A) C + A = 630
B) 2C + 5A = 2,910 Multiplying A by -2
A) -2C -2A = -1,260 Then adding it to B
B) 2C + 5A = 2,910
3A = 1,650
A = 550
A) C + 550 = 630
Children's tickets = 80
Answer:
x=3
x=−3
Step-by-step explanation:
2x^2 - 5 = 13
Subtract 13 from both sides.
2x^2 - 5 - 13 = 0
Subtract 13 from −5 to get −18.
2x^2 - 18 = 0
Divide both sides by 2.
x^2 - 9 = 0
Consider x^2−9. Rewrite x^2−9 as x^2−3^2. The difference of squares can be factored using the rule: a^2−b^2=(a−b)(a+b).
(x−3)(x+3)=0
To find equation solutions, solve x−3=0 and x+3=0.
x=3
x=−3
Answer:
x=1, y= -2
Step-by-step explanation:
Please see the attached pictures for full solution.
Answer:
60ft/s
Step-by-step explanation:
To find the rate
rate = f(3) - f(0)
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3-0
rate = 200-380
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3-0
rate = -180/3 = -60 ft/s
The negative tells us it is falling
The fall falls 60ft/s
A, the answer is A, something to do with opposite angles being the same, so A because 127 + 127 = 254
