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1 year ago

6. The table shows the equations Mr. Berger discussed in math

Mathematics

1 answer:

Otrada [13]1 year ago

7 0

Answer: Your add 1 zero to the digit every time.

Step-by-step explanation:

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Which expression is equivalent to 5(2+7)? 0 205+7) O2+7(5) 05(2)+7 05(2)+5(7)

Alex Ar [27]

Answer:

5(2)+5(7)

Step-by-step explanation:

4 0

2 years ago

39. Solve this system: 3x+y=-7 . 4x-y=14A. (–1, 10)B. (1, –10)C. (–1, –10)D. no solution

valkas [14]

Given,

The linear pair of the equation is,

$\begin{gathered} 3x+y=-7 \\ 4x-y=14 \end{gathered}$

Required

The solution of the linear equation.

Taking the equation first as,

$\begin{gathered} 3x+y=-7 \\ y=-7-3x \end{gathered}$

Substituting the value of y in second equation then,

$\begin{gathered} 4x-y=14 \\ 4x+7+3x=14 \\ 7x+7=14 \\ 7x=7 \\ x=1 \end{gathered}$

Substituting the value of x in first equation then,

$\begin{gathered} 3x+y=-7 \\ 3(1)+y=-7 \\ y=-7-3 \\ y=-10 \end{gathered}$

Hence, the solution of the system is (1, -10).

8 0

1 year ago

Perform the indicated row operations

SVETLANKA909090 [29]

Answer:

$\begin{bmatrix}2 & -1 & -4 & 7\\ 0 & -30 & 20 & -50\\ 0 & 30 & 24 & 6\end{bmatrix}$

Step-by-step explanation:

Given matrix is,

$\begin{bmatrix}2 & -1 & -4 & 7\\ 0 & 3 & -2 & 5\\ 0 & 10 & 8 & 2\end{bmatrix}$

Operations performed,

-10R₂ → R₂

$\begin{bmatrix}2 & -1 & -4 & 7\\ 0 & -30 & 20 & -50\\ 0 & 10 & 8 & 2\end{bmatrix}$

3R₃ → R₃

$\begin{bmatrix}2 & -1 & -4 & 7\\ 0 & -30 & 20 & -50\\ 0 & 30 & 24 & 6\end{bmatrix}$

4 0

2 years ago

Flora drew the following graph to answer the question. What was her mistake when she drew her graph?

slamgirl [31]

Answer:

She drew the graph too steep, if she is going down at a constant rate of 300 ft per hour, at 1 hour she would be at 2,700 ft. it would take her about 10 hours to get down the mountain.

7 0

2 years ago

Find the sum -2+(-3) =

katen-ka-za [31]

Step-by-step explanation:

In simple terms it is, -2-3= -5

3 0

3 years ago