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Sliva [168]
3 years ago
10

suppose that a player can run at a speed of 15 miles per hour. how many second will it take for the player to run from one corne

r to the opposite corner? round your answer to the nearest second. there are 5280 feet in a mile, 60 second in a minute and 60 minutes in a hour​
Mathematics
1 answer:
kvv77 [185]3 years ago
5 0

answer

15 seconds

set up distance equation

to find the shortest distance between corners, we can use the Pythagorean theorem a^2 + b^2 = c^2

a is the width or 160 feet

b is the length or 300 feet

find distance

plug in values to find c, the distance

a^2 + b^2 = c^2

160^2 + 300^2 = c^2

115600  = c^2

c = \sqrt{115600}

c = 340  feet

set up time equation

to find the time it takes to run from corner to corner, we can use the equation

time = \frac{distance}{speed}

find speed in feet/second

convert the speed of 15 miles/hour into feet/second

\frac{15miles}{hour} *\frac{5280 feet}{1 miles} * \frac{1 hour}{60 minutes}*\frac{1 minute}{60 seconds}

= 22 feet/second

find time

since we now know distance and speed with the appropriate units, we can find time

plug values into time = \frac{distance}{speed}

distance = c = 340 feet

speed = 22 feet/second

time = \frac{340}{22}

time = 15.4545 ≈ 15 seconds

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Igoryamba

Answer:

1. x= -56.25

Expand

19.5-6.5x+36=201-4.5x-33

Simplify

-6.5x+55.5=201-4.5x-33

Simplify again

6.5x+55.5=-4.5x+168

Add 6.5 to both sides

55.5=-4.5x+168+6.5x

Simplify

55.5=2x+168

Subtract

55.5-168=2x

Simplify

112.5=2x

Divide both sides by 2

−112.5÷2 = x

Simplfy

x = -56.25

2. x > -7 ÷ 4

Or

Decimal Form: -1.75

Remove parentheses

12x>4x+5−19

Simplify

12x>4x-14

Subtract

12x-4x>-14

Simplify

8x>-14

Divide both sides by 8

x > -14 ÷ 8

Simplify

x > -7 ÷ 4

Or

Decimal Form: -1.75

3. Answer: Step 2 has an error

Step-by-step explanation:

Given equation,

2(10 - 13x) = -34x + 60

By distributive property,

20 - 26x = -34x + 60

Now, we need to isolate x on the left side of the equation,

For this we need to eliminate constant term from the left side,

20 will be eliminated by subtracting 20 from both sides ( subtraction property of equality )

I.e. Step 2 has an error,

We need to use subtraction property of equality instead of using addition property of Equality,

Note : The correct steps would be,

Step 2 : 20 - 26x = -34x + 60 ( Subtraction property of equality )

Step 3 : 8x = 40  ( addition property of Equality )

Step 4 :  x = 5  (  Division Property of Equality )

Hope this helps!!! Good luck!!! ;)

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Answer:

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Step-by-step explanation:

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Hello : 
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