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valentina_108 [34]
3 years ago
13

Jamaican sprinter Usain Bolt 100 m sprint gold medal in the 2012 Summer Olympics Iran the hundred meter race and 9.63 seconds th

ere are about 3.28 feet in a meter and 5280 feet in a mile what was used on Ballz average speed for the hundred meter race in miles per hour
Mathematics
1 answer:
Serggg [28]3 years ago
4 0

Answer: 23.2 miles per hour

Step-by-step explanation:

He ran 100 meters in 9.63 seconds.

First convert the number of meters he ran to miles:

= 100 * 3.28

= 328 feet

= 328/5,280

= 0.062121212 miles

Convert the seconds to hours:

= 9.63 / 60

= ‭0.1605‬ minutes

= ‭0.1605‬/60

= ‭0.002675‬ hours

Speed in miles per hour is:

=  0.062121212 / ‭0.002675

= 23.22

= 23.2 miles per hour

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The volume is 130*100*24=312 000 ft^3

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3 years ago
1.) You need to buy grass seed for a new lawn. The lawn will cover a rectangular plot that is 60 feet by 90 feet. Each ounce of
galina1969 [7]
Part A:
First, we will need to compute the area of the lawn.
We are given that the lawn is a rectangular plot with dimensions 60 ft and 90 ft.
Area of rectangle = length * width
Area of lawn = 60 * 90 = 5400 ft^2
Now, we will compute the number of ounces.
We are given that:
<span>Each ounce of grass seed will cover 120 square feet. Therefore, to know the number of ounces needed to cover 5400 square feet, all we have to do is cross multiplication as follows:
1 ounce ---------> 120 square feet
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Part B:
We know that one ounce is equivalent to 0.0625 pounds.
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7 0
3 years ago
Read 2 more answers
2. Panthers' points during the basketball season
Vinvika [58]

Answer:

\bar x = 83.1875

Step-by-step explanation:

Required

Determine the arithmetic mean

This is calculated as:

\bar x = \frac{\sum x}{n}

So, we have:

\bar x = \frac{82 +95 +85 +80 +78 +82 +86 +96 +73 +68 +91+ 80+ 90+ 86 +72 +87}{16}

\bar x = \frac{1331}{16}

\bar x = 83.1875

7 0
3 years ago
What is26 and 22 rounded to
Virty [35]
26 rounded to 30 22 rounded to 20
8 0
3 years ago
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3log5(x-10)-1/2log54=5log52<br><br> Solve each equation. #10
Inessa [10]

Answer:

\large\boxed{x=14}

Step-by-step explanation:

3\log_5(x-10)-\dfrac{1}{2}\log_54=5\log_52\\\\\text{Domain:}\ x-10>0\to x>10\\\\\text{use}\\\\\log_ab^n=n\log_ab\\\\\log_ab-\log_ac=\log_a\left(\dfrac{b}{c}\right)\\========================\\\\\log_5(x-10)^3-\log_54^\frac{1}{2}=\log_52^5\qquad\text{use}\ a^\frac{1}{2}=\sqrt{a}\\\\\log_5(x-10)^3-\log_5\sqrt4=\log_532\\\\\log_5(x-10)^3-\log_52=\log_532\\\\\log_5\dfrac{(x-10)^3}{2}=\log_532\iff\dfrac{(x-10)^3}{2}=32\qquad\text{multiply both sides by 2}\\\\(x-10)^3=64\to x-10=\sqrt[3]{64}\\\\x-10=4\qquad\text{add 10 to both sides}\\\\x=14\in D

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4 years ago
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