Answer:
(-6,8) is your answer.
Step-by-step explanation:
1. 2x + 3y = 12
2. 2x +3 * 8 = 12
3. 2x + 24 = 12
4. 2x = -12
5. x = -6
So, our final answer is (-6,8)
It’s b got it right on edge
Answer: x = 41.22 and 38.78
Step-by-step explanation:
Given the equation
4x² - 40x + 94 = 0
Using the general formula
x = -b+/-√b²-4ac/2a
Where a = 4, b= -40 c= 94
x = -(-40)+/-√(-40)²-4(4)(94)/2(4)
x = 40+/-√1600-1504/8
x = 40 +/-√96/8
x = 40 +/-9.8/8
x = 40+/-1.22
x= 40+2.22 = 41.22
and x = 40 -1.22
x = 38.78
Step-by-step explanation:
9. 131+106+67+x=360
237+67+x=360
304+x=360
x=56
10. 90+90+146+w=360
180+146+w=360
326+w=360
w=34
Answer:
The total cost of boring the 750 meters is $37,700.
Step-by-step explanation:
We know that the cost of the first meter is $250.
You want to keep on adding $50 each time you add a meter for example the cost of the second meter would be $300 because you add $250+50. Another way is that you can multiply so for the third meter it would be $350 as you $250+50(2).
In that way you can see a pattern forming and we want to subtract 1 variable when multiplying as you are already originally adding $50.
So now we want to form an equation to solve for the cost of 750 meters. The equation I would make is
250+50(750-1)
then you can solve to get 37700 that is shown below
250+50(750-1)
250+50(749)
250+37450
37700
That will be our answer!
The total cost of boring the 750 meters is $37,700.
