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Katarina [22]
2 years ago
10

7. The amount of time it takes an athlete to complete a Ninja warrior course is normally distributed with mean 8.25 minutes and

standard deviation 0.4 minutes.
What percent of athletes complete the course in less than 7.5 minutes?
A00304
B. 05134
01342
0.3892
Mathematics
1 answer:
otez555 [7]2 years ago
4 0
The answer is c I think
You might be interested in
How many more unit tiles must be added to the function f(x)=x2−6x+1 in order to complete the square?
Valentin [98]
<h2>8 unit tiles should be added</h2>

Step-by-step explanation:

       Function given is f(x)=x^{2}-6x+1. We wish to add more unit tiles to the function so that it becomes a complete square.

       Since the given function is of order 2, the side of the square will be order 1. Let us assume a general order 1 expression ax+b to be the side of the square.

       As the function forms the square after adding some p unit tiles, f(x)+p=(\text{Side of square})^{2}

x^{2}-6x+1+p=(ax+b)^{2}=a^{2}x^{2} +2abx+b^{2}

From comparision, a^{2}=1; 2ab=-6; b^{2}=1+p\\a=1; b=-3\\(-3)^{2}=p+1\\p=8

∴ 8 more unit tiles are required to complete the square.

10 0
2 years ago
Read 2 more answers
What is the slope of a line through (-3,3) and (-1,1)<br><br> A. 1/2<br> B. 2<br> C. -2<br> D. - 1/2
stealth61 [152]

Answer:

D is the answer

Step-by-step explanation:

8 0
2 years ago
Find the circumference of the circle d=6 ft​
WITCHER [35]

Answer:

C = 6 pi ft

or

C = 18.84 ft

Step-by-step explanation:

The circumference of the circle:

C = pi * d

C = pi * 6

C = 6 pi

or

C = 6 * 3.14

C = 18.84 ft

6 0
2 years ago
In a school class there are 37 students.
Alla [95]

Answer:

total =37

girls =16

boys =21

wearing glasses =5

fraction of boys wearing glasses =5/21

3 0
3 years ago
How+long+will+it+take+for+$2900+to+grow+to+$25,600+at+an+interest+rate+of+10.4%+if+the+interest+is+compounded+quarterly?+round+t
vovikov84 [41]

The number of years to the nearest hundredth is t = 21 years and 3 months.

<h3>What is compound interest?</h3>

It is defined as the interest on the principal value or deposit and the interest which is gained on the principal value in the previous year.

We can calculate the compound interest using the below formula:

\rm A = P(1+\dfrac{r}{n})^{nt}

Where A = Final amount

          P = Principal amount

          r  = annual rate of interest

          n = how many times interest is compounded per year

          t = How long the money is deposited or borrowed (in years)

It is given that:

A = $25,600

P = $29,00

r = 10.4 = 0.104

n = 4

\rm 25600 = 2900(1+\dfrac{0.104}{4})^{4t}

After solving:

t = 21.212 years

Or

t = 21 years and 3 months

Thus, the number of years to the nearest hundredth is t = 21 years and 3 months.

Learn more about the compound interest here:

brainly.com/question/26457073

#SPJ4

4 0
1 year ago
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