X + y = 40.....multiply by -4
4x + 6y = 180
-------------------
-4x - 4y = -160 (result of multiplying by -4)
4x + 6y = 180
------------------add
2y = 20
y = 20/2
y = 10 <===

x = 30

6 0

3 years ago

The object will hit the ground after 5 seconds. You can rewrite the quadratic function as a quadratic equation set equal to zero

mario62 [17]

Answer:

289

Step-by-step explanation:

8 0

2 years ago

Logan ran 13 miles in 3 1/4 hours. What was his average rate?

erma4kov [3.2K]

Answer:

ccccc

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

What number must be added to 36 to obtain −12

dezoksy [38]

The correct answer is -48

36 + x = -12
X = -12 - 36
x = -48

36 + (-48) = -12
36 - 48 = -12

3 0

2 years ago