Answer:
(12, 487)
Step-by-step explanation:
y = 3.7x + 442 ----› Eqn. 1
y = 14.4x + 312 ----› Eqn. 2
Substitute y = (3.7x + 442) into eqn. 2.
y = 14.4x + 312 ----› Eqn. 2
3.7x + 442 = 14.4x + 312
Collect like terms
3.7x - 14.4x = -442 + 312
-10.7x = -130
Divide both sides by -10.7
x = 12.1495327
Substitute x = 12.1495327 into eqn. 1.
y = 3.7x + 442 ----› Eqn. 1
y = 3.7(12.1495327) + 442
y = 486.953271
The solution to the system is rounded to the nearest integer:
(12, 487)
To begin with, the amplitude of the sine curve, according to the graph, is 70 at the maximum. So far far what you know is
y = 70 sin(something)
Next a full sine wave occurs after 15 seconds approximately. That means after 15 second, you should get 2*pi. Call the values along the x axis = t
y = 70*sin(t/15 * 2*pi) That should be your full answer. Check it out. Where is the maximum? It is just under 4 seconds. It's an estimation. It's not easy to read, but call it 3.9
y = 70*sin(3.9/15 * 2pi) Multiply 2 * 3.9
y = 70* sin(7.8/15 * pi) Multiply 7.8 * pi: Use 3.14 for pi
y = 70 * sin(24.49/ 15)
y = 70* sin(1.633) Make sure you are in radians for the next step.
y = 70*0.99806 = 69.86 inches. which is pretty close to 70.
If this is homework, be sure and point out that the graph is not really accurate and that the end number on the x axis should be 24 not 22.
y = 70 sin (t/15 * 2pi) <<<< answer.
Answer:
lolololololololoolololo
Step-by-step explanation:
Answer: B(8, 1)
Step-by-step explanation:
