Answer:
x = -7
, y = 0
Step-by-step explanation:
Solve the following system:
{4 x + 5 y = -28 | (equation 1)
-4 x - 7 y = 28 | (equation 2)
Add equation 1 to equation 2:
{4 x + 5 y = -28 | (equation 1)
0 x - 2 y = 0 | (equation 2)
Divide equation 2 by 2:
{4 x + 5 y = -28 | (equation 1)
0 x - y = 0 | (equation 2)
Multiply equation 2 by -1:
{4 x + 5 y = -28 | (equation 1)
0 x+y = 0 | (equation 2)
Subtract 5 × (equation 2) from equation 1:
{4 x+0 y = -28 | (equation 1)
0 x+y = 0 | (equation 2)
Divide equation 1 by 4:
{x+0 y = -7 | (equation 1)
0 x+y = 0 | (equation 2)
Collect results:
Answer: {x = -7
, y = 0
Answer:
A
Step-by-step explanation:
3 goes into 9
4 goes into 12
And 5 goes into 20
Each empanada is $2 and proportional
Step-by-step explanation: <em>(</em><em><u>Follow the PEMDAS order of operations)</u></em><em> </em>
<u>Step 1: Multiply and Divide Both Sides </u>
1/2 = 1/2
= 1/2 x 1/5
1/2 x 1 = 1/2
= 1/2/5
<u>Step 2: Solve</u>
1/2/5 = 1/10
ANSWER: = 1/10
Explanation in words:
- The first step is to multiply and divide both of the sides following the PEMDAS operations which follow as
1: Parentheses
2: Exponents
3: Multiplication
4: DIvision
5: Addition
6: Subtraction
- The second step is to solve the equation at the end. So 1/2/5 is equal to 1/10. So the answer is 1/10.
Easy Steps: See Attachment
Answer:
1/10
Hope this helps.
