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Artyom0805 [142]
3 years ago
14

Melissa threw a coin from a bridge 160 feet high with an initial speed of 30 feet per second. Which of the following expressions

can be used to determine when the coin will hit the ground?
Mathematics
1 answer:
Flauer [41]3 years ago
3 0
160+30x Because you initially start with 160 and 30 feet per second. the 30 feet is the one that's progressing so that's the x.
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What is the explicit rule for the geometric sequence? 4.05, 1.35, 0.45, 0.15, ...
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Answer: First option is correct.

Step-by-step explanation:

Since we have given that

4.05, 1.35, 0.45, 0.15, ...

Since it is a geometric sequence.

So, here, a = 4.05

r = \dfrac{a_2}{a_1}=\dfrac{1.35}{4.05}=0.33

So, we know the formula for nth term in geometric sequence.

a_n=ar^{n-1}\\\\a_n=4.05(0.3)^{n-1}

Hence, First option is correct.

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Schach [20]

Answer:

y = 2x - 6

Step-by-step explanation:

Slope-intercept form is  y = mx + b, where m is the slope and b is the y-intercept.

The y-intercept is already given and is -6.

By c intercept, I am assuming you meant x-intercept.  With an x-intercept of 3, the point is (3,0).  With a y-intercept of -6, the point is (0,-6).

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m=\frac{y_{2}-y_{1}  }{x_{2}- x_{1} }

Plug the points into their respective positions and solve.

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Step-by-step explanation:

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Answer:

\Large \boxed{y = x^2  + 3 x - 5 \ \ \mathrm{and} \ \  x + y = -10}

Step-by-step explanation:

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When the two equations are graphed and if they do not intersect, then there are no real solutions for the system of equations.

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