y-1)

So the total number of score times will be ;

x + y + y-1 = 10

x + 2y = 11 •••••••••(i)

Now let’s work with points

Touch down points = 6 * x = 6x

Points from extra kick = 1 * y = y

Points from 2-point conversions = 2(y-1) = 2y - 2

So;

6x + y + 2y -2 = 37

6x + 3y = 37 + 2

6x + 3y = 39

divide through by 3

2x + y = 13 •••••••(ii)

So now solve simultaneously

From ii, y = 13 - 2x

Put this into i

x + 2(13-2x) = 11

x + 26 - 4x = 11

x -4x = 11-26

-3x = -15

x = -15/-3

x = 5

There are five touchdowns in the game

6 0

3 years ago

Natalie is completing construction of an equilateral triangle inscribed in a circle, as shown below. What should be the next ste

mixas84 [53]

The next step she should take is to draw arcs above and or below line AB to show where the triangles sides meet.

<h3>Steps in construction of an equilateral triangle</h3>

The steps involved in the construction of an a equilateral triangle are:

Place the compass point on A and measure the distance to point B
Swing an arc of this size above or below of the segment.
Do not change the span on the compass
Then place the compass point on B and swing the same arc, intersecting with the first arc
Label the point of intersection as the third vertex of the equilateral triangle.

Thus, the next step she should take is to draw arcs above and or below line AB to show where the triangles sides meet.

Learn more about construction of an equilateral triangle here:

brainly.com/question/11261696

#SPJ1

3 0

2 years ago

Rewrite in simplest terms: 0.1d – 0.5(8d – 10)

Lina20 [59]

Answer:

...

Step-by-step explanation:

0.1d - 4d -5