Answer:
40
Step-by-step explanation:
3x + 7y
Replace the letters with said numbers,
3(4) + 7(4)
Multiply,
12 + 28
And add!
40
3=1 the statement is false
Answer:
the answer is (-4, 5)
Step-by-step explanation:
Let's use elimination by addition / subtraction:
-6x - 2y = 14
6x + 7y = 11
-------------------
5y = 25, so y = 5.
Substituting 5 for y in the 2nd equation, we get:
6x + 7(5) = 11, or:
6x + 35 = 11, or
6x = -24, or x = -4.
Thus, the answer is (-4, 5). Please double check to ensure you have copied down both system of equations and answer correctly.
Check: Is (-4, 5) a solution to this system?
Subst. -4 for x and 5 for y in the first equation:
-3(-4) - (5) = 7
12 - 5 = 7 YES
Answer:
25
Step-by-step explanation:
Answer:
Perimeter: 14.2
Area: 9.2
Step-by-step explanation:
Simple times for area
simple plus for perimeter
