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2 years ago

Ayo please helpppp! Correct answer will get brainliest

Mathematics

2 answers:

Vladimir79 [104]2 years ago

8 0

Answer:it is the third one I am very sure

Step-by-step explanation:

andriy [413]2 years ago

6 0

Answer:

the third one I think let me know if I was wrong or right sorry if it's wrong ??!!!!!

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Gio is solving the quadratic equation by completing the square 5x^2+15x-4=0 What's should gio do first?

Softa [21]

Gio should for sure devide everything by ^2 and then combine like terms.

5 1

3 years ago

Examine the following table. Determine whether the rate of change is constant or variable. If it is constant, state the rate of

xenn [34]

Answer:

Variable rate of change.

Step-by-step explanation:

Plot the points and you'll see that the graph is not a straight line, therefore the rate of change is variable.

5 0

2 years ago

Use a matrix equation to solve the system of linear equations. left brace Start 2 By 1 Matrix 1st Row 1st Column 2nd Row 1st Col

natali 33 [55]

Answer:

$\left[\begin{array}{ccc}3&-1&\\-1&1/2\\\end{array}\right]$

Step-by-step explanation:

The matrix system for the linear equations: x + 2y = 8, 2x + 6y = 9

$\left[\begin{array}{ccc}1&2&\\2&6\\\end{array}\right] \left[\begin{array}{ccc}x\\y\end{array}\right] = \left[\begin{array}{ccc}8\\9\end{array}\right]$

To get the coefficient of x and y, the inverse of the first matrix (let the first matrix be A) must be known.

$A^{-1}$ = (1 / determinant of A) x Adjoint of A

the determinant of A = (1 x 6) - (2 x 2) = 6 - 4 = 2

Adjoint of A = $\left[\begin{array}{ccc}6&-2&\\-2&1\\\end{array}\right]$

$A^{-1}$ = $\frac{1}{2} \left[\begin{array}{ccc}6&-2\\-2&1\end{array}\right]$ = $\left[\begin{array}{ccc}3&-1&\\-1&1/2\\\end{array}\right]$

4 0

2 years ago

Please solve. 6(3 + 8) - 4/5

Gre4nikov [31]

G'Day mate! Here's the answer:

53 1/3

1. 6(3 + 6) - 4/5

2. 6 x 3 is 18, and 6 x 8 is 48

3. 18 plus 48 is 66

4. 66 - 4/5 = 266/5

5. 266/5 as mixed number is 53 1/5

3 0

3 years ago

Read 2 more answers

What is the value of this expression<br> 8 + 6x (10 - 4) +2

Vinvika [58]

Answer:

$8+6x(10-4)+2\\= 10 - 4\\= 6 + 2\\= 8 * (8 + 6x)\\ = 8 + 6x\\= 14x * 6\\= 84x\\$

Step-by-step explanation:

hope this helps.

4 0

2 years ago

Read 2 more answers