Answer:
Ox=4 is the answer for the question
<em>x = - 6</em>
<em>y = - 2</em>
- Step-by-step explanation:
<em>-3x + 5y = 8 | ×(-2)</em>
<em>-2x + 7 y = -2 | ×3</em>
<em />
<em>6x - 10y = - 16</em>
<em>- 6x + 21y = - 6</em>
<em>add</em>
<em>6x - 6x - 10y + 21y = - 16 - 6</em>
<em>11y = - 22</em>
<em>y = - 22 : 11</em>
<em>y = - 2</em>
<em>replace y</em>
<em>- 2x + 7(-2) = - 2</em>
<em>- 2x - 14 = - 2</em>
<em>- 14 + 2 = 2x</em>
<em>2x = - 12</em>
<em>x = - 12 : 2</em>
<em>x = - 6</em>
Answer:
[6, 18]
Step-by-step explanation:
the first matrix has the dimensions 1 x 2 (1 row, 2 columns). The send has the dimensions 2 x 2. Because of this it is possible to do matrix multiplication and the result will be a 1 x 2 matrix.
Multiply the column -2, 7 by the row 4, 2:
We get (-2)(4) + (7)(2), which simplfies to 6. This is the first element of the 1 x 2 product.
Multiply the column 5, -1 by the row 4, 2: We get (5)(4) + (-1)(2), or 18.
The fourth answer choice is the correct one: [6, 18]
3,600 gallons per hour because there is 60 minutes in an hour and you started with 10 minutes so you multiply 60 by 60.
Answer:
10 days
Step-by-step explanation:
(10×5×2) = (2×5×x)
x = 10
