1) (15x=-32-14y)-1<span>
2) 9x=-64+14y
</span>
1) -15x=32+14y
-
2) 9x=-64+14y
3) -24x=96
3) x=-4
Substitute x into 1) equation
1)<span> 15*-4=-32-14y
</span>1) -60+32=-14y
1) -28=-14y
1) y=2
Answer:
x=-4
y=2
Do you still need help with this?
Step-by-step explanation:
A) 45
B) 6
C) 6.7082039326
5x + 3 = 3x + 11
• first put all the x-values on one side and the rest on the other
Remember: when the number moves to the other side of the equal sign the sign (+ OR - switches. For ex: the 3 on the left becomes negative when moved to the right side of the equal sign)
5x - 3x = 11 - 3
• subtract left and right sides separately
2x = 8
• divide both sides by 2 to solve for x
2x/2 = 8/2
x = 4 (final answer)
Answer: t = 6 s
Step-by-step explanation:
When Rose hit the water, the height of the jump is 0, so: h(t) = 0.
Resolving it, we have:
-16t² + 16t + 480 = 0
To simplify the second degree equation, divided it by 16:
-t² + t + 30 = 0
Now, solve the equation using Bhaskara:
Δ = 1² - 4. (-1) . 30
Δ = 1 + 120
Δ = 121
t = 
t₁ = 
= - 5
t₂ = 
= 6
Since time can be negative, it took t = 6s for Rose to hit the water.
