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3 years ago

A bicyclist rides 25 miles every 2 hours during a race.

Mathematics

1 answer:

kupik [55]3 years ago

8 0

He rides 100 miles in 8 hours

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Pleaseee helpppp <3

Serjik [45]

$h=-16t^2+36t+4\implies \stackrel{h}{0}=4(-4t^2+9t+1)\implies 0=-4t^2+9t+1 \\\\[-0.35em] ~\dotfill\\\\ ~~~~~~~~~~~~\textit{quadratic formula} \\\\ 0=\stackrel{\stackrel{a}{\downarrow }}{-4}t^2\stackrel{\stackrel{b}{\downarrow }}{+9}t\stackrel{\stackrel{c}{\downarrow }}{+1} \qquad \qquad t= \cfrac{ - b \pm \sqrt { b^2 -4 a c}}{2 a}$

$t= \cfrac{ - (9) \pm \sqrt { (9)^2 -4(-4)(1)}}{2(-4)} \implies t = \cfrac{ -9 \pm \sqrt { 81 +16}}{ -8 } \\\\\\ t= \cfrac{ -9 \pm \sqrt { 97 }}{ -8 }\implies t=\cfrac{9\mp\sqrt{97}}{8}$

5 0

1 year ago

The movie rental store CineStar offers customers two choices. Customers

nikdorinn [45]

Answer:

The yearly fee + $2 per movie

Step-by-step explanation:

Because lets say you rent 50 movies per year. Well with the yearly fee its $145. But with no yearly fee and just $3.50 per movie it’s $175.

3 0

3 years ago

If two sides of one triangle are proportional to two sides of another and included angles are equal, then the triangles are simi

tiny-mole [99]

Yes the triangles are similar. It’s true

8 0

3 years ago

Find the value of n if (81)^5/n = 243

zavuch27 [327]

Answer:

N = 14348907

Step-by-step explanation:

81^5 = 3486784401

3486784401/243 = 14348907

Double Check

3486784401 / 14348907=243

So N = 14348907.

3 0

3 years ago

Please help me!! I really need it!! I Could fail the 7th grade

babymother [125]

Answer:

Step-by-step explanation:

Price of one ticket = $4

Price of t tickets = 4t

1) 4t + 72 > 400

t > (400-72)/4

2) 4t + 72 > 400

4t + 72 - 72 > 400 - 72 {subtract 72 from both sides}

4t > 328

4t/4 > 328/4 {divide both sides by 4}

t > 82

7 0

3 years ago